PyPI/nltk CVE-2026-81725: medium, EPSS 0.37%
NLTK: Pl196xCorpusReader has quadratic ReDoS on malformed TEI blocks
Action: Upgrade nltk to 3.10.3 or later.
pip install nltk==3.10.3Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 3.10.3 | - |
Fixed versions
| 3.10.3 |
Sources
- osv: GHSA-8mpw-7fpc-4gqj
- https://github.com/nltk/nltk/security/advisories/GHSA-8mpw-7fpc-4gqj
- https://nvd.nist.gov/vuln/detail/CVE-2026-81725
- https://github.com/nltk/nltk/commit/7808692d451b962711005d954859bb83aabcf8fa
- https://github.com/nltk/nltk
- https://github.com/nltk/nltk/releases/tag/v3.10.3
- https://github.com/pypa/advisory-database/tree/main/vulns/nltk/PYSEC-2026-3752.yaml
- https://www.vulncheck.com/advisories/nltk-before-3.10.3-regular-expression-denial-of-service-via-pl196xcorpusreader
CVE-2026-81725 · published · modified · JSON