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CVE-2026-103111VulnerabilityPublished Updated

Bundesamt für Sicherheit in der Informationstechnik Amazon · PCRE (Perl Compatible Regular Expressions): Schwachstelle ermöglicht Codeausführung

Affects Bundesamt für Sicherheit in der Informationstechnik AmazonSource GCVE Database

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Authoritative record:CVE-2026-103111· High 7.6

Not known to be exploited · CVSS 7.6 High : upgrade to 10.49 soon.

Data as of 10 Nov 2026, 11:48 UTC

CVSS 3.1 base score
7.6High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 10.49
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

Upgrade PCRE2 and pcre2project/pcre2 to 10.49.

Affected software

ProductAffectedFixed in
PCREPCRE2Affected
  • <10.49
Fixed in
  • 10.49
GitHubpcre2project/pcre2pkg:github/pcre2project/pcre2Other threatsAffected
  • <10.49
Fixed in
  • 10.49

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat has released official security updates for PCRE2 packages that address CVE-2026-103111 and related vulnerabilities. Users of Red Hat Hardened Images and Red Hat Enterprise Linux 10 should apply the provided updates immediately. Detailed update instructions are available in the Red Hat advisories at https://access.redhat.com/errata/RHSA-2026:74972 and https://access.redhat.com/errata/RHSA-2026:81522. No additional mitigation steps are required beyond applying these official patches.

Description

A vulnerability in the PCRE2 (Perl Compatible Regular Expressions) library allows out-of-bounds write via crafted regular expressions, potentially enabling arbitrary code execution. This issue is tracked as CVE-2026-103111 and affects Red Hat Hardened Images and Red Hat Enterprise Linux 10 packages. Red Hat has released security updates addressing this and several related PCRE2 vulnerabilities. The updates fix out-of-bounds read and write issues, memory corruption, and denial of service conditions. No active exploitation in the wild is currently known.

References

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