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PYSEC-2026-2045
Vulnerability from pysec - Published: 2026-07-07 14:34 - Updated: 2026-07-07 17:25
VLAI
Details
On Python < 3.11 on Windows, os.path.isabs() does not catch UNC paths like //server/share. Werkzeug's safe_join() relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python >= 3.11, or not using Windows, are not vulnerable.
Severity
Impacted products
| Name | purl | werkzeug | pkg:pypi/werkzeug |
|---|
Aliases
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "werkzeug",
"purl": "pkg:pypi/werkzeug"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.6"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.1",
"0.10",
"0.10.1",
"0.10.2",
"0.10.3",
"0.10.4",
"0.11",
"0.11.1",
"0.11.10",
"0.11.11",
"0.11.12",
"0.11.13",
"0.11.14",
"0.11.15",
"0.11.2",
"0.11.3",
"0.11.4",
"0.11.5",
"0.11.6",
"0.11.7",
"0.11.8",
"0.11.9",
"0.12",
"0.12.1",
"0.12.2",
"0.13",
"0.14",
"0.14.1",
"0.15.0",
"0.15.1",
"0.15.2",
"0.15.3",
"0.15.4",
"0.15.5",
"0.15.6",
"0.16.0",
"0.16.1",
"0.2",
"0.3",
"0.3.1",
"0.4",
"0.4.1",
"0.5",
"0.5.1",
"0.6",
"0.6.1",
"0.6.2",
"0.7",
"0.7.1",
"0.7.2",
"0.8",
"0.8.1",
"0.8.2",
"0.8.3",
"0.9",
"0.9.1",
"0.9.2",
"0.9.3",
"0.9.4",
"0.9.5",
"0.9.6",
"1.0.0",
"1.0.0rc1",
"1.0.1",
"2.0.0",
"2.0.0rc1",
"2.0.0rc2",
"2.0.0rc3",
"2.0.0rc4",
"2.0.0rc5",
"2.0.1",
"2.0.2",
"2.0.3",
"2.1.0",
"2.1.1",
"2.1.2",
"2.2.0",
"2.2.0a1",
"2.2.1",
"2.2.2",
"2.2.3",
"2.3.0",
"2.3.1",
"2.3.2",
"2.3.3",
"2.3.4",
"2.3.5",
"2.3.6",
"2.3.7",
"2.3.8",
"3.0.0",
"3.0.1",
"3.0.2",
"3.0.3",
"3.0.4",
"3.0.5"
]
}
],
"aliases": [
"CVE-2024-49766",
"GHSA-f9vj-2wh5-fj8j"
],
"details": "On Python \u003c 3.11 on Windows, `os.path.isabs()` does not catch UNC paths like `//server/share`. Werkzeug\u0027s `safe_join()` relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python \u003e= 3.11, or not using Windows, are not vulnerable.",
"id": "PYSEC-2026-2045",
"modified": "2026-07-07T17:25:51.076529Z",
"published": "2026-07-07T14:34:43.390514Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/security/advisories/GHSA-f9vj-2wh5-fj8j"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49766"
},
{
"type": "FIX",
"url": "https://github.com/pallets/werkzeug/commit/2767bcb10a7dd1c297d812cc5e6d11a474c1f092"
},
{
"type": "PACKAGE",
"url": "https://github.com/pallets/werkzeug"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/releases/tag/3.0.6"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20250131-0005"
},
{
"type": "PACKAGE",
"url": "https://pypi.org/project/werkzeug"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-f9vj-2wh5-fj8j"
}
],
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Werkzeug safe_join not safe on Windows"
}
BREW-AWS-SAM-CLI-CVE-202… (GHSA-F9VJ-2WH5-FJ8J)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:37 – Updated: 2026-09-17 19:54 – Source website
VLAI
Summary
Werkzeug safe_join not safe on Windows
Details
On Python < 3.11 on Windows, os.path.isabs() does not catch UNC paths like //server/share. Werkzeug's safe_join() relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python >= 3.11, or not using Windows, are not vulnerable.
