CVE-2026-81722
2 advisories.
PyPI/nltk CVE-2026-81722: medium
NLTK: Quadratic-time DoS in PorterStemmer via long runs of 'y'
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-ww6m-cw3f-q94g
- https://github.com/nltk/nltk/security/advisories/GHSA-ww6m-cw3f-q94g
- https://nvd.nist.gov/vuln/detail/CVE-2026-81722
- 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-2026-3738.yaml
- https://www.vulncheck.com/advisories/nltk-porterstemmer-before-3.10.3-quadratic-time-dos
CVE-2026-81722 · published · modified · JSON
PyPI/nltk CVE-2026-81722: unknown
nltk PorterStemmer in versions <= 3.10.2 (fixed in 3.10.3) contains an inefficient-algorithmic-complexity denial of service in PorterStemmer.stem(). The _is_consonant() helper walks backward over the
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: PYSEC-2026-3738
- https://www.vulncheck.com/advisories/nltk-porterstemmer-before-3.10.3-quadratic-time-dos
- https://github.com/nltk/nltk/security/advisories/GHSA-ww6m-cw3f-q94g
CVE-2026-81722 · published · modified · JSON