CVE-2026-58159
Apache Traffic Server: Listener and ACL handling allow access-control bypass
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-863 |
| Vendor | apache software foundation |
| Product | apache traffic server |
| Published | Jul 29, 2026 |
Stay Ahead of the Next One
Get instant alerts for apache software foundation apache traffic server
Be the first to know when new high vulnerabilities affecting apache software foundation apache traffic server are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
Low
Affected Versions
Apache Software Foundation / Apache Traffic Server
8.0.0 ≤ 8.1.9 9.0.0 ≤ 9.2.14 10.0.0 ≤ 10.1.3
References
Credits
🔍 Apache Community 🔍 Omkhar Arasaratnam