PatchSiren cyber security CVE debrief
CVE-2026-1761 Red Hat CVE debrief
CVE-2026-1761 is a high-severity stack-based buffer overflow vulnerability in libsoup, a library used for parsing HTTP responses. This vulnerability can lead to memory corruption, application crashes, or arbitrary code execution in applications that process untrusted server responses. The vulnerability has a CVSS score of 8.6 and is considered high severity. The issue was publicly disclosed on February 2, 2026, and the last modification was made on June 30, 2026. The CVE record and NVD detail provide more information about this vulnerability.
- Vendor
- Red Hat
- Product
- Red Hat Enterprise Linux 10
- CVSS
- HIGH 8.6
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-02-02
- Original CVE updated
- 2026-06-30
- Advisory published
- 2026-02-02
- Advisory updated
- 2026-06-30
Who should care
Developers and administrators using libsoup in their applications should be aware of this vulnerability and take necessary steps to mitigate it. Applications that process untrusted server responses are particularly vulnerable to this issue. Red Hat has released several errata to address this vulnerability, including RHSA-2026:1948, RHSA-2026:2005, and others.
Technical summary
The vulnerability occurs during the parsing of multipart HTTP responses due to an incorrect length calculation. A remote attacker can exploit this by sending a specially crafted multipart HTTP response, which can lead to memory corruption. This issue may result in application crashes or arbitrary code execution in applications that process untrusted server responses. The vulnerability has a CVSS vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L, indicating a high severity. CWE-121 is associated with this vulnerability.
Defensive priority
This vulnerability has a high CVSS score of 8.6, indicating a high severity. Immediate attention is required to mitigate this vulnerability, especially for applications that process untrusted server responses.
Recommended defensive actions
- Review and apply Red Hat errata RHSA-2026:1948, RHSA-2026:2005, and others to ensure the vulnerability is patched.
- Verify that applications using libsoup are updated to the latest version.
- Implement additional security measures, such as input validation and error handling, to reduce the risk of exploitation.
- Monitor applications for unusual activity or crashes that may indicate exploitation attempts.
- Consider implementing compensating controls, such as web application firewalls, to detect and prevent exploitation.
Evidence notes
The CVE record and NVD detail provide more information about this vulnerability. Red Hat has released several errata to address this vulnerability. The vulnerability is caused by an incorrect length calculation during the parsing of multipart HTTP responses. The CVSS vector and CWE-121 provide additional context about the vulnerability.
Official resources
This article is AI-assisted and based on the supplied source corpus.