Vulnerability Details CVE-2026-66337
A flaw was found in libsoup. An unsigned integer underflow in the soup_filter_input_stream_read_until() function causes a heap buffer over-read when parsing multipart HTTP responses. A malicious HTTP server can exploit this by sending a crafted multipart response, potentially causing the client application to crash or disclose sensitive heap memory.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 13.2%
CVSS Severity
CVSS v3 Score 6.5
References
Products affected by CVE-2026-66337
-
cpe:2.3:a:gnome:libsoup:-
-
cpe:2.3:o:redhat:enterprise_linux:10.0
-
cpe:2.3:o:redhat:enterprise_linux:6.0
-
cpe:2.3:o:redhat:enterprise_linux:7.0
-
cpe:2.3:o:redhat:enterprise_linux:8.0
-
cpe:2.3:o:redhat:enterprise_linux:9.0