CVE-2026-58159
published 2026-07-29CVE-2026-58159: 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…
PriorityP354high8.2CVSS 3.1
AVNACLPRNUINSUCNIHAL
EPSS
0.56%
44.9th percentile
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 8.1.11, 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
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apache | traffic_server | >= 10.0.0 < 10.1.4 | 10.1.4 |
| apache | traffic_server | 8.0.0 – 8.1.9 | — |
| apache | traffic_server | >= 9.0.0 < 9.2.15 | 9.2.15 |
| apache_software_foundation | apache_traffic_server | 10.0.0 – 10.1.3 | — |
| apache_software_foundation | apache_traffic_server | 8.0.0 – 8.1.11 | — |
| apache_software_foundation | apache_traffic_server | 9.0.0 – 9.2.14 | — |
CVSS provenance
nvdv3.18.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
nvdv4.07.0HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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Bugzilla
CVE-2026-58159 trafficserver: listener and ACL handling allow access-control bypass [fedora-all]
bugzilla·2026-07-29·CVSS 8.2
CVE-2026-58159 [HIGH] CVE-2026-58159 trafficserver: listener and ACL handling allow access-control bypass [fedora-all]
CVE-2026-58159 trafficserver: listener and ACL handling allow access-control bypass [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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.
Discussion:
FEDORA-2026-5bec7441bb (trafficserver-10.1.4-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-5b
Bugzilla
CVE-2026-58159 trafficserver: listener and ACL handling allow access-control bypass [epel-all]
bugzilla·2026-07-29·CVSS 8.2
CVE-2026-58159 [HIGH] CVE-2026-58159 trafficserver: listener and ACL handling allow access-control bypass [epel-all]
CVE-2026-58159 trafficserver: listener and ACL handling allow access-control bypass [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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.
Discussion:
FEDORA-EPEL-2026-943e511d48 (trafficserver-9.2.15-1.el9) has been submitted as an update to Fedora EPEL 9.
https://bodhi.fedoraproject.org/updates/FEDORA-E
Bugzilla
CVE-2026-58159 Apache Traffic Server: listener and ACL handling allow access-control bypass
bugzilla·2026-07-29·CVSS 8.2
CVE-2026-58159 [HIGH] CVE-2026-58159 Apache Traffic Server: listener and ACL handling allow access-control bypass
CVE-2026-58159 Apache Traffic Server: listener and ACL handling allow access-control bypass
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.
2026-07-29
Published