Vulnerability in Apache Software Foundation Apache HttpComponents Core

[ Description ]Official description

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 an remote attacker to cause a denial of service through memory exhaustion by sending messages with excessive number of headers / excessive header length

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• NCSC-NL22 Oct 2026NCSC-2026-0448

  Vulnerabilities fixed in Oracle Fusion Middleware Translated from Dutch

  Probability/damage H/HCVE-2026-54513CVE-2026-56741CVE-2026-59649+191 more CVEs
• CERT-FR21 Oct 2026CERTFR-2026-AVI-1349

  Multiple vulnerabilities in Oracle Database Server Translated from French

  Multiple vulnerabilities have been discovered in Oracle Database Server. Some of them allow an attacker to cause remote arbitrary code execution, remote denial of service and a breach of data confidentiality.

  CVE-2026-91499CVE-2026-93565CVE-2026-93494+41 more CVEs
• BSI CERT-Bund20 Oct 2026WID-SEC-2026-4090

  Oracle Communications: Multiple vulnerabilities Translated from German

  Risk highCVE-2026-101763CVE-2026-58389CVE-2026-56740+85 more CVEs
• BSI CERT-Bund20 Oct 2026WID-SEC-2026-4078

  Oracle Fusion Middleware: Multiple vulnerabilities Translated from German

  CVE-2026-91212CVE-2023-43622CVE-2026-42779+191 more CVEs
• BSI CERT-Bund20 Oct 2026WID-SEC-2026-4061

  Oracle Database Server: Multiple vulnerabilities Translated from German

  CVE-2026-91615CVE-2026-59889CVE-2026-101510+10 more CVEs
• BSI CERT-Bund20 Oct 2026WID-SEC-2026-4056

  Atlassian products (Bamboo, Bitbucket, Confluence, Crucible, Fisheye and Jira): Multiple vulnerabilities Translated from German

  CVE-2026-13676CVE-2026-50750CVE-2026-53404+72 more CVEs

[ References ]References

• lists.apache.org/thread/zmxh1pl2zohov5ntdh4lt85gfrlchgpyvendor-advisory