40 matches found
CVE-2026-88011
Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.56, and from 3.0.0 until 3.7.12, a client-supplied dot-form header such as X.Authenticated.User survives ForwardAuth replacement and underscoreHeadersStrategy because Go treats it as distinct from X-Authenticated-User...
PT-2026-89472
Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.56, and from 3.0.0 until 3.7.12, a client-supplied dot-form header such as X.Authenticated.User survives ForwardAuth replacement and underscoreHeadersStrategy because Go treats it as distinct from X-Authenticated-User...
puma_header_normalization-CVE-2024-45614
Puma Header normalization CVE-2024-45614 Verification advisory: https://github.com/puma/puma/security/advisories/GHSA-9hf4-67fc-4vf4 fix commit: https://github.com/puma/puma/commit/cac3fd18cf29ed43719ff5d52d9cfec215f0a043 Results Execution results of request.rb duplicate...
CVE-2026-84303
gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, the xDS RBAC HTTP filter in internal/xds/httpfilter/rbac/rbac.go does not lowercase header matcher names in normalizeHeaderMatcher even though incoming metadata keys are lowercase. A DENY policy using a mixed-case name such as...
CVE-2026-49332
A flaw was found in openshift/oauth-proxy. The proxy sets authenticated identity headers using only dash-variant keys X-Forwarded-User but does not strip underscore-variant keys XForwardedUser from incoming requests. WSGI and PHP frameworks normalize both variants to the same variable, allowing a...
CVE-2026-53540
A flaw was found in python-multipart where parseform did not validate the Content-Length header before using it to bound its chunked read of the request body. A negative Content-Length turns the bounded read into a read-until-EOF, loading the entire body into memory in a single operation instead ...
CVE-2026-52845
Caddy is an extensible server platform that uses TLS by default. Prior to 2.11.4, forwardauth copyheaders deletes the exact client-supplied identity header before copying the trusted value from the auth gateway. But when the request later goes through phpfastcgi, Caddy normalizes HTTP headers int...
DEBIAN-CVE-2026-52845
Caddy is an extensible server platform that uses TLS by default. Prior to 2.11.4, forwardauth copyheaders deletes the exact client-supplied identity header before copying the trusted value from the auth gateway. But when the request later goes through phpfastcgi, Caddy normalizes HTTP headers int...
CVE-2026-52845
Summary (CVE-2026-52845): Caddy 2.11.x contains a bypass in forward_auth copy_headers where, prior to 2.11.4, the exact client-supplied header was deleted but HTTP header names are later normalized to CGI variables, allowing an underscore alias to collide with a trusted header in FastCGI backends...
CVE-2026-52845 Caddy: FastCGI header normalization bypass in `forward_auth copy_headers`
Caddy is an extensible server platform that uses TLS by default. Prior to 2.11.4, forwardauth copyheaders deletes the exact client-supplied identity header before copying the trusted value from the auth gateway. But when the request later goes through phpfastcgi, Caddy normalizes HTTP headers int...
CVE-2026-52845 Caddy: FastCGI header normalization bypass in `forward_auth copy_headers`
Caddy is an extensible server platform that uses TLS by default. Prior to 2.11.4, forwardauth copyheaders deletes the exact client-supplied identity header before copying the trusted value from the auth gateway. But when the request later goes through phpfastcgi, Caddy normalizes HTTP headers int...
Caddy: FastCGI header normalization bypass in `forward_auth copy_headers`
Summary forwardauth copyheaders deletes the exact client-supplied identity header before copying the trusted value from the auth gateway. But when the request later goes through phpfastcgi, Caddy normalizes HTTP headers into CGI variables by replacing - with . This lets a client send an underscor...
PT-2026-50161
Name of the Vulnerable Software and Affected Versions Caddy versions prior to 2.11.4 Description An issue exists where forward auth copy headers deletes client-supplied identity headers before copying trusted values from an authentication gateway. However, when requests are processed via php...
CVE-2026-48595
Improper Handling of Case Sensitivity vulnerability in elixir-tesla tesla allows credential leakage to a third-party origin on cross-origin redirects. Tesla.Middleware.FollowRedirects strips security-sensitive headers on cross-origin redirects using a case-sensitive string comparison against a...
EEF-CVE-2026-48595 Authorization header leaks to third-party origin on cross-origin redirect in Tesla.Middleware.FollowRedirects
Summary Improper Handling of Case Sensitivity vulnerability in elixir-tesla tesla allows credential leakage to a third-party origin on cross-origin redirects. Tesla.Middleware.FollowRedirects strips security-sensitive headers on cross-origin redirects using a case-sensitive string comparison...
Server-side Request Forgery (SSRF)
Overview org.webjars.npm:axios is a promise-based HTTP client for the browser and Node.js. Affected versions of this package are vulnerable to Server-side Request Forgery SSRF through the AxiosHeaders normalization path and shouldBypassProxy helper. An attacker can smuggle CRLF and other control...
Exploit for CVE-2026-40175
CVE-2026-40175 — Axios CRLF Injection / HTTP Request Smuggling...
Improper Input Validation
OAuth2-Proxy is vulnerable to improper input validation. The vulnerability is due to inconsistent normalization of underscores and dashes in X-Forwarded- headers, which allows an attacker to inject crafted header variants to bypass proxy filtering and potentially escalate privileges in upstream...
OAuth2-Proxy is vulnerable to header smuggling via underscore leading to potential privilege escalation
Impact All deployments of OAuth2 Proxy in front of applications that normalize underscores to dashes in HTTP headers e.g., WSGI-based frameworks such as Django, Flask, FastAPI, and PHP applications. Authenticated users can inject underscore variants of X-Forwarded- headers that bypass the proxy’s...
