CVE-2026-77639
5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| torproject | Tor | 0.3.1.1-alpha < 0.4.9.9 | affected |
Weaknesses
- CWE-420: CWE-420 Unprotected Alternate Channel
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
References
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