CVE-2026-65324

HIGH

Apache Traffic Server: HTTP/2 and HTTP/3 dechunking removes per-stream buffer cap, allowing memory exhaustion

Title source: cna
STIX 2.1

Description

Apache Traffic Server drops the per-stream buffer cap when dechunking HTTP/2 or HTTP/3 responses, letting a slow client exhaust server memory. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

References (1)

Core 1
Core References

Scores

CVSS v3 7.5
EPSS 0.0032
EPSS Percentile 24.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-400
Status published
Products (3)
Apache Software Foundation/Apache Traffic Server 10.0.0 - 10.1.3
Apache Software Foundation/Apache Traffic Server 8.0.0 - 8.1.9
Apache Software Foundation/Apache Traffic Server 9.0.0 - 9.2.14
Published Jul 29, 2026
Tracked Since Jul 29, 2026