Apache Traffic Server <10.1.4 vulnerable to REGEXP no anchor CVE-2026-22068
CVE-2026-22068 Published on July 29, 2026
Apache Traffic Server: Regex mappings match with malicious domain names
Regular Expression without Anchors vulnerability in Apache Traffic Server.
This issue affects Apache Traffic Server: from 10.0.X through 10.1.3, from 9.0.X through 9.2.14.
Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fixes the issue.
Vulnerability Analysis
CVE-2026-22068 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
Regular Expression without Anchors
The software uses a regular expression to perform neutralization, but the regular expression is not anchored and may allow malicious or malformed data to slip through. When performing tasks such as validating against a set of allowed inputs (allowlist), data is examined and possibly modified to ensure that it is well-formed and adheres to a list of safe values. If the regular expression is not anchored, malicious or malformed data may be included before or after any string matching the regular expression. The type of malicious data that is allowed will depend on the context of the application and which anchors are omitted from the regular expression.
Products Associated with CVE-2026-22068
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Affected Versions
Apache Software Foundation Apache Traffic Server:- Version 10.0.x, <= 10.1.3 is affected.
- Version 9.0.x, <= 9.2.14 is affected.