CVE catalog

CVE-2026-89162

In PCRE2 before 10.48, pcre2_serialize_encode might…

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.

Severity: Medium · CVSS 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Published: Sep 11, 2026, 4:15:04 AM UTC
Updated: Sep 11, 2026, 5:16:38 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.16% · Oct 27, 2026

Projects and upstream resources

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence

Original provider fields

{
  "package_releases": [
    {
      "name": "pcre2",
      "status": "fixed",
      "release": "sid",
      "version": "10.49-1"
    },
    {
      "name": "pcre2",
      "status": "fixed",
      "release": "forky",
      "version": "10.48-3.1"
    },
    {
      "name": "pcre2",
      "status": "fixed",
      "release": "trixie",
      "version": "10.46-1~deb13u2"
    },
    {
      "name": "pcre2",
      "status": "fixed",
      "release": "trixie-security",
      "version": "10.46-1~deb13u3"
    },
    {
      "name": "pcre2",
      "status": "not affected",
      "release": "bookworm",
      "version": "10.42-1"
    },
    {
      "name": "pcre2",
      "status": "not affected",
      "release": "bookworm-security",
      "version": "10.42-1+deb12u2"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "pcre2",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "10.48-1"
    },
    {
      "bug": null,
      "name": "pcre2",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "10.48-1"
    },
    {
      "bug": null,
      "name": "pcre2",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": "10.46-1~deb13u2"
    },
    {
      "bug": null,
      "name": "pcre2",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "unimportant",
      "fixed_version": "0"
    }
  ],
  "distribution_packages": [
    {
      "name": "pcre2",
      "ranges": [],
      "ecosystem": "cpe",
      "fixed_version": "",
      "provider_record_id": "NVD-CVE-2026-89162"
    },
    {
      "name": "pcre2",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "10.45"
            },
            {
              "fixed": "10.48-r0"
            }
          ]
        }
      ],
      "release": "3.23",
      "versions": [],
      "ecosystem": "apk",
      "fixed_version": "10.48-r0",
      "provider_record_id": "ALPINE-CVE-2026-89162"
    },
    {
      "name": "pcre2",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "10.45"
            },
            {
              "fixed": "10.48-r0"
            }
          ]
        }
      ],
      "release": "3.24",
      "versions": [],
      "ecosystem": "apk",
      "fixed_version": "10.48-r0",
      "provider_record_id": "ALPINE-CVE-2026-89162"
    },
    {
      "name": "pcre2",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "10.45"
            },
            {
              "fixed": "10.46-r1"
            }
          ]
        }
      ],
      "release": "3.22",
      "versions": [],
      "ecosystem": "apk",
      "fixed_version": "10.46-r1",
      "provider_record_id": "ALPINE-CVE-2026-89162"
    }
  ]
}

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[libpcre2-16-0]Unknown
Source package: [pcre2]
Details (2)
- 10.42-1 · amd64 · bookworm
  Not affected
  nvd · pcre2 · debian · bookworm
- 10.42-1 · arm64 · bookworm
  Not affected
  nvd · pcre2 · debian · bookworm
[libpcre2-32-0]Unknown
Source package: [pcre2]
Details (2)
- 10.42-1 · amd64 · bookworm
  Not affected
  nvd · pcre2 · debian · bookworm
- 10.42-1 · arm64 · bookworm
  Not affected
  nvd · pcre2 · debian · bookworm
[libpcre2-8-0]Unknown
Source package: [pcre2]
Details (2)
- 10.42-1 · amd64 · bookworm
  Not affected
  nvd · pcre2 · debian · bookworm
- 10.42-1 · arm64 · bookworm
  Not affected
  nvd · pcre2 · debian · bookworm
[libpcre2-dev]Unknown
Source package: [pcre2]
Details (2)
- 10.42-1 · amd64 · bookworm
  Not affected
  nvd · pcre2 · debian · bookworm
- 10.42-1 · arm64 · bookworm
  Not affected
  nvd · pcre2 · debian · bookworm
[libpcre2-posix3]Unknown
Source package: [pcre2]
Details (2)
- 10.42-1 · amd64 · bookworm
  Not affected
  nvd · pcre2 · debian · bookworm
- 10.42-1 · arm64 · bookworm
  Not affected
  nvd · pcre2 · debian · bookworm
[pcre2-utils]Unknown
Source package: [pcre2]
Details (2)
- 10.42-1 · amd64 · bookworm
  Not affected
  nvd · pcre2 · debian · bookworm
- 10.42-1 · arm64 · bookworm
  Not affected
  nvd · pcre2 · debian · bookworm

