CVE-2026-72522 (Medium) detected in libexpatR_2_7_5, libexpatR_2_7_5

[mend-bolt-for-github]

CVE-2026-72522 - Medium Severity Vulnerability

Vulnerable Libraries - libexpatR_2_7_5, libexpatR_2_7_5

libexpatR_2_7_5

https://github.com/libexpat/libexpat

Library home page: https://github.com/sailfishos-mirror/libexpat.git

Vulnerable Source Files (1)

/contrib/expat/lib/xmltok.c

libexpatR_2_7_5

https://github.com/libexpat/libexpat

Library home page: https://github.com/sailfishos-mirror/libexpat.git

Vulnerable Source Files (1)

/contrib/expat/lib/xmltok.c

Found in HEAD commit: 816463d989cc5839c1cca2efb5bf2503408507fb

Found in base branches: stable/4.0, master

Vulnerability Details

libexpat before 2.8.3 has an out-of-bounds read and resultant infinite loop because low surrogates are treated the same as high surrogates during Unicode processing in the *_toUtf16 functions.

Publish Date: 2026-08-10

URL: CVE-2026-72522

CVSS 3 Score Details (6.2)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Local
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

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