CVE-2026-15713Medium· 5.9▾ SunlitA vulnerability was found in libsoup's HTTP/2 protocol implementation. The library fails to correctly release memory context blocks under specific stream termination conditions, such as when an HTTP/2 connection encounters window exhaust…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 32.5 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Nov 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.3%
A vulnerability was found in libsoup's HTTP/2 protocol implementation. The library fails to correctly release memory context blocks under specific stream termination conditions, such as when an HTTP/2 connection encounters window exhaustion or explicit stream resets. A remote, unauthenticated attacker acting as a malicious network peer can trick the connection engine into allocating stream states that are subsequently leaked during cleanup. Over a sustained period, this flaw allows the remote attacker to consume the system's heap allocations incrementally, triggering a denial of service (DoS) through an ultimate Out-of-Memory (OOM) application crash.
libsoup3 (all versions)libsouplibsouplibsoup (all versions)libsoup (all versions)Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Users should avoid connecting to untrusted HTTP/2 servers. Implementing network egress filtering to restrict outbound connections to only trusted destinations can reduce exposure to this vulnerability.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-66338Medium· 5.4Libsoup: libsoup: http request smuggling via permissive chunk-size parsing in soup_body_input_stream_read_chunked()
CVE-2026-12547Low· 3.4Libsoup: information disclosure in libsoup via soupauthmanager proxy credential leak on proxy switch
CVE-2026-1801Medium· 5.3Libsoup: libsoup: http request smuggling via malformed chunk headers
CVE-2026-2443Medium· 5.3Libsoup: out-of-bounds read in libsoup handle_partial_get() leading to heap information disclosure
CVE-2026-2708Low· 3.7Libsoup: libsoup: http request smuggling via duplicate content-length headers
CVE-2026-3632Low· 3.9Libsoup: libsoup: http smuggling and server-side request forgery via malformed hostnames