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CVE-2026-77639

5.3 medium SSVC exploitation: none Analyzed
NVD · CVE.org

Tor before 0.4.9.9 was prone to a compression bomb bypass where an attacker could concatenate many gzip or zlib sub-streams, each just under the per-stream detection threshold, to avoid the compression bomb check entirely. This is TROVE-2026-022.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 5.3 · torprojectNVD modified 2026-10-18 20:10

Affected (CPE criteria) 1

  • cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*

References 1