[Debian 13 (Trixie)]

[libpcre2-16-0]Unknown
Source package: [pcre2]
Details (3)
- 10.46-1~deb13u1 · amd64 · trixie
  Affected · Fixed: 10.46-1~deb13u2
  nvd · pcre2 · debian · 13
- 10.46-1~deb13u1 · arm64 · trixie
  Affected · Fixed: 10.46-1~deb13u2
  nvd · pcre2 · debian · 13
- 10.46-1~deb13u3 · amd64 · trixie-security
  Fixed · Fixed: 10.46-1~deb13u2
  nvd · pcre2 · debian · 13
[libpcre2-32-0]Unknown
Source package: [pcre2]
Details (3)
- 10.46-1~deb13u1 · amd64 · trixie
  Affected · Fixed: 10.46-1~deb13u2
  nvd · pcre2 · debian · 13
- 10.46-1~deb13u1 · arm64 · trixie
  Affected · Fixed: 10.46-1~deb13u2
  nvd · pcre2 · debian · 13
- 10.46-1~deb13u3 · amd64 · trixie-security
  Fixed · Fixed: 10.46-1~deb13u2
  nvd · pcre2 · debian · 13
[libpcre2-8-0]Unknown
Source package: [pcre2]
Details (3)
- 10.46-1~deb13u1 · amd64 · trixie
  Affected · Fixed: 10.46-1~deb13u2
  nvd · pcre2 · debian · 13
- 10.46-1~deb13u1 · arm64 · trixie
  Affected · Fixed: 10.46-1~deb13u2
  nvd · pcre2 · debian · 13
- 10.46-1~deb13u3 · amd64 · trixie-security
  Fixed · Fixed: 10.46-1~deb13u2
  nvd · pcre2 · debian · 13
[libpcre2-dev]Unknown
Source package: [pcre2]
Details (3)
- 10.46-1~deb13u1 · amd64 · trixie
  Affected · Fixed: 10.46-1~deb13u2
  nvd · pcre2 · debian · 13
- 10.46-1~deb13u1 · arm64 · trixie
  Affected · Fixed: 10.46-1~deb13u2
  nvd · pcre2 · debian · 13
- 10.46-1~deb13u3 · amd64 · trixie-security
  Fixed · Fixed: 10.46-1~deb13u2
  nvd · pcre2 · debian · 13
[libpcre2-posix3]Unknown
Source package: [pcre2]
Details (3)
- 10.46-1~deb13u1 · amd64 · trixie
  Affected · Fixed: 10.46-1~deb13u2
  nvd · pcre2 · debian · 13
- 10.46-1~deb13u1 · arm64 · trixie
  Affected · Fixed: 10.46-1~deb13u2
  nvd · pcre2 · debian · 13
- 10.46-1~deb13u3 · amd64 · trixie-security
  Fixed · Fixed: 10.46-1~deb13u2
  nvd · pcre2 · debian · 13
[pcre2-utils]Unknown
Source package: [pcre2]
Details (3)
- 10.46-1~deb13u1 · amd64 · trixie
  Affected · Fixed: 10.46-1~deb13u2
  nvd · pcre2 · debian · 13
- 10.46-1~deb13u1 · arm64 · trixie
  Affected · Fixed: 10.46-1~deb13u2
  nvd · pcre2 · debian · 13
- 10.46-1~deb13u3 · amd64 · trixie-security
  Fixed · Fixed: 10.46-1~deb13u2
  nvd · pcre2 · debian · 13

Observed: Oct 27, 2026, 6:29:33 AM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]