Search criteria
62 vulnerabilities found for CPython by Python Software Foundation
CVE-2025-12084 (GCVE-0-2025-12084)
Vulnerability from nvd – Published: 2025-12-03 18:55 – Updated: 2025-12-03 19:14
VLAI?
Summary
When building nested elements using xml.dom.minidom methods such as appendChild() that have a dependency on _clear_id_cache() the algorithm is quadratic. Availability can be impacted when building excessively nested documents.
Severity ?
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.15.0
(python)
|
Credits
Jacob Walls
Shai Berger
Natalia Bidart
Seth Larson
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CVE-2025-13837 (GCVE-0-2025-13837)
Vulnerability from nvd – Published: 2025-12-01 18:13 – Updated: 2025-12-02 17:42
VLAI?
Summary
When loading a plist file, the plistlib module reads data in size specified by the file itself, meaning a malicious file can cause OOM and DoS issues
Severity ?
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.10
(python)
Affected: 3.14.0 , < 3.14.1 (python) Affected: 3.15.0a1 , < 3.15.0 (python) |
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CVE-2025-13836 (GCVE-0-2025-13836)
Vulnerability from nvd – Published: 2025-12-01 18:02 – Updated: 2025-12-02 18:29
VLAI?
Summary
When reading an HTTP response from a server, if no read amount is specified, the default behavior will be to use Content-Length. This allows a malicious server to cause the client to read large amounts of data into memory, potentially causing OOM or other DoS.
Severity ?
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.14.1
(python)
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CVE-2025-6075 (GCVE-0-2025-6075)
Vulnerability from nvd – Published: 2025-10-31 16:41 – Updated: 2025-12-02 17:43
VLAI?
Summary
If the value passed to os.path.expandvars() is user-controlled a
performance degradation is possible when expanding environment
variables.
Severity ?
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.10
(python)
Affected: 3.14.0 , < 3.14.1 (python) Affected: 3.15.0a1 , < 3.15.0a2 (python) |
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CVE-2025-8291 (GCVE-0-2025-8291)
Vulnerability from nvd – Published: 2025-10-07 18:10 – Updated: 2025-12-02 17:43
VLAI?
Summary
The 'zipfile' module would not check the validity of the ZIP64 End of
Central Directory (EOCD) Locator record offset value would not be used to
locate the ZIP64 EOCD record, instead the ZIP64 EOCD record would be
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compared to other ZIP implementations.
Remediation maintains this behavior, but checks that the offset specified
in the ZIP64 EOCD Locator record matches the expected value.
Severity ?
4.3 (Medium)
CWE
- CWE-1285 - Improper Validation of Specified Index, Position, or Offset in Input
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.24
(python)
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Credits
Caleb Brown (Google)
Serhiy Storchaka
Seth Larson
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CVE-2025-8194 (GCVE-0-2025-8194)
Vulnerability from nvd – Published: 2025-07-28 18:42 – Updated: 2025-11-04 22:06
VLAI?
Summary
There is a defect in the CPython “tarfile” module affecting the “TarFile” extraction and entry enumeration APIs. The tar implementation would process tar archives with negative offsets without error, resulting in an infinite loop and deadlock during the parsing of maliciously crafted tar archives.
This vulnerability can be mitigated by including the following patch after importing the “tarfile” module: https://gist.github.com/sethmlarson/1716ac5b82b73dbcbf23ad2eff8b33e1
Severity ?
7.5 (High)
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.24
(python)
Affected: 3.10.0 , < 3.10.19 (python) Affected: 3.11.0 , < 3.11.14 (python) Affected: 3.12.0 , < 3.12.12 (python) Affected: 3.13.0 , < 3.13.6 (python) Affected: 3.14.0a1 , < 3.14.0rc2 (python) |
Credits
Alexander Urieles
Seth Larson
Ethan Furman
Steve Dower
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CVE-2025-6069 (GCVE-0-2025-6069)
Vulnerability from nvd – Published: 2025-06-17 13:39 – Updated: 2025-10-09 18:37
VLAI?
Summary
The html.parser.HTMLParser class had worse-case quadratic complexity when processing certain crafted malformed inputs potentially leading to amplified denial-of-service.
Severity ?
4.3 (Medium)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.24
(python)
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Credits
Serhiy Storchaka
Jake Howard
sw0rd1ight
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CVE-2024-12718 (GCVE-0-2024-12718)
Vulnerability from nvd – Published: 2025-06-03 12:59 – Updated: 2025-07-24 15:57
VLAI?