Severity
References
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "werkzeug",
"resource_purl": "pkg:pypi/werkzeug@3.1.8",
"upstream_fixed_in": "3.0.6"
},
"package": {
"ecosystem": "Homebrew",
"name": "aws-sam-cli",
"purl": "pkg:brew/aws-sam-cli"
},
"ranges": [
{
"events": [
{
"introduced": "1.70.0"
},
{
"fixed": "1.126.0_1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/werkzeug@3.1.8",
"name": "werkzeug",
"resource": "werkzeug",
"strategy": "registry",
"subject_version": "3.1.8"
}
]
},
"details": "On Python \u003c 3.11 on Windows, `os.path.isabs()` does not catch UNC paths like `//server/share`. Werkzeug\u0027s `safe_join()` relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python \u003e= 3.11, or not using Windows, are not vulnerable.",
"id": "BREW-aws-sam-cli-CVE-2024-49766",
"modified": "2026-09-17T19:54:58Z",
"published": "2026-08-13T16:37:01Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/security/advisories/GHSA-f9vj-2wh5-fj8j"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49766"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/commit/2767bcb10a7dd1c297d812cc5e6d11a474c1f092"
},
{
"type": "PACKAGE",
"url": "https://github.com/pallets/werkzeug"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/releases/tag/3.0.6"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20250131-0005"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Werkzeug safe_join not safe on Windows",
"upstream": [
"GHSA-f9vj-2wh5-fj8j",
"CVE-2024-49766",
"PYSEC-2026-2045"
]
}
BREW-BACKGROUNDREMOVER-C… (GHSA-F9VJ-2WH5-FJ8J)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:37 – Updated: 2026-09-09 23:43 – Source website
VLAI
Summary
Werkzeug safe_join not safe on Windows
Details
On Python < 3.11 on Windows, os.path.isabs() does not catch UNC paths like //server/share. Werkzeug's safe_join() relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python >= 3.11, or not using Windows, are not vulnerable.
Severity
References
| URL | Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "werkzeug",
"resource_purl": "pkg:pypi/werkzeug@3.1.8",
"upstream_fixed_in": "3.0.6"
},
"package": {
"ecosystem": "Homebrew",
"name": "backgroundremover",
"purl": "pkg:brew/backgroundremover"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.4.5"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/werkzeug@3.1.8",
"name": "werkzeug",
"resource": "werkzeug",
"strategy": "registry",
"subject_version": "3.1.8"
}
]
},
"details": "On Python \u003c 3.11 on Windows, `os.path.isabs()` does not catch UNC paths like `//server/share`. Werkzeug\u0027s `safe_join()` relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python \u003e= 3.11, or not using Windows, are not vulnerable.",
"id": "BREW-backgroundremover-CVE-2024-49766",
"modified": "2026-09-09T23:43:06Z",
"published": "2026-08-13T16:37:03Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/security/advisories/GHSA-f9vj-2wh5-fj8j"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49766"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/commit/2767bcb10a7dd1c297d812cc5e6d11a474c1f092"
},
{
"type": "PACKAGE",
"url": "https://github.com/pallets/werkzeug"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/releases/tag/3.0.6"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20250131-0005"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Werkzeug safe_join not safe on Windows",
"upstream": [
"GHSA-f9vj-2wh5-fj8j",
"CVE-2024-49766",
"PYSEC-2026-2045"
]
}
BREW-BAGELS-CVE-2024-49766 (GHSA-F9VJ-2WH5-FJ8J)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:37 – Updated: 2026-09-09 23:43 – Source website
VLAI
Summary
Werkzeug safe_join not safe on Windows
Details
On Python < 3.11 on Windows, os.path.isabs() does not catch UNC paths like //server/share. Werkzeug's safe_join() relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python >= 3.11, or not using Windows, are not vulnerable.
Severity
References
| URL | Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "werkzeug",
"resource_purl": "pkg:pypi/werkzeug@3.1.8",
"upstream_fixed_in": "3.0.6"
},
"package": {
"ecosystem": "Homebrew",
"name": "bagels",
"purl": "pkg:brew/bagels"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.3.12_14"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/werkzeug@3.1.8",
"name": "werkzeug",
"resource": "werkzeug",
"strategy": "registry",
"subject_version": "3.1.8"
}
]
},
"details": "On Python \u003c 3.11 on Windows, `os.path.isabs()` does not catch UNC paths like `//server/share`. Werkzeug\u0027s `safe_join()` relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python \u003e= 3.11, or not using Windows, are not vulnerable.",
"id": "BREW-bagels-CVE-2024-49766",
"modified": "2026-09-09T23:43:06Z",
"published": "2026-08-13T16:37:04Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/security/advisories/GHSA-f9vj-2wh5-fj8j"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49766"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/commit/2767bcb10a7dd1c297d812cc5e6d11a474c1f092"
},
{
"type": "PACKAGE",
"url": "https://github.com/pallets/werkzeug"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/releases/tag/3.0.6"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20250131-0005"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Werkzeug safe_join not safe on Windows",
"upstream": [
"GHSA-f9vj-2wh5-fj8j",
"CVE-2024-49766",
"PYSEC-2026-2045"
]
}
BREW-BUKU-CVE-2024-49766 (GHSA-F9VJ-2WH5-FJ8J)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:38 – Updated: 2026-09-17 17:30 – Source website
VLAI
Summary
Werkzeug safe_join not safe on Windows
Details
On Python < 3.11 on Windows, os.path.isabs() does not catch UNC paths like //server/share. Werkzeug's safe_join() relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python >= 3.11, or not using Windows, are not vulnerable.
