EUVD Vulnerability Catalog

EUVD-2026-107493

Severity: CRITICAL Base Score: 9.2 CVSS Version: 4.0

Vulnerability Description

Apache Traffic Server forwarded a malformed 302 response that should have been rejected as a parse error, because the Transfer-Encoding: chunked carve-out bypassed the rejection path. A response that two peers can read differently is then stored and served, allowing cache poisoning and response-framing desync. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0. Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.

CVSS Vector Analysis

Below is the complete, human-readable breakdown of the CVSS metric string: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:L/SI:H/SA:N

▪ Attack Vector (AV): Network

▪ Attack Complexity (AC): Low

▪ Attack Requirements (AT): None

▪ Privileges Required (PR): None

▪ User Interaction (UI): None

▪ Vulnerability Confidentiality Impact (VC): None

▪ Vulnerability Integrity Impact (VI): High

▪ Vulnerability Availability Impact (VA): None

▪ Subsequent Confidentiality Impact (SC): Low

▪ Subsequent Integrity Impact (SI): High

▪ Subsequent Availability Impact (SA): None

Affected Vendors & Systems

Vendor Apache Software Foundation

References & Advisory Links

https://lists.apache.org/thread/r95dq29ywcd1f4x30snxlqmb12z4s4kc

Metadata Profile

Database Authority

European Union Agency for Cybersecurity (ENISA) EUVD

Assigner

apache

EPSS Probability

Known Aliases

CVE-2026-111816

Published On

2026-10-21

Last Updated

2026-10-21