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(CVE-2015-20107)
Vulnerability from cleanstart – Published: 2026-05-18 13:12 – Updated: 2026-09-18 11:59 – Source website
Withdrawn 2026-09-18
VLAI
Summary
Security fixes for CVE-2015-20107, CVE-2015-2104, CVE-2019-16056, CVE-2019-16935, CVE-2019-20907, CVE-2019-5010, CVE-2020-14422, CVE-2020-8492, CVE-2021-23336, CVE-2021-29921, CVE-2021-3177, CVE-2022-45061, CVE-2023-27043, CVE-2024-6232, CVE-2024-6923, CVE-2025-59375, CVE-2026-3219, CVE-2026-6357 applied in versions: 3.10.5-r0, 3.11.1-r0, 3.11.5-r0, 3.12.12-r0, 3.12.13-r0, 3.12.3-r2, 3.12.6-r0, 3.6.8-r1, 3.7.5-r0, 3.8.2-r0, 3.8.4-r0, 3.8.5-r0, 3.8.7-r2, 3.8.8-r0, 3.9.4-r0, 3.9.5-r0
Details
Multiple security vulnerabilities affect the python3 package. These issues are resolved in later releases. See references for individual vulnerability details.
References
{
"affected": [
{
"package": {
"ecosystem": "CleanStart",
"name": "python3"
},
"ranges": [
{
"events": [
{
"introduced": "0"
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{
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}
],
"credits": [],
"database_specific": {},
"details": "Multiple security vulnerabilities affect the python3 package. These issues are resolved in later releases. See references for individual vulnerability details.",
"id": "CLEANSTART-2026-SY44974",
"modified": "2026-09-18T11:59:01.768079Z",
"published": "2026-05-18T13:12:05.660347Z",
"references": [
{
"type": "ADVISORY",
"url": "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-SY44974.json"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2015-20107"
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{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2015-2104"
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{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2019-16056"
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{
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"url": "https://osv.dev/vulnerability/CVE-2019-16935"
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{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2019-20907"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2019-5010"
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{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2020-14422"
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{
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{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2021-23336"
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{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2021-29921"
},
{
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"url": "https://osv.dev/vulnerability/CVE-2021-3177"
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{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2022-45061"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2023-27043"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2024-6232"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2024-6923"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2025-59375"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-3219"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-6357"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-20107"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-2104"
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{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-16056"
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{
"type": "WEB",
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{
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{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-5010"
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{
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-14422"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8492"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-23336"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-29921"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3177"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-45061"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-27043"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-6232"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-6923"
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{
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-59375"
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{
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3219"
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"related": [],
"schema_version": "1.7.3",
"summary": "Security fixes for CVE-2015-20107, CVE-2015-2104, CVE-2019-16056, CVE-2019-16935, CVE-2019-20907, CVE-2019-5010, CVE-2020-14422, CVE-2020-8492, CVE-2021-23336, CVE-2021-29921, CVE-2021-3177, CVE-2022-45061, CVE-2023-27043, CVE-2024-6232, CVE-2024-6923, CVE-2025-59375, CVE-2026-3219, CVE-2026-6357 applied in versions: 3.10.5-r0, 3.11.1-r0, 3.11.5-r0, 3.12.12-r0, 3.12.13-r0, 3.12.3-r2, 3.12.6-r0, 3.6.8-r1, 3.7.5-r0, 3.8.2-r0, 3.8.4-r0, 3.8.5-r0, 3.8.7-r2, 3.8.8-r0, 3.9.4-r0, 3.9.5-r0",
