CVE-2026-6324: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') in Red Hat Red Hat Enterprise Linux 10
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.
AI Analysis
Technical Summary
The vulnerability CVE-2026-6324 affects the libsoup library in Red Hat Enterprise Linux 10. It is caused by an incorrect interpretation of HTTP requests due to an unsigned to signed integer conversion error in the soup_body_input_stream_read_chunked() function. This can be triggered remotely by sending a malicious HTTP request when libsoup is used in proxy configurations involving non-libsoup servers. The issue can result in HTTP request/response smuggling, enabling attackers to bypass security controls, poison web caches, or gain unauthorized access to resources.
Potential Impact
Successful exploitation allows remote attackers to bypass security controls, poison web caches, or gain unauthorized access by exploiting the HTTP request/response smuggling vulnerability in libsoup. The CVSS 3.1 base score is 4.8 (medium), reflecting low confidentiality and integrity impact with no availability impact. No known exploits in the wild have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-6324 for current remediation guidance. No official fix or workaround is currently documented in the provided advisory content.
CVE-2026-6324: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') in Red Hat Red Hat Enterprise Linux 10
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.
CVSS v3.1
Score 4.8medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-6324 affects the libsoup library in Red Hat Enterprise Linux 10. It is caused by an incorrect interpretation of HTTP requests due to an unsigned to signed integer conversion error in the soup_body_input_stream_read_chunked() function. This can be triggered remotely by sending a malicious HTTP request when libsoup is used in proxy configurations involving non-libsoup servers. The issue can result in HTTP request/response smuggling, enabling attackers to bypass security controls, poison web caches, or gain unauthorized access to resources.
Potential Impact
Successful exploitation allows remote attackers to bypass security controls, poison web caches, or gain unauthorized access by exploiting the HTTP request/response smuggling vulnerability in libsoup. The CVSS 3.1 base score is 4.8 (medium), reflecting low confidentiality and integrity impact with no availability impact. No known exploits in the wild have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-6324 for current remediation guidance. No official fix or workaround is currently documented in the provided advisory content.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-04-14T20:50:53.403Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-6324","vendor":"Red Hat"}]
Threat ID: 6a19333de29bf47b509b31b5
Added to database: 05/29/2026, 06:33:33 UTC
Last enriched: 06/24/2026, 17:21:09 UTC
Last updated: 07/31/2026, 19:23:00 UTC
Views: 73
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