CVE-2026-58178: traffic server — Fix

Description

The Apache Traffic Server ESI plugin can recurse without bound and fetch attacker-controlled URLs. 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.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploit Prediction

0.0064

Probability of exploitation

0.47%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-674 CWE-674

Affected Products

Vendor	Product	Versions
apache	traffic_server	8.0.0 — 8.1.9
apache	traffic_server	9.0.0 — 9.2.15
apache	traffic_server	10.0.0 — 10.1.4

References

Advisories & Patches

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

Frequently Asked Questions

What is CVE-2026-58178? +

The Apache Traffic Server ESI plugin can recurse without bound and fetch attacker-controlled URLs. 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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-58178? +

CVE-2026-58178 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0064, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-58178? +

CVE-2026-58178 affects products from apache, specifically: traffic_server. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-58178? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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