Severity
References
| URL | Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "werkzeug",
"resource_purl": "pkg:pypi/werkzeug@3.1.8",
"upstream_fixed_in": "3.0.6"
},
"package": {
"ecosystem": "Homebrew",
"name": "buku",
"purl": "pkg:brew/buku"
},
"ranges": [
{
"events": [
{
"introduced": "4.5_1"
},
{
"fixed": "5.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/werkzeug@3.1.8",
"name": "werkzeug",
"resource": "werkzeug",
"strategy": "registry",
"subject_version": "3.1.8"
}
]
},
"details": "On Python \u003c 3.11 on Windows, `os.path.isabs()` does not catch UNC paths like `//server/share`. Werkzeug\u0027s `safe_join()` relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python \u003e= 3.11, or not using Windows, are not vulnerable.",
"id": "BREW-buku-CVE-2024-49766",
"modified": "2026-09-17T17:30:49Z",
"published": "2026-08-13T16:38:25Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/security/advisories/GHSA-f9vj-2wh5-fj8j"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49766"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/commit/2767bcb10a7dd1c297d812cc5e6d11a474c1f092"
},
{
"type": "PACKAGE",
"url": "https://github.com/pallets/werkzeug"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/releases/tag/3.0.6"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20250131-0005"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Werkzeug safe_join not safe on Windows",
"upstream": [
"GHSA-f9vj-2wh5-fj8j",
"CVE-2024-49766",
"PYSEC-2026-2045"
]
}
BREW-CERTSYNC-CVE-2024-49766 (GHSA-F9VJ-2WH5-FJ8J)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:39 – Updated: 2026-09-17 19:49 – Source website
VLAI
Summary
Werkzeug safe_join not safe on Windows
Details
On Python < 3.11 on Windows, os.path.isabs() does not catch UNC paths like //server/share. Werkzeug's safe_join() relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python >= 3.11, or not using Windows, are not vulnerable.
Severity
References
| URL | Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "werkzeug",
"resource_purl": "pkg:pypi/werkzeug@3.1.8",
"upstream_fixed_in": "3.0.6"
},
"package": {
"ecosystem": "Homebrew",
"name": "certsync",
"purl": "pkg:brew/certsync"
},
"ranges": [
{
"events": [
{
"introduced": "0.1.4"
},
{
"fixed": "0.1.6_1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/werkzeug@3.1.8",
"name": "werkzeug",
"resource": "werkzeug",
"strategy": "registry",
"subject_version": "3.1.8"
}
]
},
"details": "On Python \u003c 3.11 on Windows, `os.path.isabs()` does not catch UNC paths like `//server/share`. Werkzeug\u0027s `safe_join()` relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python \u003e= 3.11, or not using Windows, are not vulnerable.",
"id": "BREW-certsync-CVE-2024-49766",
"modified": "2026-09-17T19:49:46Z",
"published": "2026-08-13T16:39:03Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/security/advisories/GHSA-f9vj-2wh5-fj8j"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49766"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/commit/2767bcb10a7dd1c297d812cc5e6d11a474c1f092"
},
{
"type": "PACKAGE",
"url": "https://github.com/pallets/werkzeug"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/releases/tag/3.0.6"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20250131-0005"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Werkzeug safe_join not safe on Windows",
"upstream": [
"GHSA-f9vj-2wh5-fj8j",
"CVE-2024-49766",
"PYSEC-2026-2045"
]
}
BREW-CLOUDFORMATION-CLI-… (GHSA-F9VJ-2WH5-FJ8J)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:40 – Updated: 2026-09-17 17:52 – Source website
VLAI
Summary
Werkzeug safe_join not safe on Windows
Details
On Python < 3.11 on Windows, os.path.isabs() does not catch UNC paths like //server/share. Werkzeug's safe_join() relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python >= 3.11, or not using Windows, are not vulnerable.
