CVE-2026-6324

Libsoup: libsoup: http request smuggling via unsigned to signed conversion error

State
Published
Severity
4.8 Medium
Published
May 29, 2026
Updated
May 29, 2026
Reserved
Apr 14, 2026

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Description

A flaw was found in libsoup. A remote attacker could exploit an unsigned to signed conversion error in the `soup_body_input_stream_read_chunked()` function by sending a malicious HTTP request. This vulnerability occurs when libsoup operates behind a non-libsoup proxy server or as a proxy in front of a non-libsoup backend server. Successful exploitation can allow an attacker to bypass security controls, poison web caches, or gain unauthorized access.

Scores

CVSSScoreVectorSource
3.14.8 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:Nredhat

Weaknesses

  • CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

Affected Products

ProductVersions
Red Hat Enterprise Linux 10Red Hat
    Red Hat Enterprise Linux 6Red Hat
      Red Hat Enterprise Linux 7Red Hat
        Red Hat Enterprise Linux 8Red Hat
          Red Hat Enterprise Linux 9Red Hat

            References

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