CVE-2026-39858

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is a high severity authentication bypass vulnerability in Traefik's ForwardAuth and snippet-based authentication middleware. Traefik's forwarded-header sanitization logic targets only...

CVE-2026-39858 Traefik: Forwarded alias spoofing top pre-auth decision bypass

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is a high severity authentication bypass vulnerability in Traefik's ForwardAuth and snippet-based authentication middleware. Traefik's forwarded-header sanitization logic targets only...

CVE-2026-39858 Traefik: Forwarded alias spoofing top pre-auth decision bypass

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is a high severity authentication bypass vulnerability in Traefik's ForwardAuth and snippet-based authentication middleware. Traefik's forwarded-header sanitization logic targets only...

EUVD-2026-26427

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is a high severity authentication bypass vulnerability in Traefik's ForwardAuth and snippet-based authentication middleware. Traefik's forwarded-header sanitization logic targets only...

CVE-2026-39858

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is a high severity authentication bypass vulnerability in Traefik's ForwardAuth and snippet-based authentication middleware. Traefik's forwarded-header sanitization logic targets only...

CVE-2026-39858

Traefik vulnerable to a high-severity authentication bypass via forwarded alias headers. The sanitization logic targets only canonical headers (e.g., X-Forwarded-Proto) and does not strip or normalize alias forms using underscores (e.g., X_Forwarded_Proto). When an auth backend normalizes undersc...

EUVD-2026-26426

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is an authentication bypass vulnerability in Traefik's ForwardAuth middleware when trustForwardHeader=false is configured and Traefik is deployed behind a trusted upstream proxy. This issu...

GHSA-56C3-VFP2-5QQJ n8n-mcp's IPv4-mapped IPv6 addresses bypass SSRF protection in validateUrlSync(), enabling full SSRF for SDK embedders

Impact In the SDK embedder path N8NDocumentationMCPServer constructor, getN8nApiClient, and validateInstanceContext, the synchronous URL validator in SSRFProtection.validateUrlSync had no IPv6 checks. IPv4-mapped IPv6 addresses such as http://::ffff:169.254.169.254 bypassed the cloud-metadata,...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the FilterDeadline function. An attacker can force the application to make arbitrary outbound HTTP POST requests to internal or external destinations by supplying a crafted URL in the...

Gotenberg Vulnerable to Unauthenticated SSRF via Unfiltered Webhook URL

CVE Report — Unauthenticated SSRF via Unfiltered Webhook URL in Gotenberg Severity | Field | Value | |-----------|----------------------------------------| | CVSS v3.1 | 8.6 High | | Vector | AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N | | CWE | CWE-918 — Server-Side Request Forgery | | Auth | None |...

GHSA-5VH4-RGV7-P9G4 Gotenberg Vulnerable to Unauthenticated SSRF via Unfiltered Webhook URL

CVE Report — Unauthenticated SSRF via Unfiltered Webhook URL in Gotenberg Severity | Field | Value | |-----------|----------------------------------------| | CVSS v3.1 | 8.6 High | | Vector | AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N | | CWE | CWE-918 — Server-Side Request Forgery | | Auth | None |...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the FilterDeadline function. An attacker can force the application to make arbitrary outbound HTTP POST requests to internal or external destinations by supplying a crafted URL in the...

CVE-2026-40453

A flaw was found in Apache Camel. A remote attacker with Java Message Service JMS producer access could exploit a vulnerability in how certain header filter strategies process case-variant internal headers. This discrepancy, where filtering is case-sensitive but header processing is not, allows f...

CLSA-2026-1777563191 tar: Fix of CVE-2019-9923

CVE-2019-9923: fix NULL pointer dereference in paxdecodeheader on malformed PAX extended headers...

tomcat: Client certificate verification bypass due to virtual host mapping

A certificate validation flaw has been found in Apache Tomcat. omcat did not validate that the host name provided via the SNI extension was the same as the host name provided in the HTTP host header field. If Tomcat was configured with more than one virtual host and the TLS configuration for one ...

CVE-2026-6276

A flaw was found in libcurl. This vulnerability allows for information disclosure when a custom Host: header is used in an initial HTTP request, and a subsequent request reuses the same connection without specifying a new Host: header. This can lead to libcurl incorrectly sending cookies intended...

CVE-2026-7381

A flaw was found in Plack::Middleware::XSendfile. A remote attacker can exploit this vulnerability by manipulating HTTP headers, specifically X-Sendfile-Type and X-Accel-Mapping, when the application is deployed behind an nginx reverse proxy. This client-controlled path rewriting could allow the...

JLSEC-2026-360

readheadertga in gdtga.c in the GD Graphics Library aka LibGD through 2.3.2 allows remote attackers to cause a denial of service out-of-bounds read via a crafted TGA file...

metasploit-web-scanner-module

MSF Web Vulnerability Scanner Advanced Advanced Metasploit au...

pyjwt: PyJWT accepts unknown `crit` header extensions (RFC 7515 §4.1.11 MUST violation)

A missing verification step has been discovered in PyJWT. PyJWT does not validate the crit Critical Header Parameter defined in RFC 7515 §4.1.11. When a JWS token contains a crit array listing extensions that PyJWT does not understand, the library accepts the token instead of rejecting it. This...