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"CVE-2019-16056",
"CVE-2019-16935",
"CVE-2019-20907",
"CVE-2019-5010",
"CVE-2020-14422",
"CVE-2020-8492",
"CVE-2021-23336",
"CVE-2021-29921",
"CVE-2021-3177",
"CVE-2022-45061",
"CVE-2023-27043",
"CVE-2024-6232",
"CVE-2024-6923",
"CVE-2025-59375",
"CVE-2026-3219",
"CVE-2026-6357"
],
"withdrawn": "2026-09-18T11:59:01.768079Z"
}
CVE-2015-20107 (GCVE-0-2015-20107)
Vulnerability from cvelistv5 – Published: 2022-04-13 00:00 – Updated: 2025-11-03 21:43
VLAI
EPSS
VEX
Summary
In Python (aka CPython) up to 3.10.8, the mailcap module does not add escape characters into commands discovered in the system mailcap file. This may allow attackers to inject shell commands into applications that call mailcap.findmatch with untrusted input (if they lack validation of user-provided filenames or arguments). The fix is also back-ported to 3.7, 3.8, 3.9
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
30 references
| URL | Tags |
|---|---|
| https://bugs.python.org/issue24778 | |
| https://github.com/python/cpython/issues/68966 | |
| https://security.netapp.com/advisory/ntap-2022061… | |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://python-security.readthedocs.io/vuln/mailc… | |
| https://security.gentoo.org/glsa/202305-02 | vendor-advisory |
| https://lists.debian.org/debian-lts-announce/2023… | mailing-list |
| https://lists.debian.org/debian-lts-announce/2023… | mailing-list |
| https://lists.debian.org/debian-lts-announce/2024… |
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CVE-2015-2104 (GCVE-0-2015-2104)
Vulnerability from cvelistv5 – Published: 2020-02-19 13:31 – Updated: 2020-02-19 13:31
VLAI
EPSS
VEX
DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: none
Show details on NVD website{
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CVE-2019-16056 (GCVE-0-2019-16056)
Vulnerability from cvelistv5 – Published: 2019-09-06 17:24 – Updated: 2024-08-05 01:03
VLAI
EPSS
VEX
Summary
An issue was discovered in Python through 2.7.16, 3.x through 3.5.7, 3.6.x through 3.6.9, and 3.7.x through 3.7.4. The email module wrongly parses email addresses that contain multiple @ characters. An application that uses the email module and implements some kind of checks on the From/To headers of a message could be tricked into accepting an email address that should be denied. An attack may be the same as in CVE-2019-11340; however, this CVE applies to Python more generally.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
34 references
| URL | Tags |
|---|---|
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
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| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://usn.ubuntu.com/4151-1/ | vendor-advisoryx_refsource_UBUNTU |
| https://usn.ubuntu.com/4151-2/ | vendor-advisoryx_refsource_UBUNTU |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| https://access.redhat.com/errata/RHSA-2019:3725 | vendor-advisoryx_refsource_REDHAT |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
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| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://access.redhat.com/errata/RHSA-2019:3948 | vendor-advisoryx_refsource_REDHAT |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
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| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| https://www.oracle.com/security-alerts/cpuapr2020.html | x_refsource_MISC |
| https://www.oracle.com/security-alerts/cpujul2020.html | x_refsource_MISC |
| https://bugs.python.org/issue34155 | x_refsource_MISC |
| https://github.com/python/cpython/commit/8cb65d13… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2019092… | x_refsource_CONFIRM |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-listx_refsource_MLIST |
| https://lists.apache.org/thread.html/r1b103833cb5… | mailing-listx_refsource_MLIST |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-listx_refsource_MLIST |
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CVE-2019-16935 (GCVE-0-2019-16935)
Vulnerability from cvelistv5 – Published: 2019-09-28 01:33 – Updated: 2024-08-05 01:24
VLAI
EPSS
VEX
Summary
The documentation XML-RPC server in Python through 2.7.16, 3.x through 3.6.9, and 3.7.x through 3.7.4 has XSS via the server_title field. This occurs in Lib/DocXMLRPCServer.py in Python 2.x, and in Lib/xmlrpc/server.py in Python 3.x. If set_server_title is called with untrusted input, arbitrary JavaScript can be delivered to clients that visit the http URL for this server.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
23 references
| URL | Tags |
|---|---|
