CVE-2024-0450Quoted zip-bomb protection for zipfile
- 6.2MediumCVSS base score
- 0.34%Exploitation in 30 daysEPSS · top 73% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- YesPublic exploitsa reference or SSVC says so
Description
An issue was found in the CPython `zipfile` module affecting versions 3.12.1, 3.11.7, 3.10.13, 3.9.18, and 3.8.18 and prior. The zipfile module is vulnerable to “quoted-overlap” zip-bombs which exploit the zip format to create a zip-bomb with a high compression ratio. The fixed versions of CPython makes the zipfile module reject zip archives which overlap entries in the archive.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: a proof of concept is public.
Timeline
ID reserved
By PSF
- 2 months later
· 2 months later
Published
- 20 months later
· 20 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| PSFCNA (assigner) | 3.1 | Medium6.2 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Deferred | 3.1 | Medium6.2 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.34% · top 73% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.2.
Affected products
Python Software Foundation · CPython
- affected < 3.8.19
- affected 3.9.0 – < 3.9.19
- affected 3.10.0 – < 3.10.14
- affected 3.11.0 – < 3.11.8
- affected 3.12.0 – < 3.12.2
- affected 3.13.0a1 – < 3.13.0a3
References
References18
- https://github.com/python/cpython/commit/66363b9a7b9fe7c99eba3a185b74c5fdbf842eba (opens in a new tab)patchx_transferred
- https://github.com/python/cpython/commit/fa181fcf2156f703347b03a3b1966ce47be8ab3b (opens in a new tab)patchx_transferred
- https://github.com/python/cpython/commit/a956e510f6336d5ae111ba429a61c3ade30a7549 (opens in a new tab)patchx_transferred
- https://github.com/python/cpython/commit/30fe5d853b56138dbec62432d370a1f99409fc85 (opens in a new tab)patchx_transferred
- https://github.com/python/cpython/commit/a2c59992e9e8d35baba9695eb186ad6c6ff85c51 (opens in a new tab)patchx_transferred
- https://github.com/python/cpython/commit/d05bac0b74153beb541b88b4fca33bf053990183 (opens in a new tab)patchx_transferred
- https://github.com/python/cpython/issues/109858 (opens in a new tab)issue-trackingx_transferred
- https://www.bamsoftware.com/hacks/zipbomb/ (opens in a new tab)x_transferred
- https://mail.python.org/archives/list/[email protected]/thread/XELNUX2L3IOHBTFU7RQHCY6OUVEWZ2FG/ (opens in a new tab)vendor-advisoryx_transferred
- https://lists.debian.org/debian-lts-announce/2024/03/msg00024.html (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2024/03/msg00025.html (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2024/03/20/5 (opens in a new tab)x_transferred
- https://github.com/python/cpython/commit/70497218351ba44bffc8b571201ecb5652d84675 (opens in a new tab)patchx_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/T3IGRX54M7RNCQOXVQO5KQKTGWCOABIM/ (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/U5VHWS52HGD743C47UMCSAK2A773M2YE/ (opens in a new tab)x_transferred
- https://security.netapp.com/advisory/ntap-20250411-0005/ (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2024/12/msg00000.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2024/11/msg00005.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2024-16245 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2024-0450)Record last updated .