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Apache HTTP Server: Empty User-Agent Header Triggers Misconfigured Features
CVE-2025-20078
Summary
Apache HTTP Server may allow an attacker to exploit misconfigured features when an empty User-Agent header is received. This could potentially lead to unexpected behavior or security issues. Upgrade to a fixed version of Apache HTTP Server to prevent this issue.
Original title
Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority because it is Unused
Original description
Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority because it is Unused
Published: 13 Feb 2026 · Updated: 10 Mar 2026 · First seen: 6 Mar 2026