Summary
Allows modifying some file metadata (e.g. last modified) with filter="data" or file permissions (chmod) with filter="tar" of files outside the extraction directory.
You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives using TarFile.extractall() or TarFile.extract() using the filter= parameter with a value of "data" or "tar". See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information. Only Python versions 3.12 or later are affected by these vulnerabilities, earlier versions don't include the extraction filter feature.
Note that for Python 3.14 or later the default value of filter= changed from "no filtering" to `"data", so if you are relying on this new default behavior then your usage is also affected.
Note that none of these vulnerabilities significantly affect the installation of source distributions which are tar archives as source distributions already allow arbitrary code execution during the build process. However when evaluating source distributions it's important to avoid installing source distributions with suspicious links.
Severity ?
5.3 (Medium)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.23
(python)
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Credits
Jakub Wilk
Seth Larson
Petr Viktorin
Serhiy Storchaka
Hugo van Kemenade
Łukasz Langa
Thomas Wouters
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CVE-2025-4435 (GCVE-0-2025-4435)
Vulnerability from nvd – Published: 2025-06-03 12:59 – Updated: 2025-07-07 17:36
VLAI?
Summary
When using a TarFile.errorlevel = 0 and extracting with a filter the documented behavior is that any filtered members would be skipped and not extracted. However the actual behavior of TarFile.errorlevel = 0 in affected versions is that the member would still be extracted and not skipped.
Severity ?
7.5 (High)
CWE
- CWE-682 - Incorrect Calculation
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.23
(python)
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Credits
Chuck Woodraska
Petr Viktorin
Serhiy Storchaka
Hugo van Kemenade
Łukasz Langa
Thomas Wouters
Seth Larson
Matt Prodani
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CVE-2025-4138 (GCVE-0-2025-4138)
Vulnerability from nvd – Published: 2025-06-03 12:59 – Updated: 2025-07-07 17:36
VLAI?
Summary
Allows the extraction filter to be ignored, allowing symlink targets to point outside the destination directory, and the modification of some file metadata.
You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives using TarFile.extractall() or TarFile.extract() using the filter= parameter with a value of "data" or "tar". See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information.
Note that for Python 3.14 or later the default value of filter= changed from "no filtering" to `"data", so if you are relying on this new default behavior then your usage is also affected.
Note that none of these vulnerabilities significantly affect the installation of source distributions which are tar archives as source distributions already allow arbitrary code execution during the build process. However when evaluating source distributions it's important to avoid installing source distributions with suspicious links.
Severity ?
7.5 (High)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.23
(python)
Affected: 3.10.0 , < 3.10.18 (python) Affected: 3.11.0 , < 3.11.13 (python) Affected: 3.12.0 , < 3.12.11 (python) Affected: 3.13.0 , < 3.13.4 (python) Affected: 3.14.0a1 , < 3.14.0b3 (python) |
Credits
Caleb Brown (Google)
Petr Viktorin
Serhiy Storchaka
Hugo van Kemenade
Łukasz Langa
Thomas Wouters
Seth Larson
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CVE-2025-4330 (GCVE-0-2025-4330)
Vulnerability from nvd – Published: 2025-06-03 12:58 – Updated: 2025-07-07 17:36
VLAI?
Summary
Allows the extraction filter to be ignored, allowing symlink targets to point outside the destination directory, and the modification of some file metadata.
You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives using TarFile.extractall() or TarFile.extract() using the filter= parameter with a value of "data" or "tar". See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information.
Note that for Python 3.14 or later the default value of filter= changed from "no filtering" to `"data", so if you are relying on this new default behavior then your usage is also affected.
Note that none of these vulnerabilities significantly affect the installation of source distributions which are tar archives as source distributions already allow arbitrary code execution during the build process. However when evaluating source distributions it's important to avoid installing source distributions with suspicious links.
Severity ?
7.5 (High)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.23
(python)
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Credits
Caleb Brown (Google)
Petr Viktorin
Serhiy Storchaka
Hugo van Kemenade
Łukasz Langa
Thomas Wouters
Seth Larson
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CVE-2025-4517 (GCVE-0-2025-4517)
Vulnerability from nvd – Published: 2025-06-03 12:58 – Updated: 2025-10-24 03:55
VLAI?
Summary
Allows arbitrary filesystem writes outside the extraction directory during extraction with filter="data".
