| Name | CVE-2026-15310 |
| Description | When decompressing crafted zip files using the bzip/LZMA/Zstandard compressions, Python could use an attacker-controlled size to pre-allocate memory, possibly resulting in memory exhaustion. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| python3.11 (PTS) | bookworm | 3.11.2-6+deb12u8 | vulnerable |
| bookworm (security) | 3.11.2-6+deb12u3 | vulnerable | |
| python3.13 (PTS) | trixie | 3.13.5-2+deb13u3 | vulnerable |
| forky, sid | 3.13.15-1 | vulnerable | |
| python3.14 (PTS) | forky | 3.14.6-1 | vulnerable |
| sid | 3.14.7-1 | vulnerable | |
| python3.15 (PTS) | forky, sid | 3.15.0~rc1-1 | vulnerable |
| python3.9 (PTS) | bullseye | 3.9.2-1 | vulnerable |
| bullseye (security) | 3.9.2-1+deb11u7 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| python3.11 | source | (unstable) | (unfixed) | |||
| python3.13 | source | (unstable) | (unfixed) | |||
| python3.14 | source | (unstable) | (unfixed) | |||
| python3.15 | source | (unstable) | (unfixed) | |||
| python3.9 | source | (unstable) | (unfixed) |
https://mail.python.org/archives/list/security-announce@python.org/thread/YUHXURX2WZGKGNA4ANYBQS2VZRYQ5JNK/
https://github.com/python/cpython/issues/156002
https://github.com/python/cpython/pull/156003
https://github.com/python/cpython/commit/f897dbf2f36a5935700b7c2d94d4681d2136b7d4 (main)