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CVE-2025-12642

HTTP Header Smuggling via Trailer Merge PUBLISHED

Description (CNA)

lighttpd1.4.80 incorrectly merged trailer fields into headers after http request parsing. This behavior can be exploited to conduct HTTP Header Smuggling attacks. Successful exploitation may allow an attacker to: * Bypass access control rules * Inject unsafe input into backend logic that trusts request headers * Execute HTTP Request Smuggling attacks under some conditions This issue affects lighttpd1.4.80

Affected (CNA)

Vendor / productVersions
lighttpd / lighttpdaffected 1.4.80 before 1.4.81

CWE

CWE-444

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.