CVE-2024-4030
tempfile.mkdtemp() may be readable and writeable by all users on Windows
At a glance
- Severity
- HIGH 7.1
- EPSS
- EPSS 0.30 % · percentile 23 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- PSF
- NVD status
- Deferred
Description
On Windows a directory returned by tempfile.mkdtemp() would not always have permissions set to restrict reading and writing to the temporary directory by other users, instead usually inheriting the correct permissions from the default location. Alternate configurations or users without a profile directory may not have the intended permissions. If you’re not using Windows or haven’t changed the temporary directory location then you aren’t affected by this vulnerability. On other platforms the returned directory is consistently readable and writable only by the current user. This issue was caused by Python not supporting Unix permissions on Windows. The fix adds support for Unix “700” for the mkdir function on Windows which is used by mkdtemp() to ensure the newly created directory has the proper permissions.
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | CISA-ADP |
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
Weaknesses (CWE)
European references
- ENISA EUVD · EUVD-2024-32595
- GCVE · GCVE-0-2024-4030
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2025-AVI-1057 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2025-AVI-1024 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0969 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0756 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0622 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0055 — Multiples vulnérabilités dans Oracle PeopleSoft · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Python Software Foundation · CPython | affected 0 < 3.8.20 ; affected 3.9.0 < 3.9.20 ; affected 3.10.0 < 3.10.15 ; affected 3.11.0 < 3.11.10 ; affected 3.12.0 < 3.12.4 ; affected 3.13.0a1 < 3.13.0b1 |
References
- https://mail.python.org/archives/list/security-announce@python.org/thread/PRGS5OR3N3PNPT4BMV2VAGN5GMUI5636/
- https://github.com/python/cpython/issues/118486
- https://github.com/python/cpython/commit/81939dad77001556c527485d31a2d0f4a759033e
- https://github.com/python/cpython/commit/8ed546679524140d8282175411fd141fe7df070d
- https://github.com/python/cpython/commit/35c799d79177b962ddace2fa068101465570a29a
- https://github.com/python/cpython/commit/5130731c9e779b97d00a24f54cdce73ce9975dfd
- https://github.com/python/cpython/commit/66f8bb76a15e64a1bb7688b177ed29e26230fdee
- https://github.com/python/cpython/commit/6d0850c4c8188035643586ab4d8ec2468abd699e
- https://github.com/python/cpython/commit/91e3669e01245185569d09e9e6e11641282971ee
- https://github.com/python/cpython/commit/94591dca510c796c7d40e9b4167ea56f2fdf28ca
- https://github.com/python/cpython/commit/c8f868dc52f98011d0f9b459b6487920bfb0ac4d
- https://github.com/python/cpython/commit/d86b49411753bf2c83291e3a14ae43fefded2f84
- https://github.com/python/cpython/commit/e1dfa978b1ad210d551385ad8073ec6154f53763
- https://github.com/python/cpython/commit/eb29e2f5905da93333d1ce78bc98b151e763ff46
- https://security.netapp.com/advisory/ntap-20240705-0005/
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |