Your RSA-2048 keys break in 2030. Find every one of them before attackers do.

CVE-2026-58184

HIGH

CVE-2026-58184 is a high-severity (CVSS 8.2) Out-of-bounds Write vulnerability in apache traffic server. O3 Security detects and blocks CVE-2026-58184 exploitation at runtime via eBPF exploit-chain detection and L7 egress monitoring, even on unpatched systems.

The Apache Traffic Server header_rewrite plugin can crash or corrupt memory during cookie operations and CIDR condition matching. This issue affects Apache Traffic Server: from 8.0.0…

Published
Jul 29, 2026
Updated
Jul 31, 2026
Affected
0 pkgs
Patched
None yet
Exploits
None indexed

Description

The Apache Traffic Server header_rewrite plugin can crash or corrupt memory during cookie operations and CIDR condition matching.

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.

Affected Products

1 product · 3 configurations
Application
traffic serverapache
≥ 10.0.0 && ≤ 8.1.9
range

Detection & mitigation playbook

Vendor / appliance
  1. Detect

    Inventory every apache traffic server deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.

  2. Fix

    Apply the apache traffic server security patch or hotfix for CVE-2026-58184 on the affected version, following the vendor advisory for your exact build.

  3. Workarounds

    Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.

  4. How O3 protects you

    O3 detects and blocks CVE-2026-58184 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Tailored to CVE-2026-58184. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

The Apache Traffic Server header_rewrite plugin can crash or corrupt memory during cookie operations and CIDR condition matching. 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.
O3 Security · Runtime Protection

Is CVE-2026-58184 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2026-58184 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.