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Vulnerabilities

Vulnerability · CVE-2022-23308

valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes.

Published Feb 26, 2022 · catalog updated Oct 14, 2026 · valid.c in libxml2 before

Check if you run it

No confirmed exploitation is on record for CVE-2022-23308. EPSS is 5.12%. Act only if a listed version of valid.c in libxml2 before is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (valid.c in libxml2 before).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
5.12%
Remediation
Advisory link
Affected products
cpe apple/ipados · cpe apple/iphone os · cpe apple/mac os x · cpe debian/debian linux · cpe fedoraproject/fedora · cpe netapp/active iq unified manager

valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes.

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.

  • cpe apple/ipadosversion unspecified
  • cpe apple/iphone osversion unspecified
  • cpe apple/mac os x10.15.7
  • cpe debian/debian linux9.0
  • cpe fedoraproject/fedora34
  • cpe netapp/active iq unified managerversion unspecified
  • cpe netapp/bootstrap osversion unspecified
  • cpe netapp/h300s firmwareversion unspecified
  • cpe netapp/h500s firmwareversion unspecified
  • cpe xmlsoft/libxml2version unspecified

How to fix CVE-2022-23308

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-2022-23308. EPSS is 5.12%. Act only if a listed version of valid.c in libxml2 before is installed.

Which versions are affected?

Compare what you have installed with apple/mac os x 10.15.7; debian/debian linux 9.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-416: Use After Free. EPSS 5.12%. 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.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 26, 2022 · NIST NVD

    Detected

    valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes.

  2. Oct 14, 2026 · NIST NVD

    Updated

    valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes.

Sources

  • CVE.orgVulnerability recordCVE-2022-23308

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-23308

    30-day exploitation probability 5.1%

    first.org
  • NIST NVDVulnerability recordCVE-2022-23308

    valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.