CVE-2026-63450

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 8.0.6, the FTP parser in src/app-layer-ftp.c treats a RETR or STOR command sent before PORT or PASV negotiation as a fatal application-layer error instead of a recoverabl...

CVE-2026-71855

Suricata prior to 7.0.17 and 8.0.6 contains a flow hash collision vulnerability in src/flow-hash.c . The flow hash function can treat an IPv4 and IPv6 flow as equal without comparing the IP family when their raw address words, ports, protocol, VLAN, recursion level, live device, and hash bucket a...

CVE-2026-71418

Suricata is a network IDS/IPS/NMS engine. Affected versions are 8.0.0 through 8.0.6 . The vulnerability resides in DNS-over-HTTP/2 (DoH2) processing in rust/src/http2/http2.rs, where previously processed HTTP/2 DATA frame contents are retained in the internal buffer instead of being cleared. An a...

CVE-2026-71418 Suricata doh2: crafted HTTP/2 DATA frames can cause quadratic CPU consumption

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, DNS-over-HTTP/2 processing in rust/src/http2/http2.rs retains previously processed HTTP/2 DATA frame contents instead of clearing the internal buffer...

CVE-2026-57223

Suricata (OISF network IDS/IPS engine) prior to 7.0.17 and 8.0.6 contains a local privilege escalation vulnerability in its Windows service installation logic (src/win32-service.c). The service ImagePath is passed unquoted to CreateServiceA; if Suricata is installed under a path containing spaces...

CVE-2026-63446

Suricata (OISF) versions 8.0.0 through 8.0.6 are affected by a resource exhaustion flaw in the application-layer parser. The function AppLayerParserSetTransactionInspectId() in src/app-layer-parser.c uses an inverted guard , marking only already-inspected transactions as inspected. On flows match...

CVE-2026-63447

Suricata (OISF network IDS/IPS/NSM engine) versions 8.0.5 through 8.0.6 are affected by a quadratic CPU consumption vulnerability in the FTP parser (src/app-layer-ftp.c). When processing a single large chunk of FTP command data, the parser can continue allocating transactions even after the app-l...

CVE-2026-63448

Suricata (OISF), a network IDS/IPS/NSM engine, is vulnerable to resource exhaustion in its SMB parser prior to versions 7.0.17 and 8.0.6 . On flows where Suricata observes payload in only one direction (including async-oneside flows), the parser retains force-completed transactions because cleanu...

CVE-2026-63448

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, the SMB parser can retain force-completed transactions on flows where Suricata sees payload in only one direction, including async-oneside flows, becaus...

EUVD-2026-83393

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, the SMB parser can retain force-completed transactions on flows where Suricata sees payload in only one direction, including async-oneside flows, becaus...

CVE-2026-63448 Suricata smb: some SMB flows can cause resource exhaustion

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, the SMB parser can retain force-completed transactions on flows where Suricata sees payload in only one direction, including async-oneside flows, becaus...

CVE-2026-57229

Suricata's SMTP MIME parser (rust/src/mime/smtp.rs) in versions 8.0.0 through 8.0.6 fails to fully reset state when processing Content-Type: message/rfc822 encapsulation. An outer MIME part's filename or Content-Transfer-Encoding state leaks into the inner message, allowing a crafted email to byp...

CVE-2026-63452

Suricata (OISF), a network IDS/IPS/NSM engine, is affected in versions 8.0.0 through 8.0.6 . The HTTP/1 parser enforces a per-transaction decompression limit but does not cap the total number of small brotli compression bombs a single flow can submit. When the response-body-decompress-layer-limit...

CVE-2026-63451

Suricata (OISF) versions 8.0.0 through 8.0.6 are affected by a heap buffer overflow in src/detect-engine-prefilter.c. A locally supplied detection rule that combines frame inspection without content and a transformed match without content can cause the prefilter to select multiple non-prefilter f...

CVE-2026-57227

Suricata (a network IDS/IPS/NNSM engine) has a denial-of-service vulnerability in its MQTT parser (rust/src/mqtt/mqtt.rs). The root cause is that repeated PUBREC or PUBREL messages can be appended to a single transaction without any limit, allowing crafted MQTT traffic to grow transaction state i...

EUVD-2026-83387

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 8.0.6, the FTP parser in src/app-layer-ftp.c treats a RETR or STOR command sent before PORT or PASV negotiation as a fatal application-layer error instead of a recoverabl...

CVE-2026-63450

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 8.0.6, the FTP parser in src/app-layer-ftp.c treats a RETR or STOR command sent before PORT or PASV negotiation as a fatal application-layer error instead of a recoverabl...

CVE-2026-63450

Suricata (OISF) FTP application-layer parser in src/app-layer-ftp.c, prior to 8.0.6 , escalates a protocol-recoverable command-ordering error—RETR/STOR sent before PORT/PASV negotiation —to an unrecoverable APP_LAYER_ERROR (CWE-754 ). This disables all subsequent FTP application-layer inspection ...

CVE-2026-63450 Suricata ftp: RETR/STOR before PORT/PASV can disable further IDS app-layer detection

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 8.0.6, the FTP parser in src/app-layer-ftp.c treats a RETR or STOR command sent before PORT or PASV negotiation as a fatal application-layer error instead of a recoverabl...

CVE-2026-63449

Suricata versions 8.0.0 through 8.0.6 are affected by a SIP parser flaw in rust/src/sip/parser.rs, where request and response body lengths are stored in 16-bit fields . A SIP body exceeding 65,536 bytes truncates the stored length, causing frame:request.body or frame:response.body to omit part of...