CVE-2026-91095

A flaw was found in proxygen. A remote attacker could cause a Denial of Service DoS or potentially execute arbitrary code by exploiting a use-after-free vulnerability. During WebTransport stream processing, internal handlers can return stream references that have already been deallocated and...

CVE-2026-91096

A flaw was found in proxygen. The WebTransport implementation fails to unregister read callbacks for closed streams before destroying them. This issue results in a use-after-free condition, where the transport attempts to invoke memory that has already been released. A remote attacker can exploit...

CVE-2026-91095

In proxygen from v2024.10.28.00 until v2026.09.28.00, the HTTPTransaction::onWebTransportUniStream and HTTPTransaction::onWebTransportBidiStream APIs could return stream handles that the stream handler had already freed. HQSession then installed those handles as transport read callbacks, which...

CVE-2026-91095

A use-after-free vulnerability exists in proxygen versions v2024.10.28.00 through v2026.09.28.00 . The flaw occurs because the HTTPTransaction::onWebTransportUniStream and HTTPTransaction::onWebTransportBidiStream APIs may return stream handles that have already been deallocated by the stream han...

EUVD-2026-88544

In proxygen from v2024.10.28.00 until v2026.09.28.00, the HTTPTransaction::onWebTransportUniStream and HTTPTransaction::onWebTransportBidiStream APIs could return stream handles that the stream handler had already freed. HQSession then installed those handles as transport read callbacks, which...

CVE-2026-84894

In moxygen before commit 004123dd24c3, MoQSession::dataStreamReadLoop keeps using a stream read handle after reading a FIN, which invalidates the handle under proxygen's WebTransport API. A remote peer can trigger the stale use by opening a data stream that names an unknown track alias and carrie...

CVE-2026-84894

In moxygen before commit 004123dd24c3, MoQSession::dataStreamReadLoop keeps using a stream read handle after reading a FIN, which invalidates the handle under proxygen's WebTransport API. A remote peer can trigger the stale use by opening a data stream that names an unknown track alias and carrie...

CVE-2026-84894

In moxygen before commit 004123dd24c3, MoQSession::dataStreamReadLoop keeps using a stream read handle after reading a FIN, which invalidates the handle under proxygen's WebTransport API. A remote peer can trigger the stale use by opening a data stream that names an unknown track alias and carrie...

EUVD-2026-88433

In moxygen before commit 004123dd24c3, MoQSession::dataStreamReadLoop keeps using a stream read handle after reading a FIN, which invalidates the handle under proxygen's WebTransport API. A remote peer can trigger the stale use by opening a data stream that names an unknown track alias and carrie...

CVE-2026-84894

In moxygen before commit 004123dd24c3, MoQSession::dataStreamReadLoop keeps using a stream read handle after reading a FIN, which invalidates the handle under proxygen's WebTransport API. A remote peer can trigger the stale use by opening a data stream that names an unknown track alias and carrie...

CVE-2026-84894

The moxygen library is vulnerable to a memory safety issue in versions prior to commit 004123dd24c3 . Specifically, the MoQSession::dataStreamReadLoop continues to use a stream read handle after a FIN has been read, which leads to the use of an invalidated handle under the proxygen WebTransport A...

CVE-2026-84894: Use After Free

In moxygen before commit 004123dd24c3, MoQSession::dataStreamReadLoop keeps using a stream read handle after reading a FIN, which invalidates the handle under proxygen's WebTransport API. A remote peer can trigger the stale use by opening a data stream that names an unknown track alias and carrie...

PT-2026-102325

Name of the Vulnerable Software and Affected Versions moxygen versions prior to commit 004123dd24c3 Description The MoQSession::dataStreamReadLoop function continues to use a stream read handle after a FIN a signal indicating the end of a data stream has been read. This action invalidates the...

CVE-2026-57497

webtransport-go is an implementation of the WebTransport protocol. Prior to 0.11.1, Session.parseNextCapsule in session.go skips an unknown WebTransport capsule on the HTTP/3 request stream by calling io.ReadAll on the capsule reader, retaining the complete declared capsule body in memory. A...

CVE-2026-57497 webtransport-go: Memory Exhaustion Attack due to Buffering of Unknown Capsules

webtransport-go is an implementation of the WebTransport protocol. Prior to 0.11.1, Session.parseNextCapsule in session.go skips an unknown WebTransport capsule on the HTTP/3 request stream by calling io.ReadAll on the capsule reader, retaining the complete declared capsule body in memory. A...

CVE-2026-57497 webtransport-go: Memory Exhaustion Attack due to Buffering of Unknown Capsules

webtransport-go is an implementation of the WebTransport protocol. Prior to 0.11.1, Session.parseNextCapsule in session.go skips an unknown WebTransport capsule on the HTTP/3 request stream by calling io.ReadAll on the capsule reader, retaining the complete declared capsule body in memory. A...

CVE-2026-57497 webtransport-go: Memory Exhaustion Attack due to Buffering of Unknown Capsules

webtransport-go is an implementation of the WebTransport protocol. Prior to 0.11.1, Session.parseNextCapsule in session.go skips an unknown WebTransport capsule on the HTTP/3 request stream by calling io.ReadAll on the capsule reader, retaining the complete declared capsule body in memory. A...

CVE-2026-57497

webtransport-go (a Go implementation of the WebTransport protocol in the quic-go project) is vulnerable to a memory exhaustion attack prior to version 0.11.1 . The function Session.parseNextCapsule() in session.go calls io.ReadAll on the capsule reader, retaining the full declared capsule body in...

EUVD-2026-77618

webtransport-go is an implementation of the WebTransport protocol. Prior to 0.11.1, Session.parseNextCapsule in session.go skips an unknown WebTransport capsule on the HTTP/3 request stream by calling io.ReadAll on the capsule reader, retaining the complete declared capsule body in memory. A...

Astra Linux – Vulnerability in Thunderbird, Firefox

It was possible to cause a use-after-free in the content processing side of a WebTransport connection, resulting in a potentially exploitable crash. This vulnerability has been fixed in Firefox 136, Firefox ESR 115.21, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8...