GHSA-9q54-f358-3fqf

Source

https://github.com/advisories/GHSA-9q54-f358-3fqf

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-9q54-f358-3fqf/GHSA-9q54-f358-3fqf.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-9q54-f358-3fqf

Aliases

CVE-2026-10740

Published

2026-08-14T21:44:19Z

Modified

2026-08-14T22:00:07Z

Severity

5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator

Summary

s2n-quic has excessive memory allocation

Details

s2n-quic is a Rust implementation of the QUIC protocol. An unauthenticated user can attempt to exhaust server memory on an s2n-quic endpoint by sending crafted CRYPTO frames with high offsets. The buffer used for processing CRYPTO frames does not enforce a maximum size. In the worst case, a single 1200-byte packet can cause approximately 9.4 MB of allocation. By repeatedly sending such packets, the resulting memory pressure could cause denial of service. No valid handshake is required.

Impacted versions: <= v1.81.0

Patches

This issue has been addressed in s2n-quic version v1.82.0. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.

Workarounds

There is no workaround that fully mitigates this issue. Upgrading to the patched version is the recommended remediation.

References

If there are any questions or comments about this advisory, contact AWS Security via the vulnerability reporting page or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue.

Database specific

{
    "cwe_ids":  [
        "CWE-770"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-08-14T21:44:19Z",
    "nvd_published_at":  "2026-06-10T19:16:32Z",
    "severity":  "MODERATE"
}

References

Affected packages

crates.io / s2n-quic

Package

Name: s2n-quic; View open source insights on deps.dev
Purl: pkg:cargo/s2n-quic

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1.82.0

Database specific

last_known_affected_version_range

"<= 1.81.0"

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-9q54-f358-3fqf/GHSA-9q54-f358-3fqf.json"