CVE-2026-63385

Libevent versions before 2.1.13 and 2.2.2-alpha contain two HTTP parsing flaws in http.c: evhttp_decode_uri_internal decodes %00 into literal NUL bytes, truncating paths to bypass validation; evhttp_header_is_valid_value accepts obsolete line folding with CRLF, enabling header injection and acces...

CVE-2026-63385

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has two HTTP parsing weaknesses in http.c. evhttpdecodeuriinternal decodes percent-encoded %00 bytes into literal NUL characters, which can cause downstream C string operations to truncate a path and bypass...

CVE-2026-63385 Libevent: HTTP header handling bugs create risk of access control bypass.

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has two HTTP parsing weaknesses in http.c. evhttpdecodeuriinternal decodes percent-encoded %00 bytes into literal NUL characters, which can cause downstream C string operations to truncate a path and bypass...

CVE-2026-63379

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent processes chunked HTTP trailers in http.c through evhttpreadtrailer and merges them into request headers. The fix introduces evhttpparseheadersimpl and a temporary trailer header list. An unauthenticated remote...

CVE-2026-63379 Libevent: HTTP Header smuggling

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent processes chunked HTTP trailers in http.c through evhttpreadtrailer and merges them into request headers. The fix introduces evhttpparseheadersimpl and a temporary trailer header list. An unauthenticated remote...

CVE-2026-63379 Libevent: HTTP Header smuggling

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent processes chunked HTTP trailers in http.c through evhttpreadtrailer and merges them into request headers. The fix introduces evhttpparseheadersimpl and a temporary trailer header list. An unauthenticated remote...

EUVD-2026-63562

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent processes chunked HTTP trailers in http.c through evhttpreadtrailer and merges them into request headers. The fix introduces evhttpparseheadersimpl and a temporary trailer header list. An unauthenticated remote...

CVE-2026-63379

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent processes chunked HTTP trailers in http.c through evhttpreadtrailer and merges them into request headers. The fix introduces evhttpparseheadersimpl and a temporary trailer header list. An unauthenticated remote...

CVE-2026-63379 Libevent: HTTP Header smuggling

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent processes chunked HTTP trailers in http.c through evhttpreadtrailer and merges them into request headers. The fix introduces evhttpparseheadersimpl and a temporary trailer header list. An unauthenticated remote...

CVE-2026-63379

CVE-2026-63379 affects Libevent , an event notification library, in its HTTP trailer handling within http.c. The function evhttp_read_trailer merges chunked HTTP trailers directly into request headers (req->input_headers) rather than parsing them separately. An unauthenticated remote attacker ...

CVE-2026-63382 libevent evhttp: Multiple HTTP Parser Bugs Enable Request Smuggling

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. evhttpfindheader can select only the first...

CVE-2026-73258

In Mongoose prior to 7.22, mg_http_next_multipart() in src/http.c uses an incorrect AND condition when scanning for CRLF terminators in multipart input. A lone carriage return or line feed causes premature truncation of headers, filenames, or boundaries, allowing an attacker to present a misleadi...

EUVD-2026-63495

Mongoose is an embedded web server and network library. Prior to 7.22, a remote attacker can place a lone carriage return or line feed in multipart input processed by mghttpnextmultipart in src/http.c. The loops comparing sb and sb + 1, and sh2 and sh2 + 1, use an incorrect AND condition and stop...

CVE-2026-73258 Mongoose: Multipart boundary/header scan logic error in mg_http_next_multipart

Mongoose is an embedded web server and network library. Prior to 7.22, a remote attacker can place a lone carriage return or line feed in multipart input processed by mghttpnextmultipart in src/http.c. The loops comparing sb and sb + 1, and sh2 and sh2 + 1, use an incorrect AND condition and stop...

AZL-97575 CVE-2026-54770 affecting package python-webob for versions less than 1.8.11-1

WebOb provides objects for HTTP requests and responses. Prior to 1.8.11, Response.makelocationabsolute in src/webob/response.py checks a Location value for a URI scheme or leading double slash before urllib.parse.urljoin strips leading C0 control characters and spaces. An attacker-controlled valu...

CVE-2026-54770 WebOb: Open redirect in Location header normalization via leading C0 control / space characters

WebOb provides objects for HTTP requests and responses. Prior to 1.8.11, Response.makelocationabsolute in src/webob/response.py checks a Location value for a URI scheme or leading double slash before urllib.parse.urljoin strips leading C0 control characters and spaces. An attacker-controlled valu...

CVE-2026-54770 WebOb: Open redirect in Location header normalization via leading C0 control / space characters

WebOb provides objects for HTTP requests and responses. Prior to 1.8.11, Response.makelocationabsolute in src/webob/response.py checks a Location value for a URI scheme or leading double slash before urllib.parse.urljoin strips leading C0 control characters and spaces. An attacker-controlled valu...

CVE-2026-54770 WebOb: Open redirect in Location header normalization via leading C0 control / space characters

WebOb provides objects for HTTP requests and responses. Prior to 1.8.11, Response.makelocationabsolute in src/webob/response.py checks a Location value for a URI scheme or leading double slash before urllib.parse.urljoin strips leading C0 control characters and spaces. An attacker-controlled valu...

CVE-2026-54770

In WebOb before 1.8.11, Response._make_location_absolute() in src/webob/response.py checks a Location value for a URI scheme or leading double slash before urllib.parse.urljoin() strips leading C0 control characters and spaces. An attacker-controlled value such as a space followed by a protocol-r...

CVE-2026-63481

Hurl (a command-line tool for running and testing HTTP requests from plain-text files) is vulnerable to cookie leakage on cross-host redirects in versions 8.0.1 and earlier . The redirect handler in packages/hurl/src/http/client.rs correctly strips Authorization and Cookie headers when the redire...