Bug#1146873: nltk: CVE-2026-81726

[Salvatore Bonaccorso]

Source: nltk
Version: 3.10.3-1
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for nltk.

CVE-2026-81726[0]:
| NLTK through 3.10.3 contains a path traversal vulnerability in
| model-artifact APIs that bypass pathsec enforcement by using raw
| file operations on caller-controlled paths. Attackers can read or
| write files outside allowed sandbox roots through TransitionParser,
| AveragedPerceptron, PerceptronTagger, and maxent parameter APIs when
| pathsec is enabled.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-81726
    https://www.cve.org/CVERecord?id=CVE-2026-81726
[1] https://github.com/nltk/nltk/security/advisories/GHSA-8mgp-746c-j5xp

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore