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Vulnerabilities

Vulnerability · CVE-2026-89161

In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context.

Published Sep 11, 2026 · catalog updated Oct 21, 2026 · In PCRE2 before 10.48,

Check if you run it

No confirmed exploitation is on record for CVE-2026-89161. EPSS is 0.13%. Act only if a listed version of In PCRE2 before 10.48, is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (In PCRE2 before 10.48,).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.13%
Remediation
Advisory link
Affected products
Alpine:v3.21 pcre2 · Alpine:v3.22 pcre2 · Alpine:v3.23 pcre2 · Alpine:v3.24 pcre2

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Alpine:v3.21 pcre20 → 10.43-r1
  • Alpine:v3.22 pcre20 → 10.46-r1
  • Alpine:v3.23 pcre20 → 10.48-r0
  • Alpine:v3.24 pcre20 → 10.48-r0

How to fix CVE-2026-89161

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-89161. EPSS is 0.13%. Act only if a listed version of In PCRE2 before 10.48, is installed.

Which versions are affected?

Compare what you have installed with 0 → 10.43-r1, 0 → 10.46-r1, 0 → 10.48-r0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.13%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 11, 2026 · OpenSSF OSV / OSV Scanner

    Detected

    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.

  2. Oct 20, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    pcre2 fixed in 10.43-r1; pcre2 fixed in 10.48-r0; pcre2 fixed in 10.48-r0

  3. Oct 20, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    pcre2 fixed in 10.43-r1

  4. Oct 20, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    pcre2 fixed in 10.48-r0

  5. Oct 20, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    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.

  6. Oct 21, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    pcre2 fixed in 10.43-r1; pcre2 fixed in 10.46-r1; pcre2 fixed in 10.48-r0; pcre2 fixed in 10.48-r0

  7. Oct 21, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    pcre2 fixed in 10.46-r1

  8. Oct 21, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    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.

Sources

References

Freshness

Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.