CVE-2026-78681
2 advisories.
PyPI/nltk CVE-2026-78681: high
NLTK: Entity-expansion DoS (billion laughs) via remaining raw ElementTree parses
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-97qj-x29f-37w7
- https://github.com/nltk/nltk/security/advisories/GHSA-97qj-x29f-37w7
- https://nvd.nist.gov/vuln/detail/CVE-2026-78681
- https://github.com/nltk/nltk/commit/e91789c9a043296ad04912ce171c22776d45963b
- 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-2026-3748.yaml
- https://www.vulncheck.com/advisories/nltk-before-entity-expansion-dos-via-elementtree
CVE-2026-78681 · published · modified · JSON
PyPI/nltk CVE-2026-78681: unknown
NLTK versions before 3.10.3 use xml.etree.ElementTree to parse XML in multiple modules, which honors entity declarations in document DTDs. Attackers can craft XML payloads with nested entity declarati
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-2026-3748
- https://www.vulncheck.com/advisories/nltk-before-entity-expansion-dos-via-elementtree
- https://github.com/nltk/nltk/security/advisories/GHSA-97qj-x29f-37w7
CVE-2026-78681 · published · modified · JSON