CVE-2026-112381
Apache Traffic Server: Nullptr dereference in net_write_io on a POST half-close with chunked response
CVSS Score
5.9
EPSS Score
0.0%
EPSS Percentile
0th
Apache Traffic Server can crash with a null pointer dereference when a client POST request is torn down via half-close while a chunked origin response is being reparsed from a reentrant write-ready callback, a timing-dependent race introduced by the CVE-2021-32564 flow-control backports. This issue affects Apache Traffic Server: 9.2.15, 10.1.4, 10.2.0. Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.
| CWE | CWE-476 |
| Vendor | apache software foundation |
| Product | apache traffic server |
| Published | Oct 21, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Apache Software Foundation / Apache Traffic Server
9.2.15 10.1.4 10.2.0
References
Credits
🔍 Masaori Koshiba