Tor before 0.4.9.7 has an out-of-bounds read by one byte via a malformed BEGIN cell, aka TROVE-2026-007.

Fix status by distribution

Fixed packages published by each distribution for this CVE

• Debian DEBIAN-CVE-2026-44603 tor
• Ubuntu UBUNTU-CVE-2026-44603 tor

References

• advisory github.com
• advisory nvd.nist.gov
• patch gitlab.torproject.org
• web forum.torproject.org
• web gitlab.torproject.org
• web openwall.com