Vulnerability DatabaseCVE-2026-65100
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CVE-2026-65100
Published:July 29, 2026
Updated:August 05, 2026
Apache Traffic Server updates the HTTP/2 HPACK dynamic table before confirming the header block encoded successfully, so an encode failure leaves the encoder out of sync with the peer decoder and corrupts subsequent header blocks on the connection. 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.
Affected Packages
https://github.com/apache/trafficserver.git (GITHUB):
Affected version(s) >=9.0.0 <9.2.15
Fix Suggestion:
Update to version 9.2.15
https://github.com/apache/trafficserver.git (GITHUB):
Affected version(s) >=10.0.0 <10.1.4
Fix Suggestion:
Update to version 10.1.4
Related Resources (3)
https://nvd.nist.gov/vuln/detail/CVE-2026-65100
https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65100.json
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CVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.8
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
LOW
Weakness Type (CWE)
Incorrect Behavior Order
CWE-696
EPSS
Base Score:
0.45