CVE-2026-25800

Quinn is a pure-Rust, async-compatible implementation of the IETF QUIC transport protocol. Starting in version 0.1.0 and prior to version 0.11.15, the `Assembler` component that assembles unordered stream fragments into consecutive chunks of the stream incurs some overhead for non-contiguous fragments. Readers that read from a `RecvStream` in order (through an `AsyncRead` impl for example) will be sensitive to peers that send fragments while leaving out early parts of the stream, and in particular, fragments with many gaps (because these cannot be defragmented). In such a scenario, the receiving connection suffers from high buffer overhead, enabling memory exhaustion. Version 0.11.15 fixes the issue.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/quinn-rs/quinn/pull/2694
https://github.com/quinn-rs/quinn/security/advisories/GHSA-4w2j-m93h-cj5j
https://rustsec.org/advisories/RUSTSEC-2026-0185.html

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-23 20:17

Updated : 2026-07-30 19:59

NVD link : CVE-2026-25800

Mitre link : CVE-2026-25800

CVE.ORG link : CVE-2026-25800

JSON object : View

Products Affected

No product.

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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