CVE Catalog

CVE-2026-1760

MediumCVSS 5.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.47%

41th percentile - higher than 41% of all known CVEs

Summary

A flaw was found in SoupServer. This HTTP request smuggling vulnerability occurs because SoupServer improperly handles requests that combine Transfer-Encoding: chunked and Connection: keep-alive headers. A remote, unauthenticated client can exploit this by sending specially crafted requests, causing SoupServer to fail to close the connection as required by RFC 9112. This allows the attacker to smuggle additional requests over the persistent connection, leading to unintended request processing and potential denial-of-service (DoS) conditions.

Risk Assessment

An attacker can smuggle additional requests, potentially leading to unintended processing and denial of service. This breaches HTTP communication integrity and service availability.

Recommendation

Upgrade SoupServer to a patched version. Until patched, consider restricting or monitoring HTTP traffic to the server.

Related vulnerabilities

Original NVD description (English source)

A flaw was found in SoupServer. This HTTP request smuggling vulnerability occurs because SoupServer improperly handles requests that combine Transfer-Encoding: chunked and Connection: keep-alive headers. A remote, unauthenticated client can exploit this by sending specially crafted requests, causing SoupServer to fail to close the connection as required by RFC 9112. This allows the attacker to smuggle additional requests over the persistent connection, leading to unintended request processing and potential denial-of-service (DoS) conditions.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS