Memory Exhaustion Vulnerability in Apache Traffic Server Affecting Multiple Versions
CVE-2026-65324

8.2HIGH

Key Information:

Vendor

Apache
Status
Apache Traffic Server
Vendor
CVE Published:
29 July 2026

What is CVE-2026-65324?

A memory exhaustion vulnerability in Apache Traffic Server allows slow clients to exhaust server memory by dropping the per-stream buffer cap during the dechunking of HTTP/2 or HTTP/3 responses. This issue affects several versions of the software and can lead to significant service disruption. To mitigate the risk, users should upgrade to the fixed versions: 9.2.15 or 10.1.4.

Affected Version(s)

Apache Traffic Server 8.0.0 <= 8.1.9

Apache Traffic Server 9.0.0 <= 9.2.14

Apache Traffic Server 10.0.0 <= 10.1.3

References

https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnoky...
vendor-advisory

CVSS V4

Score:
8.2
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Apache Community
Omkhar Arasaratnam
.