Severity
References
| URL | Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "werkzeug",
"resource_purl": "pkg:pypi/werkzeug@3.1.8",
"upstream_fixed_in": "3.0.6"
},
"package": {
"ecosystem": "Homebrew",
"name": "cloudformation-cli",
"purl": "pkg:brew/cloudformation-cli"
},
"ranges": [
{
"events": [
{
"introduced": "0.1.4"
},
{
"fixed": "0.2.38_1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/werkzeug@3.1.8",
"name": "werkzeug",
"resource": "werkzeug",
"strategy": "registry",
"subject_version": "3.1.8"
}
]
},
"details": "On Python \u003c 3.11 on Windows, `os.path.isabs()` does not catch UNC paths like `//server/share`. Werkzeug\u0027s `safe_join()` relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python \u003e= 3.11, or not using Windows, are not vulnerable.",
"id": "BREW-cloudformation-cli-CVE-2024-49766",
"modified": "2026-09-17T17:52:57Z",
"published": "2026-08-13T16:40:09Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/security/advisories/GHSA-f9vj-2wh5-fj8j"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49766"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/commit/2767bcb10a7dd1c297d812cc5e6d11a474c1f092"
},
{
"type": "PACKAGE",
"url": "https://github.com/pallets/werkzeug"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/releases/tag/3.0.6"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20250131-0005"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Werkzeug safe_join not safe on Windows",
"upstream": [
"GHSA-f9vj-2wh5-fj8j",
"CVE-2024-49766",
"PYSEC-2026-2045"
]
}
BREW-FAVA-CVE-2024-49766 (GHSA-F9VJ-2WH5-FJ8J)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:46 – Updated: 2026-09-17 18:01 – Source website
VLAI
Summary
Werkzeug safe_join not safe on Windows
Details
On Python < 3.11 on Windows, os.path.isabs() does not catch UNC paths like //server/share. Werkzeug's safe_join() relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python >= 3.11, or not using Windows, are not vulnerable.
Severity
References
| URL | Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "werkzeug",
"resource_purl": "pkg:pypi/werkzeug@3.1.8",
"upstream_fixed_in": "3.0.6"
},
"package": {
"ecosystem": "Homebrew",
"name": "fava",
"purl": "pkg:brew/fava"
},
"ranges": [
{
"events": [
{
"introduced": "1.14"
},
{
"fixed": "1.29_1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/werkzeug@3.1.8",
"name": "werkzeug",
"resource": "werkzeug",
"strategy": "registry",
"subject_version": "3.1.8"
}
]
},
"details": "On Python \u003c 3.11 on Windows, `os.path.isabs()` does not catch UNC paths like `//server/share`. Werkzeug\u0027s `safe_join()` relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python \u003e= 3.11, or not using Windows, are not vulnerable.",
"id": "BREW-fava-CVE-2024-49766",
"modified": "2026-09-17T18:01:22Z",
"published": "2026-08-13T16:46:31Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/security/advisories/GHSA-f9vj-2wh5-fj8j"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49766"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/commit/2767bcb10a7dd1c297d812cc5e6d11a474c1f092"
},
{
"type": "PACKAGE",
"url": "https://github.com/pallets/werkzeug"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/releases/tag/3.0.6"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20250131-0005"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Werkzeug safe_join not safe on Windows",
"upstream": [
"GHSA-f9vj-2wh5-fj8j",
"CVE-2024-49766",
"PYSEC-2026-2045"
]
}
BREW-FLEXGET-CVE-2024-49766 (GHSA-F9VJ-2WH5-FJ8J)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:47 – Updated: 2026-09-09 23:58 – Source website
VLAI
Summary
Werkzeug safe_join not safe on Windows
Details
On Python < 3.11 on Windows, os.path.isabs() does not catch UNC paths like //server/share. Werkzeug's safe_join() relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python >= 3.11, or not using Windows, are not vulnerable.
