CVE-2026-65324: CWE-400 Uncontrolled Resource Consumption in Apache Software Foundation Apache Traffic Server
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.
AI Analysis
Technical Summary
CVE-2026-65324 is a resource exhaustion vulnerability in Apache Traffic Server caused by dropping the per-stream buffer cap when dechunking HTTP/2 or HTTP/3 responses. This flaw permits a slow client to consume excessive server memory, potentially causing denial of service. The vulnerability affects Apache Traffic Server versions from 8.0.0 through 8.1.9, 9.0.0 through 9.2.14, and 10.0.0 through 10.1.3. The issue is fixed in versions 9.2.15 and 10.1.4.
Potential Impact
An attacker can exploit this vulnerability by sending specially crafted HTTP/2 or HTTP/3 responses that cause the server to drop the per-stream buffer cap during dechunking, leading to uncontrolled memory consumption. This can result in denial of service due to resource exhaustion. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
Users should upgrade Apache Traffic Server to version 9.2.15 or 10.1.4 or later, where this vulnerability is fixed. Patch status is confirmed by the vendor advisory recommending these versions. No other mitigations are specified.
CVE-2026-65324: CWE-400 Uncontrolled Resource Consumption in Apache Software Foundation Apache Traffic Server
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.
CVSS v3.1
Score 7.5high
Affected software
Apache Software Foundation
Apache Traffic Server
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-65324 is a resource exhaustion vulnerability in Apache Traffic Server caused by dropping the per-stream buffer cap when dechunking HTTP/2 or HTTP/3 responses. This flaw permits a slow client to consume excessive server memory, potentially causing denial of service. The vulnerability affects Apache Traffic Server versions from 8.0.0 through 8.1.9, 9.0.0 through 9.2.14, and 10.0.0 through 10.1.3. The issue is fixed in versions 9.2.15 and 10.1.4.
Potential Impact
An attacker can exploit this vulnerability by sending specially crafted HTTP/2 or HTTP/3 responses that cause the server to drop the per-stream buffer cap during dechunking, leading to uncontrolled memory consumption. This can result in denial of service due to resource exhaustion. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
Users should upgrade Apache Traffic Server to version 9.2.15 or 10.1.4 or later, where this vulnerability is fixed. Patch status is confirmed by the vendor advisory recommending these versions. No other mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-07-21T20:59:11.713Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a69bbd69c2644c7f835ad35
Added to database: 07/29/2026, 08:37:42 UTC
Last enriched: 08/06/2026, 19:42:43 UTC
Last updated: 09/12/2026, 22:01:35 UTC
Views: 64
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