You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives using TarFile.extractall() or TarFile.extract() using the filter= parameter with a value of "data" or "tar". See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information.
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Note that none of these vulnerabilities significantly affect the installation of source distributions which are tar archives as source distributions already allow arbitrary code execution during the build process. However when evaluating source distributions it's important to avoid installing source distributions with suspicious links.
Severity ?
9.4 (Critical)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.23
(python)
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Credits
Caleb Brown (Google)
Petr Viktorin
Serhiy Storchaka
Hugo van Kemenade
Łukasz Langa
Thomas Wouters
Seth Larson
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CVE-2025-4516 (GCVE-0-2025-4516)
Vulnerability from nvd – Published: 2025-05-15 13:29 – Updated: 2025-06-03 20:53
VLAI?
Summary
There is an issue in CPython when using `bytes.decode("unicode_escape", error="ignore|replace")`. If you are not using the "unicode_escape" encoding or an error handler your usage is not affected. To work-around this issue you may stop using the error= handler and instead wrap the bytes.decode() call in a try-except catching the DecodeError.
Severity ?
CWE
- CWE-416 - Use After Free
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.23
(python)
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CVE-2025-1795 (GCVE-0-2025-1795)
Vulnerability from nvd – Published: 2025-02-28 18:59 – Updated: 2025-12-01 19:01
VLAI?
Summary
During an address list folding when a separating comma ends up on a folded line and that line is to be unicode-encoded then the separator itself is also unicode-encoded. Expected behavior is that the separating comma remains a plan comma. This can result in the address header being misinterpreted by some mail servers.
Severity ?
CWE
- CWE-116 - Improper Encoding or Escaping of Output
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
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| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.23
(python)
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CVE-2024-3220 (GCVE-0-2024-3220)
Vulnerability from nvd – Published: 2025-02-14 16:18 – Updated: 2025-03-14 10:03
VLAI?
Summary
There is a defect in the CPython standard library module “mimetypes” where on Windows the default list of known file locations are writable meaning other users can create invalid files to cause MemoryError to be raised on Python runtime startup or have file extensions be interpreted as the incorrect file type.
This defect is caused by the default locations of Linux and macOS platforms (such as “/etc/mime.types”) also being used on Windows, where they are user-writable locations (“C:\etc\mime.types”).
To work-around this issue a user can call mimetypes.init() with an empty list (“[]”) on Windows platforms to avoid using the default list of known file locations.
Severity ?
CWE
- CWE-426 - Untrusted Search Path
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.14.0
(python)
|
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CVE-2025-12084 (GCVE-0-2025-12084)
Vulnerability from cvelistv5 – Published: 2025-12-03 18:55 – Updated: 2025-12-03 19:14
VLAI?
Summary
When building nested elements using xml.dom.minidom methods such as appendChild() that have a dependency on _clear_id_cache() the algorithm is quadratic. Availability can be impacted when building excessively nested documents.
Severity ?
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.15.0
(python)
|
Credits
Jacob Walls
Shai Berger
Natalia Bidart
Seth Larson
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CVE-2025-13837 (GCVE-0-2025-13837)
Vulnerability from cvelistv5 – Published: 2025-12-01 18:13 – Updated: 2025-12-02 17:42
VLAI?
Summary
When loading a plist file, the plistlib module reads data in size specified by the file itself, meaning a malicious file can cause OOM and DoS issues
Severity ?
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.10
(python)
Affected: 3.14.0 , < 3.14.1 (python) Affected: 3.15.0a1 , < 3.15.0 (python) |
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CVE-2025-13836 (GCVE-0-2025-13836)
Vulnerability from cvelistv5 – Published: 2025-12-01 18:02 – Updated: 2025-12-02 18:29
VLAI?
Summary
When reading an HTTP response from a server, if no read amount is specified, the default behavior will be to use Content-Length. This allows a malicious server to cause the client to read large amounts of data into memory, potentially causing OOM or other DoS.
Severity ?
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.14.1
(python)
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CVE-2025-6075 (GCVE-0-2025-6075)
Vulnerability from cvelistv5 – Published: 2025-10-31 16:41 – Updated: 2025-12-02 17:43
VLAI?
Summary
If the value passed to os.path.expandvars() is user-controlled a
performance degradation is possible when expanding environment
variables.
Severity ?
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.13.10
(python)
Affected: 3.14.0 , < 3.14.1 (python) Affected: 3.15.0a1 , < 3.15.0a2 (python) |
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CVE-2025-8291 (GCVE-0-2025-8291)
Vulnerability from cvelistv5 – Published: 2025-10-07 18:10 – Updated: 2025-12-02 17:43
VLAI?
