CVE-2026-12547Low· 3.4▾ SunlitSoupAuthManager caches proxy authentication credentials without scoping them to the proxy authority (host:port). When the proxy configuration changes (e.g., via system settings or WPAD), cached Proxy-Authorization headers from the previo…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 18.7 · likelihood 0 · exploitation 0
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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
0.2%
SoupAuthManager caches proxy authentication credentials without scoping them to the proxy authority (host:port). When the proxy configuration changes (e.g., via system settings or WPAD), cached Proxy-Authorization headers from the previous proxy are sent to the new proxy, leaking credentials.
libsoup3 (all versions)Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
If changing desktop proxy settings, close any applications using libsoup, then restart the application after the setting has been changed.
Connected by shared product, vendor, weakness, or advisory.
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CVE-2026-1539Medium· 5.8Libsoup: libsoup: credential leakage via http redirects
CVE-2023-34968Medium· 5.3Samba: spotlight server-side share path disclosure
CVE-2026-66338Medium· 5.4Libsoup: libsoup: http request smuggling via permissive chunk-size parsing in soup_body_input_stream_read_chunked()
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