Redis contains a use-after-free vulnerability in the 'tlsProcessPendingData()' function, which handles the TLS pending-data list if Redis is… (CVE-2026-81934)
Description
Redis has a use-after-free vulnerability in the tlsProcessPendingData() function, which manages the TLS pending-data list when TLS support is enabled. This flaw allows a remote, unauthenticated attacker to potentially execute arbitrary commands with the privileges of the Redis server. The vulnerability affects multiple specific Redis package versions. The CVSS score is 7.1, indicating a medium severity level.
CVSS v3.1
Score 7.1high
Affected software
pkg:deb/ubuntu/redis?arch=source&distro=esm-apps/jammypkg:deb/ubuntu/redis?arch=source&distro=noblepkg:deb/ubuntu/redis?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-81934 is a use-after-free vulnerability in Redis's tlsProcessPendingData() function that handles the TLS pending-data list if Redis is configured with TLS support. This vulnerability can be exploited remotely without authentication to execute arbitrary commands with Redis server privileges. The vulnerability affects specific Redis package versions as listed. The CVSS 3.1 vector is AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H, reflecting medium severity with high impact on confidentiality, integrity, and availability.
Potential Impact
A remote attacker without authentication can exploit this use-after-free vulnerability to execute arbitrary commands on the Redis server with its privileges. This can lead to full compromise of the Redis instance, including data confidentiality, integrity, and availability impacts.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official patch or fix links are provided in the available data. Users should monitor vendor advisories for updates and apply patches once available. Until then, consider disabling TLS support if feasible or restricting network access to trusted clients to reduce exposure.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-32xw-c2hw-m34g
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-81934"]
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
Threat ID: 6a91a858acd9273b490696b2
Added to database: 08/28/2026, 15:25:12 UTC
Last enriched: 10/02/2026, 18:41:17 UTC
Last updated: 10/12/2026, 18:48:23 UTC
Views: 98
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