CVE-2026-58186

Apache Traffic Server: webp_transform plugin decodes unsafely and mislabels degraded responses

Published: Jul 29, 2026Updated: Jul 31, 2026 Sources: CVE List NVDCWE-20

7.5HIGH

Description

The Apache Traffic Server webp_transform plugin can decode unsafely and serve mislabeled, cacheable responses. 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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-20

Affected Products

apache

oss-project·USaka apache http server, apache httpd

traffic serverOn-premWeb App

Web & CMS Plugins

Apache Software Foundation

oss-project·USaka apache foundation

Apache Traffic ServerOn-premNetwork Device

Networking Infrastructure / load-balancer-proxy

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Initial Access

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References

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

lists.apache.org

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