CVE-2026-73512

Public on 2026-09-08

Modified on 2026-09-08

Description

Fixed a use-after-free in the QUIC HTTP datagram handler where late HTTP/3 datagrams could reference a stream decoder that was already destroyed or replaced.

Severity

Important

See what this means

CVSS v3 Base Score

7.5

See breakdown

Affected Packages

Platform	Package	Release Date	Advisory	Status
Amazon Linux 2 - Ecs Extra	ecs-service-connect-agent			Pending Fix
Amazon Linux 2023	ecs-service-connect-agent			Pending Fix

CVSS Scores

	Score Type	Score	Vector
Amazon Linux	CVSSv3	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

FAQs regarding Amazon Linux ALAS/CVE Severity Red Hat: CVE-2026-73512 Mitre: CVE-2026-73512