Vulnerability record · CVE-2026-65324 · published 29 July 2026

CVE-2026-65324: Apache traffic server uncontrolled resource consumption vulnerability

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.

8.2 CVSS 4.0 High EPSS 0.66% · top 50.3% CWE-400 · Uncontrolled resource consumption

8.2CVSS 4.0 base score

0.66%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

1References

3 Aug 2026Last modified by NVD

Description

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Traffic Server Apache

References

Link	Tags
https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d	Vendor AdvisoryMailing List

Track CVE-2026-65324 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2023-44487HTTP/2 Rapid Reset stream cancellation denial of serviceThe HTTP/2 protocol permits a client to cancel many streams quickly, and the server's handling of those resets consumes disproportionate resources. T…KEVEPSS 100%analysed10 Oct 2023 10.0CVE-2014-3525Apache traffic server vulnerabilityUnspecified vulnerability in Apache Traffic Server 3.x through 3.2.5, 4.x before 4.2.1.1, and 5.x before 5.0.1 has unknown impact and attack vectors,…EPSS 4.5%22 Aug 2014 9.8CVE-2021-43082Apache traffic server classic buffer overflow vulnerabilityBuffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in the stats-over-http plugin of Apache Traffic Server allows an…EPSS 2.4%3 Nov 2021 9.8CVE-2021-35474Apache traffic server stack-based buffer overflow vulnerabilityStack-based Buffer Overflow vulnerability in cachekey plugin of Apache Traffic Server. This issue affects Apache Traffic Server 7.0.0 to 7.1.12, 8.0.…EPSS 2.7%30 Jun 2021 9.8CVE-2019-17559Apache traffic server http request smuggling vulnerabilityThere is a vulnerability in Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.8, and 8.0.0 to 8.0.5 with a smuggling attack and scheme parsing. Upgr…EPSS 3.2%23 Mar 2020 9.8CVE-2019-17565Apache traffic server http request smuggling vulnerabilityThere is a vulnerability in Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.8, and 8.0.0 to 8.0.5 with a smuggling attack and chunked encoding. Up…EPSS 3.2%23 Mar 2020 9.8CVE-2020-1944Apache traffic server http request smuggling vulnerabilityThere is a vulnerability in Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.8, and 8.0.0 to 8.0.5 with a smuggling attack and Transfer-Encoding an…EPSS 2.7%23 Mar 2020 9.8CVE-2014-3624Apache traffic server improper access control vulnerabilityApache Traffic Server 5.1.x before 5.1.1 allows remote attackers to bypass access restrictions by leveraging failure to properly tunnel remap request…EPSS 3.8%30 Oct 2017

Source: NIST National Vulnerability Database (record CVE-2026-65324), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.