CVE-2026-58159: CWE-863 Incorrect Authorization in Apache Software Foundation Apache Traffic Server
Apache Traffic Server can bypass IP access controls on UDS listeners and through ACL matching errors. 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-2026-58159 is an authorization bypass vulnerability (CWE-863) in Apache Traffic Server. The flaw allows bypassing IP access controls on Unix Domain Socket (UDS) listeners and through errors in Access Control List (ACL) matching. Affected versions include 8.0.0 through 8.1.9, 9.0.0 through 9.2.14, and 10.0.0 through 10.1.3. The vulnerability has a CVSS 3.1 base score of 8.2, indicating high severity with network attack vector, low attack complexity, no privileges or user interaction required, unchanged scope, no confidentiality impact, high integrity impact, and low availability impact. The vendor recommends upgrading to 9.2.15 or 10.1.4 to fix the issue.
Potential Impact
Successful exploitation allows an attacker to bypass IP-based access controls on UDS listeners and ACL matching, potentially leading to unauthorized actions that compromise the integrity of the system. There is no confidentiality impact, but integrity is rated high and availability low. This could allow unauthorized modification or manipulation of traffic server behavior.
Mitigation Recommendations
Users should upgrade Apache Traffic Server to version 9.2.15 or 10.1.4, which contain fixes for this vulnerability. Patch status is confirmed by the vendor's recommended upgrade versions. No other mitigation or temporary workaround is specified.
CVE-2026-58159: CWE-863 Incorrect Authorization in Apache Software Foundation Apache Traffic Server
Description
Apache Traffic Server can bypass IP access controls on UDS listeners and through ACL matching errors. 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 8.2high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-58159 is an authorization bypass vulnerability (CWE-863) in Apache Traffic Server. The flaw allows bypassing IP access controls on Unix Domain Socket (UDS) listeners and through errors in Access Control List (ACL) matching. Affected versions include 8.0.0 through 8.1.9, 9.0.0 through 9.2.14, and 10.0.0 through 10.1.3. The vulnerability has a CVSS 3.1 base score of 8.2, indicating high severity with network attack vector, low attack complexity, no privileges or user interaction required, unchanged scope, no confidentiality impact, high integrity impact, and low availability impact. The vendor recommends upgrading to 9.2.15 or 10.1.4 to fix the issue.
Potential Impact
Successful exploitation allows an attacker to bypass IP-based access controls on UDS listeners and ACL matching, potentially leading to unauthorized actions that compromise the integrity of the system. There is no confidentiality impact, but integrity is rated high and availability low. This could allow unauthorized modification or manipulation of traffic server behavior.
Mitigation Recommendations
Users should upgrade Apache Traffic Server to version 9.2.15 or 10.1.4, which contain fixes for this vulnerability. Patch status is confirmed by the vendor's recommended upgrade versions. No other mitigation or temporary workaround is specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-06-29T15:48:48.053Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a69c9f29c2644c7f8487e44
Added to database: 07/29/2026, 09:37:54 UTC
Last enriched: 07/29/2026, 10:26:02 UTC
Last updated: 07/30/2026, 01:33:55 UTC
Views: 10
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