Severity
References
| URL | Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "werkzeug",
"resource_purl": "pkg:pypi/werkzeug@3.1.8",
"upstream_fixed_in": "3.0.6"
},
"package": {
"ecosystem": "Homebrew",
"name": "flexget",
"purl": "pkg:brew/flexget"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.20.4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/werkzeug@3.1.8",
"name": "werkzeug",
"resource": "werkzeug",
"strategy": "registry",
"subject_version": "3.1.8"
}
]
},
"details": "On Python \u003c 3.11 on Windows, `os.path.isabs()` does not catch UNC paths like `//server/share`. Werkzeug\u0027s `safe_join()` relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python \u003e= 3.11, or not using Windows, are not vulnerable.",
"id": "BREW-flexget-CVE-2024-49766",
"modified": "2026-09-09T23:58:04Z",
"published": "2026-08-13T16:47:29Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/security/advisories/GHSA-f9vj-2wh5-fj8j"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49766"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/commit/2767bcb10a7dd1c297d812cc5e6d11a474c1f092"
},
{
"type": "PACKAGE",
"url": "https://github.com/pallets/werkzeug"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/releases/tag/3.0.6"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20250131-0005"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Werkzeug safe_join not safe on Windows",
"upstream": [
"GHSA-f9vj-2wh5-fj8j",
"CVE-2024-49766",
"PYSEC-2026-2045"
]
}
BREW-GDBGUI-CVE-2024-49766 (GHSA-F9VJ-2WH5-FJ8J)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:49 – Updated: 2026-09-17 19:09 – Source website
VLAI
Summary
Werkzeug safe_join not safe on Windows
Details
On Python < 3.11 on Windows, os.path.isabs() does not catch UNC paths like //server/share. Werkzeug's safe_join() relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python >= 3.11, or not using Windows, are not vulnerable.
Severity
References
| URL | Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "werkzeug",
"resource_purl": "pkg:pypi/werkzeug@3.1.3",
"upstream_fixed_in": "3.0.6"
},
"package": {
"ecosystem": "Homebrew",
"name": "gdbgui",
"purl": "pkg:brew/gdbgui"
},
"ranges": [
{
"events": [
{
"introduced": "0.13.2.0"
},
{
"fixed": "0.15.3.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/werkzeug@3.1.3",
"name": "werkzeug",
"resource": "werkzeug",
"strategy": "registry",
"subject_version": "3.1.3"
}
]
},
"details": "On Python \u003c 3.11 on Windows, `os.path.isabs()` does not catch UNC paths like `//server/share`. Werkzeug\u0027s `safe_join()` relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python \u003e= 3.11, or not using Windows, are not vulnerable.",
"id": "BREW-gdbgui-CVE-2024-49766",
"modified": "2026-09-17T19:09:55Z",
"published": "2026-08-13T16:49:15Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/security/advisories/GHSA-f9vj-2wh5-fj8j"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49766"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/commit/2767bcb10a7dd1c297d812cc5e6d11a474c1f092"
},
{
"type": "PACKAGE",
"url": "https://github.com/pallets/werkzeug"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/releases/tag/3.0.6"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20250131-0005"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Werkzeug safe_join not safe on Windows",
"upstream": [
"GHSA-f9vj-2wh5-fj8j",
"CVE-2024-49766",
"PYSEC-2026-2045"
]
}
BREW-GRIP-CVE-2024-49766 (GHSA-F9VJ-2WH5-FJ8J)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:55 – Updated: 2026-09-10 00:06 – Source website
VLAI
Summary
Werkzeug safe_join not safe on Windows
Details
On Python < 3.11 on Windows, os.path.isabs() does not catch UNC paths like //server/share. Werkzeug's safe_join() relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python >= 3.11, or not using Windows, are not vulnerable.
Severity
References
| URL | Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "werkzeug",
"resource_purl": "pkg:pypi/werkzeug@3.1.8",
"upstream_fixed_in": "3.0.6"
},
"package": {
"ecosystem": "Homebrew",
"name": "grip",
"purl": "pkg:brew/grip"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.6.2_21"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/werkzeug@3.1.8",
"name": "werkzeug",
"resource": "werkzeug",
"strategy": "registry",
"subject_version": "3.1.8"
}
]
},
"details": "On Python \u003c 3.11 on Windows, `os.path.isabs()` does not catch UNC paths like `//server/share`. Werkzeug\u0027s `safe_join()` relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python \u003e= 3.11, or not using Windows, are not vulnerable.",
"id": "BREW-grip-CVE-2024-49766",
"modified": "2026-09-10T00:06:27Z",
"published": "2026-08-13T16:55:20Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/security/advisories/GHSA-f9vj-2wh5-fj8j"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49766"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/commit/2767bcb10a7dd1c297d812cc5e6d11a474c1f092"
},
{
"type": "PACKAGE",
"url": "https://github.com/pallets/werkzeug"
},
{
"type": "WEB",
"url": "https://github.com/pallets/werkzeug/releases/tag/3.0.6"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20250131-0005"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Werkzeug safe_join not safe on Windows",
"upstream": [
"GHSA-f9vj-2wh5-fj8j",
"CVE-2024-49766",
"PYSEC-2026-2045"
]
}
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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