🛡️ CVE-2026-58189 on Ubuntu — trafficserver

⚪ Unknown ✅ No Known Exploit OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

Apache Traffic Server allows redirect-limit bypass when plugins reset the retry counter, enabling SSRF amplification. 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.

Distribution advisory

This page covers CVE-2026-58189 as tracked by Ubuntu, for the package trafficserver. No fixed version has been recorded for this distribution yet.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

UBUNTU-CVE-2026-58189 is classified as CWE-918: Server-Side Request Forgery (SSRF). The server fetches a URL supplied by the caller, which can be pointed at internal systems it alone can reach.

Affected software

UBUNTU-CVE-2026-58189 is recorded against 1 package.

trafficserver

Timeline and source

Published on 29 July 2026 and last revised on 6 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
www.cve.org (Report)
lists.apache.org (Report)

Details

Severity Unknown

CVSS Score N/A

CVSS Vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2026-07-29

Updated 2026-08-11

Modified 2026-08-06

Fix URL N/A

Affected Packages

Software	From version	Fixed in
trafficserver	—	—

References

REPORT https://ubuntu.com/security/CVE-2026-58189

REPORT https://www.cve.org/CVERecord?id=CVE-2026-58189

REPORT https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d

🔗 NVD 🔗 Mitre

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