CVE-2026-2369: gnome libsoup Integer Underflow (Wrap or Wraparound)

Vulnerability summary

CVE-2026-2369 is a critical (CVSS 9.1) Integer Underflow (Wrap or Wraparound) vulnerability in gnome libsoup. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 35.6% of scored vulnerabilities.

Timeline

1. 19-03-2026
   PublishedVulnerability first disclosed.
2. 28-04-2026
   Last modifiedVulnerability information updated.

Description

A flaw was found in libsoup. An integer underflow vulnerability occurs when processing content with a zero-length resource, leading to a buffer overread. This can allow an attacker to potentially access sensitive information or cause an application level denial of service.

• CWE-191Integer Underflow (Wrap or Wraparound)The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.