| https://usn.ubuntu.com/4151-1/ | vendor-advisoryx_refsource_UBUNTU |
| https://usn.ubuntu.com/4151-2/ | vendor-advisoryx_refsource_UBUNTU |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| https://www.oracle.com/security-alerts/cpujul2020.html | x_refsource_MISC |
| https://bugs.python.org/issue38243 | x_refsource_MISC |
| https://github.com/python/cpython/pull/16373 | x_refsource_MISC |
| https://github.com/python/cpython/blob/e007860b8b… | x_refsource_MISC |
| https://github.com/python/cpython/blob/35c0809158… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2019101… | x_refsource_CONFIRM |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-listx_refsource_MLIST |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
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CVE-2019-20907 (GCVE-0-2019-20907)
Vulnerability from cvelistv5 – Published: 2020-07-13 00:00 – Updated: 2024-08-05 02:53
VLAI
EPSS
VEX
Summary
In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
27 references
| URL | Tags |
|---|---|
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://usn.ubuntu.com/4428-1/ | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://security.gentoo.org/glsa/202008-01 | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-list |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisory |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisory |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisory |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-list |
| https://www.oracle.com/security-alerts/cpujan2021.html | |
| https://bugs.python.org/issue39017 | |
| https://github.com/python/cpython/pull/21454 | |
| https://security.netapp.com/advisory/ntap-2020073… | |
| https://lists.debian.org/debian-lts-announce/2023… | mailing-list |
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CVE-2019-5010 (GCVE-0-2019-5010)
Vulnerability from cvelistv5 – Published: 2019-10-31 20:05 – Updated: 2024-08-04 19:40
VLAI
EPSS
VEX
Summary
An exploitable denial-of-service vulnerability exists in the X509 certificate parser of Python.org Python 2.7.11 / 3.6.6. A specially crafted X509 certificate can cause a NULL pointer dereference, resulting in a denial of service. An attacker can initiate or accept TLS connections using crafted certificates to trigger this vulnerability.
Severity
5.9 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2019:3520 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2019:3725 | vendor-advisoryx_refsource_REDHAT |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| https://security.gentoo.org/glsa/202003-26 | vendor-advisoryx_refsource_GENTOO |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-listx_refsource_MLIST |
| https://lists.apache.org/thread.html/r1b103833cb5… | mailing-listx_refsource_MLIST |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-listx_refsource_MLIST |
| https://talosintelligence.com/vulnerability_repor… | x_refsource_MISC |
Impacted products
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CVE-2020-14422 (GCVE-0-2020-14422)
Vulnerability from cvelistv5 – Published: 2020-06-18 00:00 – Updated: 2024-08-04 12:46
VLAI
EPSS
VEX
Summary
Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10, v3.5.10rc1; v3.6.12; v3.7.9; v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1; v3.9.0, v3.9.0b4, v3.9.0b5, v3.9.0rc1, v3.9.0rc2.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
24 references
| URL | Tags |
|---|---|
| https://bugs.python.org/issue41004 | |
| https://github.com/python/cpython/pull/20956 | |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisory |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisory |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-list |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisory |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://usn.ubuntu.com/4428-1/ | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://security.gentoo.org/glsa/202008-01 | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://www.oracle.com/security-alerts/cpujan2021.html | |
| https://security.netapp.com/advisory/ntap-2020072… | |
| https://lists.debian.org/debian-lts-announce/2023… | mailing-list |
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CVE-2020-8492 (GCVE-0-2020-8492)
Vulnerability from cvelistv5 – Published: 2020-01-30 00:00 – Updated: 2024-08-04 10:03
VLAI
EPSS
VEX
Summary
Python 2.7 through 2.7.17, 3.5 through 3.5.9, 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1 allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client because of urllib.request.AbstractBasicAuthHandler catastrophic backtracking.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
16 references
| URL | Tags |
|---|---|
| https://bugs.python.org/issue39503 | |
| https://python-security.readthedocs.io/vuln/urlli… | |
| https://github.com/python/cpython/pull/18284 | |
