PT-2026-46842

AVideo: Stored XSS via autoEvalCodeOnHTML in MessageSQLite WebSocket Handler Summary AVideo has a stored XSS vulnerability in the WebSocket messaging system. The MessageSQLite.php handler only strips autoEvalCodeOnHTML from $json'msg', but msgToResourceId reads from $msg'json' with higher priorit...

PT-2026-51364

Name of the Vulnerable Software and Affected Versions AVideo versions prior to 29.0 Description A stored DOM Cross-Site Scripting XSS issue exists in the YPTSocket plugin. An unauthenticated remote attacker can execute arbitrary JavaScript in the authenticated origin of any administrator viewing ...

PT-2026-49154

Unauthenticated Stored DOM XSS via page title Broadcast in AVideo YPTSocket Plugin Summary A stored DOM Cross-Site Scripting vulnerability CWE-79 in the AVideo YPTSocket plugin lets any unauthenticated remote attacker execute arbitrary JavaScript in the authenticated origin of every administrator...

Memory exhaustion via abuse of protocol length headers

Impact The frame format in draft versions of the WebSocket protocol includes a length header that allows an arbitrarily large integer to be encoded as a sequence of bytes with the high bit set. By sending an indefinite sequence of bytes with values 0x80 or above, a server or client can make the...

PT-2026-46893

Name of the Vulnerable Software and Affected Versions AVideo versions 29.0 and earlier Description An authenticated attacker can execute arbitrary JavaScript in the browser session of any connected user through the WebSocket messaging system. This is possible because the MessageSQLite.php handler...

Memory exhaustion in HTTP header parser

Impact If this library is used to implement a WebSocket server on top of a TCP server rather than an HTTP server or framework using the WebSocket::Driver.server method, or, if it is used to complement a WebSocket client, then a peer can make a single connection consume an unbounded amount of memo...

Allocation of Resources Without Limits or Throttling

Overview daphne is a Django ASGI HTTP/WebSocket server Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling due to the lack of enforced limits on WebSocket message and frame sizes in the WebSocketServerFactory process. An attacker can exhaust...

CVE-2026-6657

A vulnerability in jupyter-server versions 1.12.0 through 2.17.0 allows an attacker to bypass CORS origin validation when the alloworiginpat configuration is used. The issue arises from the use of re.match for validating the Origin header, which only anchors at the start of the string. This allow...

undici: undici WebSocket client vulnerable to denial of service via cumulative fragment bypass

A flaw was found in undici. A malicious WebSocket server could exploit this vulnerability by sending fragmented messages that individually meet size limits but collectively exceed them. This can lead to unbounded memory growth in the client process, resulting in memory exhaustion and a denial of...

GHSA-XH68-HFP5-5X5M daphne: WebSocket handshake header smuggling through autobahn splitlines() mishandling of non-standard line separators

daphne before 4.2.2 reconstructs a raw HTTP request from Twisted's parsed headers and feeds it to autobahn for WebSocket handshake processing. Twisted does not treat \x0b, \x0c, \x1c, \x1d, \x1e, or \x85 as header line separators, but autobahn decodes header values to str and calls splitlines. An...

GHSA-RRC9-MX66-FFCM daphne: Unauthenticated attackers can cause excessive memory consumption by sending arbitrarily large WebSocket messages/frames

daphne before 4.2.2 did not pass maxFramePayloadSize or maxMessagePayloadSize to Autobahn's WebSocketServerFactory. Because Autobahn defaults both values to 0 unlimited, an unauthenticated remote attacker could send arbitrarily large WebSocket messages or frames, causing excessive memory...

EUVD-2026-34104

A vulnerability in jupyter-server versions 1.12.0 through 2.17.0 allows an attacker to bypass CORS origin validation when the alloworiginpat configuration is used. The issue arises from the use of re.match for validating the Origin header, which only anchors at the start of the string. This allow...

CVE-2026-6657

A vulnerability in jupyter-server versions 1.12.0 through 2.17.0 allows an attacker to bypass CORS origin validation when the alloworiginpat configuration is used. The issue arises from the use of re.match for validating the Origin header, which only anchors at the start of the string. This allow...

CVE-2026-6657 CORS Origin Validation Bypass in jupyter-server

A vulnerability in jupyter-server versions 1.12.0 through 2.17.0 allows an attacker to bypass CORS origin validation when the alloworiginpat configuration is used. The issue arises from the use of re.match for validating the Origin header, which only anchors at the start of the string. This allow...

CVE-2026-6657 CORS Origin Validation Bypass in jupyter-server

A vulnerability in jupyter-server versions 1.12.0 through 2.17.0 allows an attacker to bypass CORS origin validation when the alloworiginpat configuration is used. The issue arises from the use of re.match for validating the Origin header, which only anchors at the start of the string. This allow...

CVE-2026-6657

CVE-2026-6657 affects jupyter-server versions 1.12.0–2.17.0. Root cause: use of re.match() for Origin validation in allow_origin_pat, allowing attacker-controlled domains to bypass CORS checks (e.g., trusted.example.com.evil.com) across CORS headers, WebSocket, referer validation, and login redir...

Information Disclosure org.apache.tomcat:tomcat-websocket Dependency in Confluence Data Center

This High severity Information Disclosure vulnerability was introduced in versions 6.13.0, 7.4.0, 7.13.0, 7.19.0, 8.5.0, 8.9.0, 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.1, and 10.2.0 of Confluence Data Center. This Information Disclosure vulnerability, with a CVSS Score of 7.3 and a...

PYSEC-0000-CVE-2026-44545

daphne before 4.2.2 did not pass maxFramePayloadSize or maxMessagePayloadSize to Autobahn's WebSocketServerFactory. Because Autobahn defaults both values to 0 unlimited, an unauthenticated remote attacker could send arbitrarily large WebSocket messages or frames, causing excessive memory...

CVE-2026-44546

daphne before 4.2.2 reconstructs a raw HTTP request from Twisted's parsed headers and feeds it to autobahn for WebSocket handshake processing. Twisted does not treat \x0b, \x0c, \x1c, \x1d, \x1e, or \x85 as header line separators, but autobahn decodes header values to str and calls splitlines. An...

PYSEC-0000-CVE-2026-44546

daphne before 4.2.2 reconstructs a raw HTTP request from Twisted's parsed headers and feeds it to autobahn for WebSocket handshake processing. Twisted does not treat \x0b, \x0c, \x1c, \x1d, \x1e, or \x85 as header line separators, but autobahn decodes header values to str and calls splitlines. An...