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Redis Security Vulnerability Management

3 posts · Jul 2026 – Aug 2026

What this trail covers

This post details Redis's response to the CVE-2026-81934 vulnerability, a use-after-free flaw in TLS pending-data processing. It outlines the remediation efforts, including expedited fixes for Redis Open Source and Redis Software, and patching of Redis Cloud Essentials. Remediation for Redis Cloud Pro is underway. The post also reiterates best practices for securing Redis instances, such as strong authentication, ACLs, and restricting network access. Redis's assessment of the severity is High, with a CVSS v4.0 score of 7.5. Redis has contacted the assigning organization to review the published score.

All Redis trails
  1. Security Advisory: CVE-2026-81934 | RedisThis post details Redis's response to the CVE-2026-81934 vulnerability, a use-after-free flaw in TLS pending-data processing. It outlines the remediation efforts, including expedited fixes for Redis Open Source and Redis Software, and patching of Redis Cloud Essentials. Remediation for Redis Cloud Pro is underway. The post also reiterates best practices for securing Redis instances, such as strong authentication, ACLs, and restricting network access. Redis's assessment of the severity is High, with a CVSS v4.0 score of 7.5.
  2. Security update: Redis response to the Kimi K3 vulnerability claims | RedisThis post details Redis's response to the Kimi K3 vulnerability claims, specifically addressing three identified issues: a Redis Streams shared-NACK use-after-free, a RedisBloom TDigest out-of-bounds write, and a RedisBloom TopK RDB loader wild-free. It notes that these were duplicates of issues already reported via the bug bounty program. The post announces expedited open-source fixes for two issues (Redis 8.8.1 and older branches, plus RedisBloom security releases) and that the TopK issue has been remediated in Redis Software and Redis Cloud, with an open-source update forthcoming. It also reiterates best practices for securing Redis instances, such as strong authentication, ACLs, and network access restrictions.