CVE-2026-1761

A flaw was found in libsoup. This stack-based buffer overflow 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, and it does not require authentication or user interaction.

This IMPORTANT flaw in libsoup involves a stack-based buffer overflow during the parsing of multipart HTTP responses. A remote attacker can exploit this vulnerability by sending a specially crafted response, leading to memory corruption and potentially arbitrary code execution or application crashes in Red Hat products that utilize libsoup to process untrusted server responses. This issue does not require authentication or user interaction.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

To mitigate this issue, applications utilizing libsoup that process HTTP responses should be configured to only communicate with trusted endpoints. Implement network egress filtering to restrict vulnerable applications from connecting to untrusted external services, thereby reducing the exposure to specially crafted multipart HTTP responses.