libsoup vulnerabilities
CVEs whose affected-version data names the libsoup package. Each record lists the affected and patched versions; check a specific version with the dependency checker or POST /api/sbom.
15 CVEsRSS
CVE-2026-103399Medium· 5.3A flaw was found in SoupServer (libsoup)
A flaw was found in SoupServer (libsoup). When an HTTP/1.x client sends a request with Expect: 100-continue and a request body, and SoupServer returns an early final (non-1xx) response before the body is read, the server neither drains t…
CVE-2026-102558High· 8.6A flaw was found in libsoup
A flaw was found in libsoup. When max-incoming-payload-size is unlimited (0), SoupWebsocketConnection could grow its incoming GByteArray based on an attacker-controlled frame length until the length wrapped, causing a heap buffer overflo…
CVE-2026-102555High· 8.2A flaw was found in libsoup
A flaw was found in libsoup. The soup_uri_decode_data_uri() function incorrectly treated base64 data-URI payloads as NUL-terminated strings when calling g_base64_decode_inplace(). If the percent-decoded payload contained embedded NUL byt…
CVE-2026-102560High· 8.6A flaw was found in libsoup
A flaw was found in libsoup. When the permessage-deflate WebSocket extension compresses a very large outgoing message, truncated size calculations used for GByteArray growth could wrap, causing zlib to write past the allocated buffer and…
CVE-2026-102559High· 8.6A flaw was found in libsoup
A flaw was found in libsoup. When constructing a masked WebSocket client frame for a very large outgoing payload, size values passed to GByteArray allocation APIs could be truncated while the masking routine still used the full length, c…
CVE-2026-102557High· 8.6A flaw was found in libsoup
A flaw was found in libsoup. When reassembling fragmented WebSocket messages into a GByteArray, libsoup did not adequately cap total message size against the limits of the underlying buffer type. A remote peer could send fragments that c…
CVE-2026-102556High· 8.6A flaw was found in libsoup
A flaw was found in libsoup. When handling an incoming WebSocket Pong frame, SoupWebsocketConnection emitted the ::pong signal with a GByteArray pointer even though the signal is declared to pass a GBytes. Applications connecting a handl…
CVE-2026-85197High· 7.6PoCA flaw was found in libsoup
A flaw was found in libsoup. A malicious HTTP/2 server or a Man-in-the-Middle (MITM) attacker can exploit a heap use-after-free vulnerability in the HTTP/2 client implementation. This occurs when a GNOME application uploads a file using …
CVE-2026-15709High· 7.5PoCA flaw was found in libsoup's WebSocket implementation when using the permessage-deflate extension
A flaw was found in libsoup's WebSocket implementation when using the permessage-deflate extension. The extension's decompression loop (inflate()) processes data in chunks without enforcing an upper boundary limit on the output buffer si…
CVE-2026-15711High· 7.5PoCA vulnerability was found in libsoup's WebSocket frame parsing implementation
A vulnerability was found in libsoup's WebSocket frame parsing implementation. The library fails to validate length rules specified in RFC 6455 §5.5, which mandates that all WebSocket control frames (e.g., PING, PONG, CLOSE) contain a pa…
CVE-2026-12478Medium· 4.8PoCThe fix for CVE-2026-0716 (commit 6ff7ef0, libsoup 3.6.6) placed the integer overflow guard inside the if (masked) block, leaving unmasked server-to-client frames unprotected
The fix for CVE-2026-0716 (commit 6ff7ef0, libsoup 3.6.6) placed the integer overflow guard inside the if (masked) block, leaving unmasked server-to-client frames unprotected. A malicious WebSocket server can send a crafted unmasked fram…
CVE-2026-0716Medium· 4.8PoCA flaw was found in libsoup’s WebSocket frame processing when handling incoming messages
A flaw was found in libsoup’s WebSocket frame processing when handling incoming messages. If a non-default configuration is used where the maximum incoming payload size is unset, the library may read memory outside the intended bounds. T…
CVE-2025-32910Medium· 6.5A flaw was found in libsoup, where soup_auth_digest_authenticate() is vulnerable to a NULL pointer dereference
A flaw was found in libsoup, where soup_auth_digest_authenticate() is vulnerable to a NULL pointer dereference. This issue may cause the libsoup client to crash.
CVE-2025-32909Medium· 5.3A flaw was found in libsoup
A flaw was found in libsoup. SoupContentSniffer may be vulnerable to a NULL pointer dereference in the sniff_mp4 function. The HTTP server may cause the libsoup client to crash.
CVE-2025-2784High· 7.0A flaw was found in libsoup
A flaw was found in libsoup. The package is vulnerable to a heap buffer over-read when sniffing content via the skip_insight_whitespace() function. Libsoup clients may read one byte out-of-bounds in response to a crafted HTTP response by…