Vulnerability · Published Sep 11, 2026 · Assigned by mitre
CVE-2026-89162
Low 2.9
In plain English
A low-severity security flaw in PCRE2 from PCRE. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)2.9Low
Exploit odds (30 days)0.2%top 95.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
In PCRE2 before 10.48, pcre2_serialize_encode might disclose two bytes to an adversary, typically in a situation where the access available to the adversary is already unsafe.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.22 | pcre2 | 10.46-r1 | ALPINE-CVE-2026-89162 |
| Alpine:v3.23 | pcre2 | 10.48-r0 | ALPINE-CVE-2026-89162 |
| Alpine:v3.24 | pcre2 | 10.48-r0 | ALPINE-CVE-2026-89162 |
| Debian:13 | pcre2 | 10.46-1~deb13u2 | DEBIAN-CVE-2026-89162 |
| Debian:14 | pcre2 | 10.48-1 | DEBIAN-CVE-2026-89162 |
| Ubuntu:22.04:LTS | pcre2 | 10.39-3ubuntu0.2 | USN-8974-1 |
| Ubuntu:24.04:LTS | pcre2 | 10.42-4ubuntu2.2 | USN-8974-1 |
| Ubuntu:26.04:LTS | pcre2 | 10.46-1ubuntu0.1 | USN-8974-1 |
| Ubuntu:26.04:LTS | pcre2 | 10.46-1ubuntu0.1 | UBUNTU-CVE-2026-89162 |
| Ubuntu:26.10 | pcre2 | 10.46-1ubuntu1 | UBUNTU-CVE-2026-89162 |
| Ubuntu:26.10 | pcre2 | 10.46-1ubuntu1 | USN-8974-1 |
Affected products (as reported)
Weakness: CWE-669 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N