No analysis available yet.
No remediation available yet.
Tracking
Sign in to view the affected projects.
No advisories yet.
Thu, 20 Aug 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Thu, 20 Aug 2026 18:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, the libevent evhttp parser in http.c inconsistently handles duplicate Transfer-Encoding headers, comma-separated Transfer-Encoding values, and bare line feeds in chunked framing. evhttp_find_header can select only the first header, evhttp_check_transfer_encoding_ was absent so the previous whole-string comparison fails to recognize valid lists ending in chunked, and evhttp_handle_chunked_read uses EVBUFFER_EOL_CRLF rather than EVBUFFER_EOL_CRLF_STRICT, accepting bare LF chunk terminators. When libevent is deployed behind a proxy that frames the same request differently, an unauthenticated remote attacker can desynchronize request boundaries and smuggle a second request, potentially bypassing access controls or poisoning caches. This issue is fixed in versions 2.1.13 and 2.2.2-alpha. | |
| Title | libevent evhttp: Multiple HTTP Parser Bugs Enable Request Smuggling | |
| Weaknesses | CWE-444 | |
| References |
|
|
| Metrics |
cvssV4_0
|
Subscriptions
No data.
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-08-20T19:33:50.217Z
Reserved: 2026-07-16T17:39:30.171Z
Link: CVE-2026-63382
Updated: 2026-08-20T19:33:25.067Z
Status : Received
Published: 2026-08-20T18:16:35.700
Modified: 2026-08-20T20:17:45.063
Link: CVE-2026-63382
No data.
OpenCVE Enrichment
No data.
-
CWE-444
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')