Summary
The 'zipfile' module would not check the validity of the ZIP64 End of
Central Directory (EOCD) Locator record offset value would not be used to
locate the ZIP64 EOCD record, instead the ZIP64 EOCD record would be
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compared to other ZIP implementations.
Remediation maintains this behavior, but checks that the offset specified
in the ZIP64 EOCD Locator record matches the expected value.
Severity ?
4.3 (Medium)
CWE
- CWE-1285 - Improper Validation of Specified Index, Position, or Offset in Input
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.24
(python)
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Credits
Caleb Brown (Google)
Serhiy Storchaka
Seth Larson
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CVE-2025-8194 (GCVE-0-2025-8194)
Vulnerability from cvelistv5 – Published: 2025-07-28 18:42 – Updated: 2025-11-04 22:06
VLAI?
Summary
There is a defect in the CPython “tarfile” module affecting the “TarFile” extraction and entry enumeration APIs. The tar implementation would process tar archives with negative offsets without error, resulting in an infinite loop and deadlock during the parsing of maliciously crafted tar archives.
This vulnerability can be mitigated by including the following patch after importing the “tarfile” module: https://gist.github.com/sethmlarson/1716ac5b82b73dbcbf23ad2eff8b33e1
Severity ?
7.5 (High)
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.24
(python)
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Credits
Alexander Urieles
Seth Larson
Ethan Furman
Steve Dower
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CVE-2025-6069 (GCVE-0-2025-6069)
Vulnerability from cvelistv5 – Published: 2025-06-17 13:39 – Updated: 2025-10-09 18:37
VLAI?
Summary
The html.parser.HTMLParser class had worse-case quadratic complexity when processing certain crafted malformed inputs potentially leading to amplified denial-of-service.
Severity ?
4.3 (Medium)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.24
(python)
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Credits
Serhiy Storchaka
Jake Howard
sw0rd1ight
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CVE-2024-12718 (GCVE-0-2024-12718)
Vulnerability from cvelistv5 – Published: 2025-06-03 12:59 – Updated: 2025-07-24 15:57
VLAI?
Summary
Allows modifying some file metadata (e.g. last modified) with filter="data" or file permissions (chmod) with filter="tar" of files outside the extraction directory.
You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives using TarFile.extractall() or TarFile.extract() using the filter= parameter with a value of "data" or "tar". See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information. Only Python versions 3.12 or later are affected by these vulnerabilities, earlier versions don't include the extraction filter feature.
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Severity ?
5.3 (Medium)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||
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| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.23
(python)
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Credits
Jakub Wilk
Seth Larson
Petr Viktorin
Serhiy Storchaka
Hugo van Kemenade
Łukasz Langa
Thomas Wouters
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CVE-2025-4435 (GCVE-0-2025-4435)
Vulnerability from cvelistv5 – Published: 2025-06-03 12:59 – Updated: 2025-07-07 17:36
VLAI?
Summary
When using a TarFile.errorlevel = 0 and extracting with a filter the documented behavior is that any filtered members would be skipped and not extracted. However the actual behavior of TarFile.errorlevel = 0 in affected versions is that the member would still be extracted and not skipped.
Severity ?
7.5 (High)
CWE
- CWE-682 - Incorrect Calculation
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.23
(python)
Affected: 3.10.0 , < 3.10.18 (python) Affected: 3.11.0 , < 3.11.13 (python) Affected: 3.12.0 , < 3.12.11 (python) Affected: 3.13.0 , < 3.13.4 (python) Affected: 3.14.0a1 , < 3.14.0b3 (python) |
Credits
Chuck Woodraska
Petr Viktorin
Serhiy Storchaka
Hugo van Kemenade
Łukasz Langa
Thomas Wouters
Seth Larson
Matt Prodani
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CVE-2025-4138 (GCVE-0-2025-4138)
Vulnerability from cvelistv5 – Published: 2025-06-03 12:59 – Updated: 2025-07-07 17:36
VLAI?
Summary
Allows the extraction filter to be ignored, allowing symlink targets to point outside the destination directory, and the modification of some file metadata.
You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives using TarFile.extractall() or TarFile.extract() using the filter= parameter with a value of "data" or "tar". See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information.
