HighFix available
redis — security advisory
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.
- Products
- redis
- Affected versions
- 5:6.0.15-1, 5:6.0.16-1, 5:6.0.16-1build1, 5:6.0.16-1ubuntu1, 5:6.0.16-1ubuntu1.1, 5:7.0.12-1, 5:7.0.14-1, 5:7.0.14-2, 5:7.0.15-1, 5:7.0.15-1build1, 5:7.0.15-1build2, 5:7.0.15-1ubuntu0.24.04.1, 5:7.0.15-1ubuntu0.24.04.2, 5:7.0.15-1ubuntu0.24.04.3, 5:7.0.15-1ubuntu0.24.04.4, 5:8.0.2-3build1, 5:8.0.2-3ubuntu0.25.10.1, 5:8.0.5-1
- Fixed versions
- 5:6.0.16-1ubuntu1.2, 5:7.0.15-1ubuntu0.24.04.5, 5:8.0.5-1ubuntu0.1
- CVEs
- CVE-2026-81934
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 28 Oct 2026, 09:09 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-81934
redis
Fixed versions: 5:6.0.16-1ubuntu1.2
redis
Fixed versions: 5:7.0.15-1ubuntu0.24.04.5
redis
Fixed versions: 5:8.0.5-1ubuntu0.1
Complete source record
{
"id": "29e4cfc914be3b05d9811843ad82dd7e60b04b5e12451d96f9bce9b163b93e38",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-81934",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-81934",
"summary": "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.",
"evidence": "osv:UBUNTU-CVE-2026-81934",
"products": [
{
"name": {
"value": "redis",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5:6.0.16-1ubuntu1.2",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "5:6.0.15-1",
"evidence": "/affected/0/versions"
},
{
"value": "5:6.0.16-1",
"evidence": "/affected/0/versions"
},
{
"value": "5:6.0.16-1build1",
"evidence": "/affected/0/versions"
},
{
"value": "5:6.0.16-1ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "5:6.0.16-1ubuntu1.1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
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"evidence": "/affected/1/package/name"
},
"prerequisites": [],
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{
"value": "5:7.0.15-1ubuntu0.24.04.5",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "5:7.0.12-1",
"evidence": "/affected/1/versions"
},
{
"value": "5:7.0.14-1",
"evidence": "/affected/1/versions"
},
{
"value": "5:7.0.14-2",
"evidence": "/affected/1/versions"
},
{
"value": "5:7.0.15-1",
"evidence": "/affected/1/versions"
},
{
"value": "5:7.0.15-1build1",
"evidence": "/affected/1/versions"
},
{
"value": "5:7.0.15-1build2",
"evidence": "/affected/1/versions"
},
{
"value": "5:7.0.15-1ubuntu0.24.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "5:7.0.15-1ubuntu0.24.04.2",
"evidence": "/affected/1/versions"
},
{
"value": "5:7.0.15-1ubuntu0.24.04.3",
"evidence": "/affected/1/versions"
},
{
"value": "5:7.0.15-1ubuntu0.24.04.4",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "redis",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5:8.0.5-1ubuntu0.1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "5:8.0.2-3build1",
"evidence": "/affected/2/versions"
},
{
"value": "5:8.0.2-3ubuntu0.25.10.1",
"evidence": "/affected/2/versions"
},
{
"value": "5:8.0.5-1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-81934",
"aliases": [
"UBUNTU-CVE-2026-81934"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5:6.0.16-1ubuntu1.2"
}
]
}
],
"package": {
"name": "redis",
"purl": "pkg:deb/ubuntu/redis?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"5:6.0.15-1",
"5:6.0.16-1",
"5:6.0.16-1build1",
"5:6.0.16-1ubuntu1",
"5:6.0.16-1ubuntu1.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-81934.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "redis",
"binary_version": "5:6.0.16-1ubuntu1.2"
},
{
"binary_name": "redis-sentinel",
"binary_version": "5:6.0.16-1ubuntu1.2"
},
{
"binary_name": "redis-server",
"binary_version": "5:6.0.16-1ubuntu1.2"
},
{
"binary_name": "redis-tools",
"binary_version": "5:6.0.16-1ubuntu1.2"
}
],
"availability": "No subscription required"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5:7.0.15-1ubuntu0.24.04.5"
}
]
}
],
"package": {
"name": "redis",
"purl": "pkg:deb/ubuntu/redis?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"5:7.0.12-1",
"5:7.0.14-1",
"5:7.0.14-2",
"5:7.0.15-1",
"5:7.0.15-1build1",
"5:7.0.15-1build2",
"5:7.0.15-1ubuntu0.24.04.1",
"5:7.0.15-1ubuntu0.24.04.2",
"5:7.0.15-1ubuntu0.24.04.3",
"5:7.0.15-1ubuntu0.24.04.4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-81934.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "redis",
"binary_version": "5:7.0.15-1ubuntu0.24.04.5"
},
{
"binary_name": "redis-sentinel",
"binary_version": "5:7.0.15-1ubuntu0.24.04.5"
},
{
"binary_name": "redis-server",
"binary_version": "5:7.0.15-1ubuntu0.24.04.5"
},
{
"binary_name": "redis-tools",
"binary_version": "5:7.0.15-1ubuntu0.24.04.5"
}
],
"availability": "No subscription required"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5:8.0.5-1ubuntu0.1"
}
]
}
],
"package": {
"name": "redis",
"purl": "pkg:deb/ubuntu/redis?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"5:8.0.2-3build1",
"5:8.0.2-3ubuntu0.25.10.1",
"5:8.0.5-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-81934.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "redis",
"binary_version": "5:8.0.5-1ubuntu0.1"
},
{
"binary_name": "redis-sentinel",
"binary_version": "5:8.0.5-1ubuntu0.1"
},
{
"binary_name": "redis-server",
"binary_version": "5:8.0.5-1ubuntu0.1"
},
{
"binary_name": "redis-tools",
"binary_version": "5:8.0.5-1ubuntu0.1"
}
],
"availability": "No subscription required"
}
}
],
"modified": "2026-10-08T12:55:23.403901789Z",
"provider": "osv",
"upstream": [
"CVE-2026-81934"
],
"references": [
"https://ubuntu.com/security/CVE-2026-81934",
"https://www.cve.org/CVERecord?id=CVE-2026-81934",
"https://github.com/redis/redis/commit/6d088c335d5c3ec49a6c28486140b498e70b7834",
"https://github.com/v12-security/pocs/tree/main/redis/server_ssl",
"https://raw.githubusercontent.com/redis/redis/8.10/00-RELEASENOTES",
"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://ubuntu.com/security/notices/USN-8866-1"
]
},
"related_cves": [
{
"value": "CVE-2026-81934",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 99606,
"published_at": "2026-08-27T20:18:00+00:00"
}