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
Metrics
Affected Vendors & Products
No advisories yet.
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Tue, 04 Nov 2025 16:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Lighttpd
Lighttpd lighttpd |
|
| Vendors & Products |
Lighttpd
Lighttpd lighttpd |
Mon, 03 Nov 2025 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Mon, 03 Nov 2025 19:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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 | |
| Title | HTTP Header Smuggling via Trailer Merge | |
| Weaknesses | CWE-444 | |
| References |
| |
| Metrics |
cvssV4_0
|
Status: PUBLISHED
Assigner: Toreon
Published:
Updated: 2025-11-03T19:44:09.174Z
Reserved: 2025-11-03T19:34:17.666Z
Link: CVE-2025-12642
Updated: 2025-11-03T19:43:58.912Z
Status : Awaiting Analysis
Published: 2025-11-03T20:17:06.410
Modified: 2025-11-04T15:41:31.450
Link: CVE-2025-12642
No data.
OpenCVE Enrichment
Updated: 2025-11-04T16:34:48Z