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Findings

CVE-2023-29469

An issue was discovered in libxml2 before 2.10.4.

Published Apr 24, 2023 · updated Oct 14, 2026 · xmlsoft libxml2

An issue was discovered in libxml2 before 2.10.4. When hashing empty dict strings in a crafted XML document, xmlDictComputeFastKey in dict.c can produce non-deterministic values, leading to various logic and memory errors, such as a double free. This behavior occurs because there is an attempt to use the first byte of an empty string, and any value is possible (not solely the '\0' value).

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. Apr 24, 2023 · NIST NVD

    Detected

    An issue was discovered in libxml2 before 2.10.4. When hashing empty dict strings in a crafted XML document, xmlDictComputeFastKey in dict.c can produce non-deterministic values, leading to various logic and memory errors, such as a double free. This behavior occurs because there is an attempt to use the first byte of an empty string, and any value is possible (not solely the '\0' value).

  2. Oct 14, 2026 · NIST NVD

    Updated

    An issue was discovered in libxml2 before 2.10.4. When hashing empty dict strings in a crafted XML document, xmlDictComputeFastKey in dict.c can produce non-deterministic values, leading to various logic and memory errors, such as a double free. This behavior occurs because there is an attempt to use the first byte of an empty string, and any value is possible (not solely the '\0' value).

Affected

  • cpe debian/debian linux10.0
  • cpe xmlsoft/libxml2version unspecified

Sources

  • CVE.orgVulnerability recordCVE-2023-29469

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-29469

    30-day exploitation probability 1.3%

    first.org
  • NIST NVDVulnerability recordCVE-2023-29469

    An issue was discovered in libxml2 before 2.10.4. When hashing empty dict strings in a crafted XML document, xmlDictComputeFastKey in dict.c can produce non-deterministic values, leading to various logic and memory errors, such as a double free. This behavior occurs because there

    nvd.nist.gov

References