GO-2026-6558 Traefik: BasicAuth singleflight coalescing reintroduces an unauthenticated username-enumeration timing oracle

Traefik: BasicAuth singleflight coalescing reintroduces an unauthenticated username-enumeration timing oracle. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports fr...

Rocky Linux 9.6 [TuxCare] Security Update: dovecot / dovecot-devel / dovecot-mysql / dovecot-pgsql / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1778220630)

The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1778220630 advisory. - Dovecot OTP authentication is vulnerable to replay attack under specific conditions. If auth cache is enabled, and username is...

Rocky Linux 8 [CIQ] Security Update: python-cryptography-debugsource / python3-cryptography / etc Multiple Vulnerabilities (crlsa-2021_1608)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-20211608 advisory. python-cryptography: bleichenbacher timing oracle attack against RSA decryption CVE-2020-25659 python-cryptography: certain sequences of update calls when...

AlmaLinux 9.6 [TuxCare] Security Update: dovecot / dovecot-devel / dovecot-mysql / dovecot-pgsql / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1778220630)

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1778220630 advisory. - Dovecot OTP authentication is vulnerable to replay attack under specific conditions. If auth cache is enabled, and username is...

CVE-2026-77987

A server-side request forgery SSRF vulnerability was identified in the notebook viewer of GitHub Enterprise Server. The notebook viewer validated the scheme and host of a user-supplied URL but did not validate the port, allowing requests to be directed to internal services listening on other port...

CVE-2026-77987 GitHub Enterprise Server notebook viewer vulnerable to Server-side request forgery

A server-side request forgery SSRF vulnerability was identified in the notebook viewer of GitHub Enterprise Server. The notebook viewer validated the scheme and host of a user-supplied URL but did not validate the port, allowing requests to be directed to internal services listening on other port...

CVE-2026-77987 GitHub Enterprise Server notebook viewer vulnerable to Server-side request forgery

A server-side request forgery SSRF vulnerability was identified in the notebook viewer of GitHub Enterprise Server. The notebook viewer validated the scheme and host of a user-supplied URL but did not validate the port, allowing requests to be directed to internal services listening on other port...

CVE-2026-77987

A server-side request forgery (SSRF) vulnerability exists in the notebook viewer of GitHub Enterprise Server (versions 3.17 through 3.22). The root cause is the failure to validate the port of user-supplied URLs, despite validating the scheme and host. This allows requests to internal services on...

GHSA-8FCF-V89G-XPG6 Traefik: BasicAuth singleflight coalescing reintroduces an unauthenticated username-enumeration timing oracle

Summary Traefik's BasicAuth middleware coalesces concurrent credential checks through a singleflight.Group to avoid hashing the same password many times at once. Since v3.6.11 the deduplication key was built from the submitted password plus the stored secret, so it depended on server state: a...

Traefik: BasicAuth singleflight coalescing reintroduces an unauthenticated username-enumeration timing oracle

Summary Traefik's BasicAuth middleware coalesces concurrent credential checks through a singleflight.Group to avoid hashing the same password many times at once. Since v3.6.11 the deduplication key was built from the submitted password plus the stored secret, so it depended on server state: a...

Tinyauth: User enumeration attack by timing oracle

Summary It's possible to enumerate users through a timing oracle. In other words: I can easily check if a username exists or not by observing the timing differences between logins. PoC Setup a tinyauth server with a local user. It can be over the network. Try to log in with the local user, using ...

GHSA-456H-WW26-F758 Tinyauth: User enumeration attack by timing oracle

Summary It's possible to enumerate users through a timing oracle. In other words: I can easily check if a username exists or not by observing the timing differences between logins. PoC Setup a tinyauth server with a local user. It can be over the network. Try to log in with the local user, using ...

CVE-2026-85725

LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, verifypassword in lightrag/api/passwords.py compares plaintext AUTHACCOUNTS password values with Python's == operator. The comparison can return after the first mismatching byte, creating response-time differences...

CVE-2026-85725

Prior to version 1.5.5 , LightRAG is vulnerable to a timing attack in the verify_password function within lightrag/api/passwords.py. The application uses Python's == operator to compare plaintext password values in AUTH_ACCOUNTS, which short-circuits on the first mismatching byte. A network attac...

CVE-2026-85725 LightRAG: Plaintext Passwords Compared Without Constant-Time Function

LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, verifypassword in lightrag/api/passwords.py compares plaintext AUTHACCOUNTS password values with Python's == operator. The comparison can return after the first mismatching byte, creating response-time differences...

CVE-2026-85725 LightRAG: Plaintext Passwords Compared Without Constant-Time Function

LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, verifypassword in lightrag/api/passwords.py compares plaintext AUTHACCOUNTS password values with Python's == operator. The comparison can return after the first mismatching byte, creating response-time differences...

CVE-2026-88010

Traefik (open source HTTP reverse proxy and load balancer) versions 3.6.11 through before 3.7.13 contain an unauthenticated username-enumeration timing oracle in the BasicAuth middleware. The checkPassword function in pkg/middlewares/auth/basic_auth.go constructs the singleflight key from the sub...

CVE-2026-88010 Traefik: BasicAuth singleflight coalescing reintroduces an unauthenticated username-enumeration timing oracle

Traefik is an open source HTTP reverse proxy and load balancer. From 3.6.11 until 3.7.13, checkPassword in pkg/middlewares/auth/basicauth.go constructs the BasicAuth singleflight key from the submitted password and stored secret. Concurrent requests for absent usernames therefore coalesce on one...

CVE-2026-88010 Traefik: BasicAuth singleflight coalescing reintroduces an unauthenticated username-enumeration timing oracle

Traefik is an open source HTTP reverse proxy and load balancer. From 3.6.11 until 3.7.13, checkPassword in pkg/middlewares/auth/basicauth.go constructs the BasicAuth singleflight key from the submitted password and stored secret. Concurrent requests for absent usernames therefore coalesce on one...

CVE-2026-88010 Traefik: BasicAuth singleflight coalescing reintroduces an unauthenticated username-enumeration timing oracle

Traefik is an open source HTTP reverse proxy and load balancer. From 3.6.11 until 3.7.13, checkPassword in pkg/middlewares/auth/basicauth.go constructs the BasicAuth singleflight key from the submitted password and stored secret. Concurrent requests for absent usernames therefore coalesce on one...