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Note that none of these vulnerabilities significantly affect the installation of source distributions which are tar archives as source distributions already allow arbitrary code execution during the build process. However when evaluating source distributions it's important to avoid installing source distributions with suspicious links.
Severity ?
7.5 (High)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.23
(python)
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Credits
Caleb Brown (Google)
Petr Viktorin
Serhiy Storchaka
Hugo van Kemenade
Łukasz Langa
Thomas Wouters
Seth Larson
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CVE-2025-4330 (GCVE-0-2025-4330)
Vulnerability from cvelistv5 – Published: 2025-06-03 12:58 – Updated: 2025-07-07 17:36
VLAI?
Summary
Allows the extraction filter to be ignored, allowing symlink targets to point outside the destination directory, and the modification of some file metadata.
You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives using TarFile.extractall() or TarFile.extract() using the filter= parameter with a value of "data" or "tar". See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information.
Note that for Python 3.14 or later the default value of filter= changed from "no filtering" to `"data", so if you are relying on this new default behavior then your usage is also affected.
Note that none of these vulnerabilities significantly affect the installation of source distributions which are tar archives as source distributions already allow arbitrary code execution during the build process. However when evaluating source distributions it's important to avoid installing source distributions with suspicious links.
Severity ?
7.5 (High)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.23
(python)
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Credits
Caleb Brown (Google)
Petr Viktorin
Serhiy Storchaka
Hugo van Kemenade
Łukasz Langa
Thomas Wouters
Seth Larson
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CVE-2025-4517 (GCVE-0-2025-4517)
Vulnerability from cvelistv5 – Published: 2025-06-03 12:58 – Updated: 2025-10-24 03:55
VLAI?
Summary
Allows arbitrary filesystem writes outside the extraction directory during extraction with filter="data".
You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives using TarFile.extractall() or TarFile.extract() using the filter= parameter with a value of "data" or "tar". See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information.
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Note that none of these vulnerabilities significantly affect the installation of source distributions which are tar archives as source distributions already allow arbitrary code execution during the build process. However when evaluating source distributions it's important to avoid installing source distributions with suspicious links.
Severity ?
9.4 (Critical)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.23
(python)
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Credits
Caleb Brown (Google)
Petr Viktorin
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Hugo van Kemenade
Łukasz Langa
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Seth Larson
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CVE-2025-4516 (GCVE-0-2025-4516)
Vulnerability from cvelistv5 – Published: 2025-05-15 13:29 – Updated: 2025-06-03 20:53
VLAI?
Summary
There is an issue in CPython when using `bytes.decode("unicode_escape", error="ignore|replace")`. If you are not using the "unicode_escape" encoding or an error handler your usage is not affected. To work-around this issue you may stop using the error= handler and instead wrap the bytes.decode() call in a try-except catching the DecodeError.
Severity ?
CWE
- CWE-416 - Use After Free
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||
Impacted products
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|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.23
(python)
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CVE-2025-1795 (GCVE-0-2025-1795)
Vulnerability from cvelistv5 – Published: 2025-02-28 18:59 – Updated: 2025-12-01 19:01
VLAI?
Summary
During an address list folding when a separating comma ends up on a folded line and that line is to be unicode-encoded then the separator itself is also unicode-encoded. Expected behavior is that the separating comma remains a plan comma. This can result in the address header being misinterpreted by some mail servers.
Severity ?
CWE
- CWE-116 - Improper Encoding or Escaping of Output
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.9.23
(python)
Affected: 3.10.0 , < 3.10.17 (python) Affected: 3.11.0 , < 3.11.9 (python) Affected: 3.12.0 , < 3.12.3 (python) Affected: 3.13.0a1 , < 3.13.0a5 (python) |
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CVE-2024-3220 (GCVE-0-2024-3220)
Vulnerability from cvelistv5 – Published: 2025-02-14 16:18 – Updated: 2025-03-14 10:03
VLAI?
Summary
There is a defect in the CPython standard library module “mimetypes” where on Windows the default list of known file locations are writable meaning other users can create invalid files to cause MemoryError to be raised on Python runtime startup or have file extensions be interpreted as the incorrect file type.
This defect is caused by the default locations of Linux and macOS platforms (such as “/etc/mime.types”) also being used on Windows, where they are user-writable locations (“C:\etc\mime.types”).
To work-around this issue a user can call mimetypes.init() with an empty list (“[]”) on Windows platforms to avoid using the default list of known file locations.
Severity ?
CWE
- CWE-426 - Untrusted Search Path
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.14.0
(python)
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