Low severity · published Sep 11, 2026
CVE-2026-89162
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
3.3
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PC
PCRE2 · PCRE
10.45 before 10.48 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89162
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-89162
Release Notes
https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48
Exploit
https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-q7rw-r7qq-2hx6
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