PT-2026-65764 · Apache · Apache Traffic Server

Omkhar Arasaratnam

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CVE-2026-58187

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Published

2026-07-29

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Updated

2026-08-07

CVSS v4.0

9.2

Critical

VectorAV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/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
Name of the Vulnerable Software and Affected Versions Apache Traffic Server versions 8.0.0 through 8.1.9 Apache Traffic Server versions 9.0.0 through 9.2.14 Apache Traffic Server versions 10.0.0 through 10.1.3
Description The multiplexer plugin overruns its chunk-decode buffer when processing upstream input, which can lead to a denial of service.
Recommendations Upgrade versions 8.0.0 through 9.2.14 to version 9.2.15. Upgrade versions 10.0.0 through 10.1.3 to version 10.1.4.

Exploit

Fix

DoS

Memory Corruption

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Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-58187
OESA-2026-3309
OESA-2026-3310
OESA-2026-3311

Affected Products

Apache Traffic Server