CVE-2026-91973

Vikunja before 2.6.0 contains an authentication bypass vulnerability in CalDAV BasicAuth endpoints that lack rate limiting protection. Remote unauthenticated attackers can issue unbounded credential-guessing requests against /dav, /.well-known, and /feeds routes to bypass the instance's...

EUVD-2026-78649

Vikunja before 2.6.0 contains an authentication bypass vulnerability in CalDAV BasicAuth endpoints that lack rate limiting protection. Remote unauthenticated attackers can issue unbounded credential-guessing requests against /dav, /.well-known, and /feeds routes to bypass the instance's...

CVE-2026-91973 Vikunja before 2.6.0 Authentication Bypass via CalDAV BasicAuth

Vikunja before 2.6.0 contains an authentication bypass vulnerability in CalDAV BasicAuth endpoints that lack rate limiting protection. Remote unauthenticated attackers can issue unbounded credential-guessing requests against /dav, /.well-known, and /feeds routes to bypass the instance's...

GO-2026-6204 Traefik: BasicAuth singleflight key collision allows authenticated identity spoofing in github.com/traefik/traefik

Traefik: BasicAuth singleflight key collision allows authenticated identity spoofing in github.com/traefik/traefik...

CVE-2026-71326

A flaw was found in Traefik. The BasicAuth middleware in Traefik reuses a key for concurrent password checks, which is generated by concatenating the password and secret without a delimiter. An attacker with a valid credential and the corresponding stored hash can exploit this vulnerability to...

Traefik: Incomplete fix for CVE-2026-33433 + CVE-2026-39858 cross-cohort: headerField underscore-variant identity spoofing in BasicAuth / DigestAuth / ForwardAuth

Summary There is a high severity vulnerability in Traefik's BasicAuth, DigestAuth, and ForwardAuth middlewares. The fix for CVE-2026-33433 stripped canonical-cased spoofed identity headers e.g. X-Auth-User before writing Traefik's own value, but did not account for underscore-variant header names...

GHSA-6765-C87H-8MRF Traefik: BasicAuth singleflight key collision allows authenticated identity spoofing

Summary There is a low severity vulnerability in Traefik's BasicAuth middleware. Concurrent password verifications are deduplicated through a singleflight group whose key was the delimiter-free concatenation of the submitted password and the stored secret, so a request carrying an unconfigured...

CVE-2026-71326

CVE-2026-71326 affects Traefik’s BasicAuth middleware (pkg/middlewares/auth/basic_auth.go) in 3.6.11–3.6.25 and 3.7.10. The vulnerability arises from deduplicating concurrent password checks using a singleflight key built from the delimiter-free concatenation of password and secret, enabling an a...

CVE-2026-71326

Traefik is an open source HTTP reverse proxy and load balancer. From 3.6.11 until 3.6.25 and 3.7.10, Traefik's BasicAuth middleware in pkg/middlewares/auth/basicauth.go deduplicates concurrent password checks with a singleflight key built from the delimiter-free concatenation of password and...

CVE-2026-71326 Traefik: BasicAuth singleflight key collision allows authenticated identity spoofing

Traefik is an open source HTTP reverse proxy and load balancer. From 3.6.11 until 3.6.25 and 3.7.10, Traefik's BasicAuth middleware in pkg/middlewares/auth/basicauth.go deduplicates concurrent password checks with a singleflight key built from the delimiter-free concatenation of password and...

CVE-2026-44332 Fiber: Username Enumeration via Timing Oracle in BasicAuth Default Authorizer

Fiber is an Express inspired web framework written in Go. Prior to 3.3.0, the default Authorizer function in the BasicAuth middleware in middleware/basicauth/config.go uses short-circuit evaluation that skips password hash comparison for non-existent usernames, enabling reliable remote username...

CVE-2026-44332

Fiber is an Express inspired web framework written in Go. Prior to 3.3.0, the default Authorizer function in the BasicAuth middleware in middleware/basicauth/config.go uses short-circuit evaluation that skips password hash comparison for non-existent usernames, enabling reliable remote username...

CVE-2026-54763

Traefik is an HTTP reverse proxy and load balancer. Prior to v2.11.51, v3.6.22, and v3.7.6, Traefik's BasicAuth, DigestAuth, and ForwardAuth middlewares strip canonical-cased spoofed identity headers before writing Traefik's own value, but do not account for underscore-variant header names, which...

CVE-2026-44936

Missing filtering when the helmRepoURLRegex field isn't set on a GitRepo resource in SUSE Rancher Fleet's bundle reader in 0.15 before 0.15.2, 0.14 before 0.14.6, 0.13 before 0.13.11 and 0.12 before 0.12.15 forwards Helm authentication credentials BasicAuth to any URL specified in the helm.repo...

GHSA-G5VH-55HW-RXM8 GoFiber Vulnerable to Username Enumeration via Timing Oracle in BasicAuth Default Authorizer

Summary The default Authorizer function in GoFiber's BasicAuth middleware uses short-circuit evaluation that skips password hash comparison for non-existent usernames. With bcrypt-hashed passwords the primary use case, the timing difference between a valid and invalid username is approximately...

CVE-2026-55069

Kestra is an open-source, event-driven orchestration platform. Prior to 1.3.24, this vulnerability exists in the BasicAuth authentication component of the Kestra OSS workflow orchestration platform. An attacker who gains read access to the PostgreSQL database can exploit SHA-512's high computatio...

CVE-2026-55069

Kestra is an open-source, event-driven orchestration platform. Prior to 1.3.24, this vulnerability exists in the BasicAuth authentication component of the Kestra OSS workflow orchestration platform. An attacker who gains read access to the PostgreSQL database can exploit SHA-512's high computatio...

CVE-2026-55069 Kestra BasicAuth Password Stored as SHA-512 Enables Offline Brute-Force Attack

Kestra is an open-source, event-driven orchestration platform. Prior to 1.3.24, this vulnerability exists in the BasicAuth authentication component of the Kestra OSS workflow orchestration platform. An attacker who gains read access to the PostgreSQL database can exploit SHA-512's high computatio...

CVE-2026-55069 Kestra BasicAuth Password Stored as SHA-512 Enables Offline Brute-Force Attack

Kestra is an open-source, event-driven orchestration platform. Prior to 1.3.24, this vulnerability exists in the BasicAuth authentication component of the Kestra OSS workflow orchestration platform. An attacker who gains read access to the PostgreSQL database can exploit SHA-512's high computatio...

CVE-2026-55069

Kestra OSS (BasicAuth) stores administrator password with SHA-512; if an attacker gains read access to PostgreSQL, offline brute-force can recover the password. In Kubernetes, cracked credentials may enable reading ServiceAccount Tokens and all K8s Secrets, enabling vertical privilege escalation....