# RHSA-2026:81522: pcre2 security update

RHSA-2026:81522, released September 11, 2026, fixes 4 CVEs in pcre2 (version 10.44-1.5.el10_2). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-81522
- Platform: Linux
- Released: Sep 11, 2026
- Priority: High (Closes CVE-2026-89157, high severity)
- CVEs: 4, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:81522

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [pcre2](https://patchblox.com/security/data/product/linux/pcre2.md) | RHEL 10 | 10.44-1.5.el10_2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-89157](https://patchblox.com/security/data/cve/CVE-2026-89157.md) | High | PCRE2 before 10.48, on 32-bit platforms, has a pcre2_pattern_convert out-of-bounds write when an attacker can provide a large pattern. | 8.2 | 0.0035 |  |
| [CVE-2026-89156](https://patchblox.com/security/data/cve/CVE-2026-89156.md) | High | PCRE2 before 10.48 has a pcre2_match out-of-bounds read after a JIT fallback when an attacker can provide invalid UTF data. | 8.2 | 0.0029 |  |
| [CVE-2026-89160](https://patchblox.com/security/data/cve/CVE-2026-89160.md) | High | PCRE2 before 10.48 has a pcre2_match out-of-bounds read during the PCRE2_MATCH_INVALID_UTF matching of an invalid UTF subject. | 8.2 | 0.0027 |  |
| [CVE-2026-89158](https://patchblox.com/security/data/cve/CVE-2026-89158.md) | High | PCRE2 before 10.48, on 32-bit platforms, has a pcre2_compile_32 integer overflow and resultant out-of-bounds write. | 8.2 | 0.0025 |  |

---

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo