CVE-2026-58186

HIGH CVSS 4.0: 8.2 EPSS 0.37%
Updated Jul 29, 2026
Apache
Parameter Value
CVSS 8.2 (HIGH)
Affected Versions 8.0.0 — 8.1.9
Fixed In 9.2.15
Type CWE-20 (Improper Input Validation)
Vendor Apache
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v4.0