Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-77587
torproject Tor — Tor before 0.4.9.11 is prone to a use-after-free (and potential double free) of a conflux object when a recovery leg revives a conflux se…
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N N U N N H 7.5 .0040 32.4 —
AFFECTED
Product Versions Fixed
Tor 0.4.8.1-alpha – —
TIMELINE
Aug 20 Reserved by mitre
Aug 20 Published (CNA: mitre)
Sep 16 RESCORED — CVE-2026-77587 (torproject Tor). CVSS 5.9 → 7.5 (NVD).
Description
Tor before 0.4.9.11 is prone to a use-after-free (and potential double free) of a conflux object when a recovery leg revives a conflux set whose last linked leg has already been closed. A malicious exit node could use this to crash a client. This is TROVE-2026-026.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| August 20, 2026 | Reserved | Reserved by mitre |
| August 20, 2026 | Published | Published (CNA: mitre) |
| September 16, 2026 | RESCORED | RESCORED — CVE-2026-77587 (torproject Tor). CVSS 5.9 → 7.5 (NVD). |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| torproject | Tor | — | 0.4.8.1-alpha | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-77587 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
