CVE-2026-62388
HIGHDescription
NLTK versions before 3.10.0 default to ENFORCE=False in pathsec.py, causing all security validation functions to emit warnings instead of raising exceptions. Attackers can bypass path traversal and pickle deserialization protections by exploiting the disabled security controls that are only active when manually enabled.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 38% of all known CVEs.
References
Related Vulnerabilities
Other CWE-1188 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2020-13927 | Critical | 9.8 | 100% | KEV | Fix |
| CVE-2023-27524 | High | 8.9 | 97% | KEV | - |
| CVE-2022-24706 | Critical | 9.8 | 92% | KEV | Fix |
| CVE-2020-11532 | Critical | 9.8 | 77% | - | Fix |
| CVE-2018-16752 | High | 8.8 | 36% | - | - |
| CVE-2020-14011 | Critical | 9.8 | 29% | - | - |
Common questions
How do I fix CVE-2026-62388?
Upgrade nltk on debian unstable to 3.10.0-1 or later.
Is CVE-2026-62388 being actively exploited?
Not that we know of. CVE-2026-62388 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.46% is the estimated probability that it will be exploited in the next 30 days. That is higher than 38% of all scored CVEs.
How severe is CVE-2026-62388?
CVE-2026-62388 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2026-62388 affect?
Published advisories record a fix for nltk (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
Embed a live status badge for CVE-2026-62388
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-27.