CVE-2026-81726
Medium
Elevated severity or exploit probability.
CVSS base
7.0
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L
EPSS — probability of exploitation (30 days)
0.3%
18.0th percentile
CISA KEV
Not listed
Weakness / dates
CWE-73
Published 2026-08-27 · modified 2026-08-31
CVSS breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L
| Attack Vector | N | Network |
| Attack Complexity | H | High |
| Privileges Required | N | None |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | H | High |
| Integrity | L | Low |
| Availability | L | Low |
Timeline
- 2026-08-27 — Published (NVD)
- 2026-08-31 — Last modified (NVD)
Description
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.