What’s Vulnerable › Vulnerabilities
CVE-2026-112381: Apache Traffic Server: Nullptr dereference in net_write_io on a POST half-close with chunked response
- Severity: medium (CVSS 5.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-21 · updated 2026-10-23
- Weakness: CWE-476
Description
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.
Affected products
- Apache Software Foundation Apache Traffic Server: 9.2.15, 10.1.4, 10.2.0
References
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