CVE-2026-86145
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- CVE-2026-86145
CVE Details
| Release Date: | 2026-09-05 | |
| Impact: | Important | What is this? |
Description
PCRE2 before 10.48 allows a pcre2_dfa_match out-of-bounds write because reuse of a cached workspace block, in a recursive DFA matching workspace, lacks a size check (even though a newly allocated block, for the same purpose, does have a size check). This outcome requires an attacker-controlled regular expression, or a recursive pattern in conjunction with a small heap limit (this can be set through the API).
See more information about CVE-2026-86145 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 8.2 |
| Vector String: | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L |
| Version: | 3.1 |
| Attack Vector: | Network |
| Attack Complexity: | Low |
| Privileges Required: | None |
| User Interaction: | None |
| Scope: | Unchanged |
| Confidentiality Impact: | None |
| Integrity Impact: | High |
| Availability Impact: | Low |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 10 (pcre2) | ELSA-2026-81522 | 2026-10-13 |
| Oracle Linux version 8 (pcre2) | ELSA-2026-81613 | 2026-10-12 |
| Oracle Linux version 9 (pcre2) | ELSA-2026-81532 | 2026-10-13 |
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