CVE-2026-6324: Red Hat Enterprise Linux 10 · HTTP Request/Response Smuggling
Affects Red Hat Enterprise Linux 10Source CVE Database V5
Not known to be exploited · CVSS 4.8 Medium.
Data as of 30 Oct 2026, 06:59 UTC
- 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:NExploitation evidence
Disclosed: evidence found.
CVE published 29 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10libsoup3 | Affected– | Fixed in– |
| Red Hat Enterprise Linux 6libsoup | Affected– | Fixed in– |
| Red Hat Enterprise Linux 7libsoup | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8libsoup | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9libsoup | Affected– | 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.