# RHSA-2026:86205: pcre2 security update

RHSA-2026:86205, released October 13, 2026, fixes 3 CVEs in pcre2 (version 10.44-1.4.el10_0). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-86205
- Platform: Linux
- Released: Oct 13, 2026
- Priority: High (Closes CVE-2026-86145, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:86205

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [pcre2](https://patchblox.com/security/data/product/linux/pcre2.md) | RHEL 10 | 10.44-1.4.el10_0 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-86145](https://patchblox.com/security/data/cve/CVE-2026-86145.md) | High | 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). | 8.2 | 0.0043 |  |
| [CVE-2026-103111](https://patchblox.com/security/data/cve/CVE-2026-103111.md) | High | PCRE2 before 10.49, when there is an attacker-controlled regular expression and certain JIT API usage, allows an out-of-bounds write with arbitrary data. | 8.2 | 0.0027 |  |
| [CVE-2026-89161](https://patchblox.com/security/data/cve/CVE-2026-89161.md) | High | In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur. | 8.2 | 0.0013 |  |

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Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo