HIGH 7.5
GHSA-hf6x-8p5f-cgmf
Apache HttpComponents Core HTTP/1 header parsing can cause memory-exhaustion denial of service
Quick fix
GHSA-hf6x-8p5f-cgmf — org.apache.httpcomponents.core5:httpcore5: upgrade to the fixed version with the command below.
# pom.xml: bump <version>5.4.3</version> for org.apache.httpcomponents.core5:httpcore5Details
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
Are you affected?
Enter the version of the package you're using.
Affected packages
Maven / org.apache.httpcomponents.core5:httpcore5
Introduced in:
0 Fixed in: 5.4.3 Fix
# pom.xml: bump <version>5.4.3</version> for org.apache.httpcomponents.core5:httpcore5 Maven / org.apache.httpcomponents.core5:httpcore5
Introduced in:
5.5-alpha1 Fixed in: 5.5-beta2 Fix
# pom.xml: bump <version>5.5-beta2</version> for org.apache.httpcomponents.core5:httpcore5 References
- https://nvd.nist.gov/vuln/detail/CVE-2026-54399 [ADVISORY]
- https://github.com/apache/httpcomponents-core/commit/d96a00fec9b2e19f8005e35681df5f6cd6e21a9e [WEB]
- https://github.com/apache/httpcomponents-core/commit/fdc53a32fe0fccf098cc67e71cd125e447c759ed [WEB]
- https://github.com/apache/httpcomponents-core [PACKAGE]
- https://lists.apache.org/thread/zmxh1pl2zohov5ntdh4lt85gfrlchgpy [WEB]
- http://www.openwall.com/lists/oss-security/2026/07/01/4 [WEB]