GHSA-hf6x-8p5f-cgmf
Apache HttpComponents Core HTTP/1 header parsing can cause memory-exhaustion denial of service
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Maven | org.apache.httpcomponents.core5:httpcore5 | < 5.4.3 | 5.4.3 |
| Maven | org.apache.httpcomponents.core5:httpcore5 | >= 5.5-alpha1, < 5.5-beta2 | 5.5-beta2 |
Details
As written in the advisory (Markdown source, shown as plain text).
Uncontrolled Resource Consumption vulnerability in the HTTP/1.1 message parser in Apache HttpComponents Core (5.4.2 and earlier, 5.5-beta1 and earlier) allows a remote attacker to cause a denial of service through memory exhaustion by sending messages with excessive number of headers / excessive header length
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2026-54399
- https://github.com/apache/httpcomponents-core/commit/d96a00fec9b2e19f8005e35681df5f6cd6e21a9e
- https://github.com/apache/httpcomponents-core/commit/fdc53a32fe0fccf098cc67e71cd125e447c759ed
- https://github.com/apache/httpcomponents-core
- https://lists.apache.org/thread/zmxh1pl2zohov5ntdh4lt85gfrlchgpy
- http://www.openwall.com/lists/oss-security/2026/07/01/4