EUVD-2026-15756

Mattermost versions 11.4.x = 11.4.0, 11.3.x = 11.3.1, 11.2.x = 11.2.3, 10.11.x = 10.11.11 fail to rate limit login requests which allows unauthenticated remote attackers to cause denial of service server crash and restart via HTTP/2 single packet attack with 100+ parallel login requests...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS due to the lack of rate limiting in the login process. An attacker can exhaust server resources by sending a large number of parallel login requests via a single HTTP/2 packet, potentially causing the server to cra...

CVE-2026-26233

Mattermost versions 11.4.x = 11.4.0, 11.3.x = 11.3.1, 11.2.x = 11.2.3, 10.11.x = 10.11.11 fail to rate limit login requests which allows unauthenticated remote attackers to cause denial of service server crash and restart via HTTP/2 single packet attack with 100+ parallel login requests...

CVE-2026-26233

CVE-2026-26233 affects Mattermost releases 10.11.x to 11.4.x, where login requests are not rate-limited, enabling unauthenticated remote attackers to cause denial of service via an HTTP/2 single-packet attack with 100+ parallel login requests. No patch/version details are provided in the document...

PT-2026-27961

Name of the Vulnerable Software and Affected Versions Mattermost versions 11.4.0 and earlier Mattermost versions 11.3.1 and earlier Mattermost versions 11.2.3 and earlier Mattermost versions 10.11.11 and earlier Description The software does not adequately limit the rate of login requests. This...

FreeBSD -- TCP: remotely exploitable DoS vector (mbuf leak)

Problem Description: When a challenge ACK is to be sent tcprespond constructs and sends the challenge ACK and consumes the mbuf that is passed in. When no challenge ACK should be sent the function returns and leaks the mbuf. Impact: If an attacker is either on path with an established TCP...

CVE-2026-33419 MinIO: LDAP login brute-force via user enumeration and missing rate limit

MinIO is a high-performance object storage system. Prior to RELEASE.2026-03-17T21-25-16Z, MinIO AIStor's STS Security Token Service AssumeRoleWithLDAPIdentity endpoint is vulnerable to LDAP credential brute-forcing due to two combined weaknesses: 1 distinguishable error responses that enable...

CVE-2026-33419

MinIO AIStor STS endpoint AssumeRoleWithLDAPIdentity is vulnerable to LDAP credential brute-forcing due to username enumeration via distinguishable error responses and no rate limiting. An unauthenticated attacker can enumerate LDAP usernames and perform unlimited password guesses to obtain tempo...

GO-2026-4803 MinIO LDAP login brute-force via user enumeration and missing rate limit in github.com/minio/minio

MinIO LDAP login brute-force via user enumeration and missing rate limit in github.com/minio/minio...

Reliance on Untrusted Inputs in a Security Decision

Overview Affected versions of this package are vulnerable to Reliance on Untrusted Inputs in a Security Decision through spoofed headers in the Rate-Limit process. An attacker can circumvent request throttling by manipulating HTTP headers to appear as different users or clients, potentially...

GO-2026-4791 Vikunja has a Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers in code.vikunja.io/api

Vikunja has a Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers in code.vikunja.io/api. 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 from...

Reliance on Untrusted Inputs in a Security Decision

Overview Affected versions of this package are vulnerable to Reliance on Untrusted Inputs in a Security Decision through spoofed headers in the Rate-Limit process. An attacker can circumvent request throttling by manipulating HTTP headers to appear as different users or clients, potentially...

EUVD-2026-13855

The WebSocket Application Programming Interface lacks restrictions on the number of authentication requests. This absence of rate limiting may allow an attacker to conduct denial-of-service attacks by suppressing or mis-routing legitimate charger telemetry, or conduct brute-force attacks to gain...

CVE-2026-29794

Vikunja is an open-source self-hosted task management platform. Starting in version 0.8 and prior to version 2.2.0, unauthenticated users are able to bypass the application's built-in rate-limits by spoofing the X-Forwarded-For or X-Real-IP headers due to the rate-limit relying on the value of...

EUVD-2026-13706

Vikunja has a Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers...

Vikunja has a Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers

Summary Unauthenticated users are able to bypass the application's built-in rate-limits by spoofing the X-Forwarded-For or X-Real-IP headers due to the rate-limit relying on the value of echo.Context.RealIP. Details In the first file below, the rate-limit for unauthenticated users can be observed...

GHSA-M547-HP4W-J6JX Vikunja has a Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers

Summary Unauthenticated users are able to bypass the application's built-in rate-limits by spoofing the X-Forwarded-For or X-Real-IP headers due to the rate-limit relying on the value of echo.Context.RealIP. Details In the first file below, the rate-limit for unauthenticated users can be observed...

CVE-2026-29794 Vikunja has Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers

Vikunja is an open-source self-hosted task management platform. Starting in version 0.8 and prior to version 2.2.0, unauthenticated users are able to bypass the application's built-in rate-limits by spoofing the X-Forwarded-For or X-Real-IP headers due to the rate-limit relying on the value of...

CVE-2026-29794

Vikunja (open-source self-hosted task management) before version 2.2.0 is affected by a rate-limit bypass vulnerability. The issue arises because rate-limiting is enforced using (echo.Context).RealIP, and unauthenticated requests can spoof headers X-Forwarded-For or X-Real-IP to bypass limits. Th...

CVE-2026-29794 Vikunja has Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers

Vikunja is an open-source self-hosted task management platform. Starting in version 0.8 and prior to version 2.2.0, unauthenticated users are able to bypass the application's built-in rate-limits by spoofing the X-Forwarded-For or X-Real-IP headers due to the rate-limit relying on the value of...