CVE catalog
CVE-2024-3220
python3.11: CVE-2024-3220
- Severity
- Medium · CVSS 4.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.60% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | python3.11 | bookworm | 3.11.2-6+deb12u8 | not affected |
| Debian | python3.11 | bookworm-security | 3.11.2-6+deb12u9 | not affected |
| Alpine | python3 | 3.23 | 3.12.16-r0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python3.11 | source | bookworm | Not affected | unimportant | Not reported | Not reported |
| Alpine | python3 | apk | 3.23 | 3.12.16-r0 | Not reported | ALPINE-CVE-2024-3220 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [http://www.openwall.com/lists/oss-security/2025/02/14/8]
- [https://ftp.suse.com/pub/projects/security/]
- [https://github.com/python/cpython/commit/04a29bf8f9ff8526cd96cb7368400173303a390a]
- [https://github.com/python/cpython/commit/2f00690fd5a75305e02c99628a41439179266f29]
- [https://github.com/python/cpython/commit/35dd324f6e30735162a68cde84bb04a169004325]
- [https://github.com/python/cpython/commit/5550519259656cbb8eeac09e3dbc0d5c248a4dea]
- [https://github.com/python/cpython/commit/76f4555c4ff10f5dda58d6528c17787df41e256c]
- [https://github.com/python/cpython/commit/8d4286a3f41d36f42c4b4cf5c4451a5a8c23fe87]
- [https://github.com/python/cpython/issues/159428]
- [https://mail.python.org/archives/list/security-announce@python.org/thread/CDXW34ND2LSAOYAR5N6UNONP4ZBX4D6R/]
- [https://nvd.nist.gov/vuln/detail/CVE-2024-3220]
- [https://osv.dev/vulnerability/ALPINE-CVE-2024-3220]
- [https://osv.dev/vulnerability/PSF-2025-2]
- [https://security-tracker.debian.org/tracker/CVE-2024-3220]
- [https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-3220.json]
- [https://security.netapp.com/advisory/ntap-20250314-0001/]
- [https://wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-0379.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]