# CVE-2026-89162: libpcre2-16-0: In PCRE2 before 10.48, pcre2_serialize_encode might disclose two bytes to an adversary, typically in a situation wher...

CVE-2026-89162 is fixed in 13 products on 1 platform, first by DEBIAN-CVE-2026-89162, released September 11, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-89162
- Priority: Routine
- CVSS: 3.3 (Medium)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 10, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libpcre2-16-0 Ubuntu 26.04.1 LTS (resolute) | 10.46-1ubuntu0.1 | [libpcre2-16-0 10.46-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libpcre2-16-0-10.46-1ubuntu0.1.md) | Sep 29, 2026 |
| Linux | libpcre2-32-0 Ubuntu 26.04.1 LTS (resolute) | 10.46-1ubuntu0.1 | [libpcre2-32-0 10.46-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libpcre2-32-0-10.46-1ubuntu0.1.md) | Sep 29, 2026 |
| Linux | libpcre2-8-0 Ubuntu 26.04.1 LTS (resolute) | 10.46-1ubuntu0.1 | [libpcre2-8-0 10.46-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libpcre2-8-0-10.46-1ubuntu0.1.md) | Sep 29, 2026 |
| Linux | libpcre2-posix3 Ubuntu 26.04.1 LTS (resolute) | 10.46-1ubuntu0.1 | [libpcre2-posix3 10.46-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libpcre2-posix3-10.46-1ubuntu0.1.md) | Sep 29, 2026 |
| Linux | mingw-pcre2 Fedora 43 | 10.48-1.fc43 | [FEDORA-2026-98F3F016C4](https://patchblox.com/security/data/fix/linux/fedora-2026-98f3f016c4.md) | Sep 15, 2026 |
| Linux | mingw32-pcre2 Fedora 43 | 10.48-1.fc43 | [FEDORA-2026-98F3F016C4](https://patchblox.com/security/data/fix/linux/fedora-2026-98f3f016c4.md) | Sep 15, 2026 |
| Linux | mingw32-pcre2-debuginfo Fedora 43 | 10.48-1.fc43 | [FEDORA-2026-98F3F016C4](https://patchblox.com/security/data/fix/linux/fedora-2026-98f3f016c4.md) | Sep 15, 2026 |
| Linux | mingw32-pcre2-static Fedora 43 | 10.48-1.fc43 | [FEDORA-2026-98F3F016C4](https://patchblox.com/security/data/fix/linux/fedora-2026-98f3f016c4.md) | Sep 15, 2026 |
| Linux | mingw64-pcre2 Fedora 43 | 10.48-1.fc43 | [FEDORA-2026-98F3F016C4](https://patchblox.com/security/data/fix/linux/fedora-2026-98f3f016c4.md) | Sep 15, 2026 |
| Linux | mingw64-pcre2-debuginfo Fedora 43 | 10.48-1.fc43 | [FEDORA-2026-98F3F016C4](https://patchblox.com/security/data/fix/linux/fedora-2026-98f3f016c4.md) | Sep 15, 2026 |
| Linux | mingw64-pcre2-static Fedora 43 | 10.48-1.fc43 | [FEDORA-2026-98F3F016C4](https://patchblox.com/security/data/fix/linux/fedora-2026-98f3f016c4.md) | Sep 15, 2026 |
| Linux | pcre2 Debian 13.5 (trixie) | 10.46-1~deb13u2 | [DEBIAN-CVE-2026-89162](https://patchblox.com/security/data/fix/linux/debian-cve-2026-89162.md) | Sep 11, 2026 |
| Linux | pcre2 Debian 14 | 10.48-1 | [DEBIAN-CVE-2026-89162](https://patchblox.com/security/data/fix/linux/debian-cve-2026-89162.md) | Sep 11, 2026 |
| Linux | pcre2 opensuse-leap 16.0 | 10.45-160000.4.1 | [OPENSUSE-SU-2026:21938-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21938-1.md) | Sep 23, 2026 |
| Linux | pcre2 sles 16.0 | 10.45-160000.4.1 | [SUSE-SU-2026:23906-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23906-1.md) | Sep 23, 2026 |
| Linux | pcre2-utils Ubuntu 26.04.1 LTS (resolute) | 10.46-1ubuntu0.1 | [pcre2-utils 10.46-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-pcre2-utils-10.46-1ubuntu0.1.md) | Sep 29, 2026 |

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Data as of 2026-11-08T00:53:09Z 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

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