Is CVE-2026-58187 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-58187?

CVE-2026-58187 has a CVSS v3 severity of LOW (3.7).

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CVE-2026-58187

Description

The Apache Traffic Server multiplexer plugin overruns its chunk-decode buffer on upstream input, enabling denial of service. 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.