CVE-2026-77639

State
Published
Severity
5.3 Medium
Published
Aug 20, 2026
Updated
Aug 21, 2026
Reserved
Aug 20, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.15.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lmitre

Weaknesses

  • CWE-420 Unprotected Alternate Channel

Affected Products

ProductVersions
Tortorproject
  • 0.3.1.1-alpha to before 0.4.9.9Affected

References

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