| Name | CVE-2026-23631 |
| Description | Redis is an in-memory data structure store. In all versions of redis-server with Lua scripting, an authenticated attacker can exploit the master-replica synchronization mechanism to trigger a use-after-free on replicas where replica-read-only is disabled or can be disabled, which may lead to remote code execution. A workaround is to prevent users from executing Lua scripts or avoid using replicas where replica-read-only is disabled. This is patched in version 8.6.3. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| redis (PTS) | bullseye | 5:6.0.16-1+deb11u2 | vulnerable |
| bullseye (security) | 5:6.0.16-1+deb11u8 | vulnerable | |
| bookworm | 5:7.0.15-1~deb12u6 | vulnerable | |
| bookworm (security) | 5:7.0.15-1~deb12u7 | vulnerable | |
| trixie | 5:8.0.2-3+deb13u1 | vulnerable | |
| trixie (security) | 5:8.0.2-3+deb13u2 | vulnerable | |
| forky, sid | 5:8.0.6-2 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| redis | source | experimental | 5:8.6.3-1 | |||
| redis | source | (unstable) | (unfixed) |
[bullseye] - redis <ignored> (Invasive to backport entire timedOut mechanism etc.)
https://github.com/redis/redis/security/advisories/GHSA-8ghh-qpmp-7826
https://www.zeroday.cloud/blog/redis-cve-2026-23631-dark-replica
Fixed by: https://github.com/redis/redis/commit/0cca172a174642bdae03b871615227896274d9bb (8.6.3)
check redict and valkey