Bug 2521337 (CVE-2026-63310) - CVE-2026-63310 nltk: NLTK before 3.9.3 Missing Post-Download Integrity Verification
Summary: CVE-2026-63310 nltk: NLTK before 3.9.3 Missing Post-Download Integrity Verifi...
Keywords:
Status: NEW
Alias: CVE-2026-63310
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2526831 2526833 2526836
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-22 14:32 UTC by OSIDB Bzimport
Modified: 2026-09-01 15:05 UTC (History)
19 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Description OSIDB Bzimport 2026-08-22 14:32:02 UTC 
NLTK before 3.9.3 fails to verify file integrity after downloading packages and before extraction in the downloader module. Attackers can perform man-in-the-middle attacks or DNS poisoning to inject malicious package contents that are extracted without validation.
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