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VulnerabilityPublished

CVE-2026-6324: Red Hat Enterprise Linux 10 · HTTP Request/Response Smuggling

Affects Red Hat Enterprise Linux 10Source CVE Database V5

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Not known to be exploited · CVSS 4.8 Medium.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
4.8Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.8% chance of exploitation in 30 days – higher than 58% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10libsoup3Affected–Fixed in–
Red Hat Enterprise Linux 6libsoupAffected–Fixed in–
Red Hat Enterprise Linux 7libsoupAffected–Fixed in–
Red Hat Enterprise Linux 8libsoupAffected–Fixed in–
Red Hat Enterprise Linux 9libsoupAffected–Fixed in–

Description

CVE-2026-6324 is a medium-severity vulnerability in libsoup used by Red Hat Enterprise Linux 10. It involves an unsigned to signed conversion error in the soup_body_input_stream_read_chunked() function that can be exploited by a remote attacker sending a crafted HTTP request. This flaw occurs when libsoup is deployed behind a non-libsoup proxy or as a proxy in front of a non-libsoup backend. Exploitation can lead to bypassing security controls, cache poisoning, or unauthorized access.

References

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