Description
mat2 (aka metadata anonymisation toolkit) before 0.13.0 allows ../ directory traversal during the ZIP archive cleaning process. This primarily affects mat2 web instances, in which clients could obtain sensitive information via a crafted archive.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | mat2 | 0.13.0-1 | — |
| Debian 13 | mat2 | 0.13.0-1 | — |
| Debian 12 | mat2 | 0.13.0-1 | — |
| Debian 11 | mat2 | 0.12.1-2+deb11u1 | DSA-5185-1 |
| Debian 10 | mat2 | 0.8.0-3+deb10u1 | DSA-5185-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | mat2 | No fix yet | — |
| Ubuntu 26.04 LTS | mat2 | No fix yet | — |
| Ubuntu 25.10 | mat2 | No fix yet | — |
| Ubuntu 24.04 LTS | mat2 | No fix yet | — |
| Ubuntu 22.04 LTS | mat2 | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | mat2 | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | mat2 | < 0.13.0 | 0.13.0 | GHSA-f33p-9287-h552 |
Advisories 1
- DSA-5185-1 mat2 - security update Debian Security (DSA / DLA) · Mar 9, 2026