CVE-2026-111804 Apache Traffic Server - Use After Free

Apache Traffic Server 10.0.0 through 10.1.4 and 10.2.0 contains a use-after-free caused by improper handling in the experimental wasm plugin's transaction-close handler, letting attackers cause memory corruption, exploit requires triggering transaction close.

CVSS base score 8.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Use After Free
Impact
Use After Free, Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Published
21 October 2026
Updated
22 October 2026
Weakness
CWE-416

Vendor fix

Upgrade to versions 10.1.5 or 10.2.1.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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