| https://security.netapp.com/advisory/ntap-2020022… | |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisory |
| https://usn.ubuntu.com/4333-1/ | vendor-advisory |
| https://usn.ubuntu.com/4333-2/ | vendor-advisory |
| https://security.gentoo.org/glsa/202005-09 | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-list |
| https://lists.apache.org/thread.html/rdb31a608dd6… | mailing-list |
| https://lists.apache.org/thread.html/rfec113c7331… | mailing-list |
| https://lists.debian.org/debian-lts-announce/2023… | mailing-list |
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CVE-2021-23336 (GCVE-0-2021-23336)
Vulnerability from cvelistv5 – Published: 2021-02-15 12:15 – Updated: 2025-12-17 21:16
VLAI
EPSS
VEX
Title
Web Cache Poisoning
Summary
The package python/cpython from 0 and before 3.6.13, from 3.7.0 and before 3.7.10, from 3.8.0 and before 3.8.8, from 3.9.0 and before 3.9.2 are vulnerable to Web Cache Poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs by using a vector called parameter cloaking. When the attacker can separate query parameters using a semicolon (;), they can cause a difference in the interpretation of the request between the proxy (running with default configuration) and the server. This can result in malicious requests being cached as completely safe ones, as the proxy would usually not see the semicolon as a separator, and therefore would not include it in a cache key of an unkeyed parameter.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-17 21:16 UTC
CWE
- Web Cache Poisoning
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
37 references
| URL | Tags |
|---|---|
| https://snyk.io/vuln/SNYK-UPSTREAM-PYTHONCPYTHON-… | |
| https://github.com/python/cpython/pull/24297 | |
| https://snyk.io/blog/cache-poisoning-in-popular-o… | |
| http://www.openwall.com/lists/oss-security/2021/02/19/4 | mailing-list |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-list |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.apache.org/thread.html/rf9fa47ab664… | mailing-list |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-list |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-list |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://security.gentoo.org/glsa/202104-04 | vendor-advisory |
| https://lists.apache.org/thread.html/ra8ce70088ba… | mailing-list |
| http://www.openwall.com/lists/oss-security/2021/05/01/2 | mailing-list |
| https://lists.apache.org/thread.html/rc005f4de9d9… | mailing-list |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://www.oracle.com/security-alerts/cpuApr2021.html | |
| https://security.netapp.com/advisory/ntap-2021032… | |
| https://www.oracle.com//security-alerts/cpujul2021.html | |
| https://www.oracle.com/security-alerts/cpuoct2021.html | |
| https://www.oracle.com/security-alerts/cpujan2022.html | |
| https://lists.debian.org/debian-lts-announce/2023… | mailing-list |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | python/cpython |
Affected:
0 , < unspecified
(custom)
Affected: unspecified , < 3.6.13 (custom) Affected: 3.7.0 , < unspecified (custom) Affected: unspecified , < 3.7.10 (custom) Affected: 3.8.0 , < unspecified (custom) Affected: unspecified , < 3.8.8 (custom) Affected: 3.9.0 , < unspecified (custom) Affected: unspecified , < 3.9.2 (custom) |
Date Public
2021-02-15 00:00
Credits
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CVE-2021-29921 (GCVE-0-2021-29921)
Vulnerability from cvelistv5 – Published: 2021-05-06 00:00 – Updated: 2025-11-03 21:44
VLAI
EPSS
VEX
Summary
In Python before 3,9,5, the ipaddress library mishandles leading zero characters in the octets of an IP address string. This (in some situations) allows attackers to bypass access control that is based on IP addresses.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
17 references
| URL | Tags |
|---|---|
| https://github.com/sickcodes | |
| https://docs.python.org/3/library/ipaddress.html | |
| https://github.com/python/cpython/blob/63298930fb… | |
| https://sick.codes/sick-2021-014 | |
| https://www.oracle.com//security-alerts/cpujul2021.html | |
| https://github.com/sickcodes/security/blob/master… | |
| https://python-security.readthedocs.io/vuln/ipadd… | |
| https://bugs.python.org/issue36384 | |
| https://github.com/python/cpython/pull/12577 | |
| https://github.com/python/cpython/pull/25099 | |
| https://security.netapp.com/advisory/ntap-2021062… | |
| https://www.oracle.com/security-alerts/cpuoct2021.html | |
| https://www.oracle.com/security-alerts/cpujan2022.html | |
| https://www.oracle.com/security-alerts/cpuapr2022.html | |
| https://www.oracle.com/security-alerts/cpujul2022.html | |
| https://security.gentoo.org/glsa/202305-02 | vendor-advisory |
| https://lists.debian.org/debian-lts-announce/2024… |
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Loading…
Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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