CVE-2026-89160: CWE-125 Out-of-bounds Read in PCRE PCRE2
CVE-2026-89160 is an out-of-bounds read vulnerability in PCRE2 versions from 10.34 up to but not including 10.48. The flaw occurs during the PCRE2_MATCH_INVALID_UTF matching process when handling an invalid UTF subject. This vulnerability has a low severity rating and does not impact confidentiality or integrity, only availability to a limited extent.
AI Analysis
Technical Summary
PCRE2 before version 10.48 contains a CWE-125 out-of-bounds read vulnerability triggered during the PCRE2_MATCH_INVALID_UTF matching of an invalid UTF subject string. This flaw affects versions >=10.34 and <10.48. The vulnerability can cause a limited denial of service due to an out-of-bounds read but does not affect confidentiality or integrity.
Potential Impact
The vulnerability has a CVSS score of 3.7 (low severity) with no impact on confidentiality or integrity, only a low impact on availability. There are no known exploits in the wild. The flaw could potentially cause application crashes or instability when processing invalid UTF subjects.
Mitigation Recommendations
A fix is available in PCRE2 version 10.48 and later. Users should upgrade to version 10.48 or newer to remediate this vulnerability. No other mitigation is required.
CVE-2026-89160: CWE-125 Out-of-bounds Read in PCRE PCRE2
Description
CVE-2026-89160 is an out-of-bounds read vulnerability in PCRE2 versions from 10.34 up to but not including 10.48. The flaw occurs during the PCRE2_MATCH_INVALID_UTF matching process when handling an invalid UTF subject. This vulnerability has a low severity rating and does not impact confidentiality or integrity, only availability to a limited extent.
CVSS v3.1
Score 3.7low
Affected software
PCRE
PCRE2
pkg:github/pcre2project/pcre2Run 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
PCRE2 before version 10.48 contains a CWE-125 out-of-bounds read vulnerability triggered during the PCRE2_MATCH_INVALID_UTF matching of an invalid UTF subject string. This flaw affects versions >=10.34 and <10.48. The vulnerability can cause a limited denial of service due to an out-of-bounds read but does not affect confidentiality or integrity.
Potential Impact
The vulnerability has a CVSS score of 3.7 (low severity) with no impact on confidentiality or integrity, only a low impact on availability. There are no known exploits in the wild. The flaw could potentially cause application crashes or instability when processing invalid UTF subjects.
Mitigation Recommendations
A fix is available in PCRE2 version 10.48 and later. Users should upgrade to version 10.48 or newer to remediate this vulnerability. No other mitigation is required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-09-11T04:09:06.158Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aa380d491cc7f3848a3b521
Added to database: 09/11/2026, 04:17:24 UTC
Last enriched: 09/11/2026, 04:32:42 UTC
Last updated: 09/11/2026, 04:41:01 UTC
Views: 7
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