Security Bulletin: Authentication Bypass in Webhook Endpoints Allowed Unauthorized Flow Execution

Summary A vulnerability in the webhook authentication logic allowed unauthenticated users to trigger execution of any flow. The system incorrectly bypassed API key validation when the WEBHOOKAUTHENABLE configuration was set to False the default setting, allowing remote attackers who knew a flow's...

NPM: OpenClaw: Slack and Zalo webhook secrets could remain active after secrets.reload

NPM: OpenClaw: Slack and Zalo webhook secrets could remain active after secrets.reload vulnerability discovered by ? in WordPress Npm openclaw versions = 2026.4.21...

OpenClaw: Slack and Zalo webhook secrets could remain active after secrets.reload

Summary Slack and Zalo webhook secrets could remain active after secrets.reload. In affected versions, a caller with an old webhook secret during the stale-secret window could keep accepting the previous secret after secrets.reload. This advisory is scoped to the named feature and configuration. ...

PT-2026-76821

Name of the Vulnerable Software and Affected Versions MLflow versions prior to 3.15.0 Description An unauthenticated Server-Side Request Forgery SSRF exists in the MLflow Tracking Server. The POST /api/2.0/mlflow/webhooks/id/test endpoint allows an attacker to make the server issue HTTP requests ...

Rancher Fleet has Unauthenticated Webhook: Regex Injection via Unsanitized Repository URL Components

Impact A vulnerability has been identified in Fleet when the webhook endpoint is configured without a secret; an attacker can forge webhook requests. The attacker doesn't need to know the specific repository or path configured in the GitRepo resource to make Fleet process these requests. An...

GHSA-JMF4-M7J9-G72R Rancher Fleet has Unauthenticated Webhook: Regex Injection via Unsanitized Repository URL Components

Impact A vulnerability has been identified in Fleet when the webhook endpoint is configured without a secret; an attacker can forge webhook requests. The attacker doesn't need to know the specific repository or path configured in the GitRepo resource to make Fleet process these requests. An...

Insufficient Verification of Data Authenticity

Overview Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity via unsanitized repository URL components in the webhook endpoint when no secret is configured. An attacker can trigger continuous repository re-cloning, increasing network traffic and...

GHSA-MJGF-XJ26-9QF9 pay-rails/pay: non-constant-time HMAC comparison in Paddle Billing webhook signature verifier

Summary Pay::Webhooks::PaddleBillingControllervalidsignature? app/controllers/pay/webhooks/paddlebillingcontroller.rb verifies the Paddle Billing webhook signature by computing OpenSSL::HMAC.hexdigest... and comparing it to the attacker-supplied header value using Ruby's String==. Ruby's == is...

pay-rails/pay: non-constant-time HMAC comparison in Paddle Billing webhook signature verifier

Summary Pay::Webhooks::PaddleBillingControllervalidsignature? app/controllers/pay/webhooks/paddlebillingcontroller.rb verifies the Paddle Billing webhook signature by computing OpenSSL::HMAC.hexdigest... and comparing it to the attacker-supplied header value using Ruby's String==. Ruby's == is...

Timing Attack

Overview pay is a package for processing payments in Ruby on Rails apps Affected versions of this package are vulnerable to Timing Attack via the validsignature? function. An attacker can recover valid webhook signatures by sending multiple requests with crafted Paddle-Signature header values and...

SUSE CVE-2026-57947

Pinpoint through 3.1.0 contains a server-side request forgery vulnerability in the webhook registration endpoint that allows authenticated users to register internal URLs due to missing SSRF protection. Attackers can trigger alarm threshold breaches to force the server to issue POST requests to...

PT-2026-55137

Impact A vulnerability has been identified in Fleet when the webhook endpoint is configured without a secret; an attacker can forge webhook requests. The attacker doesn't need to know the specific repository or path configured in the GitRepo resource to make Fleet process these requests. An...

PT-2026-54763

Name of the Vulnerable Software and Affected Versions Rancher Fleet affected versions not specified Description An authentication bypass exists in the webhook component. Additionally, a Pod Security Standard PSS bypass can be achieved through the manipulation of namespace labels. Recommendations ...

PT-2026-55202

Name of the Vulnerable Software and Affected Versions Fleet versions prior to 0.15.2 Fleet versions prior to 0.14.6 Fleet versions prior to 0.13.11 Fleet versions prior to 0.12.15 Description An issue exists when the webhook endpoint is configured without a secret, allowing unauthenticated...

PT-2026-57509

Summary Pay::Webhooks::PaddleBillingControllervalid signature? app/controllers/pay/webhooks/paddle billing controller.rb verifies the Paddle Billing webhook signature by computing OpenSSL::HMAC.hexdigest... and comparing it to the attacker-supplied header value using Ruby's String==. Ruby's == is...

Malicious code in @sudoughnym/enviro-demo (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 02c1c204d0f458d13d7140f4b7a007d551095665a418e9146037be9a5b2b7957 @sudoughnym/[email protected] ships preinstall.js and postinstall.js lifecycle scripts that run automatically on npm install. Both scripts collect...

MAL-2026-6697 Malicious code in @sudoughnym/enviro-demo (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 02c1c204d0f458d13d7140f4b7a007d551095665a418e9146037be9a5b2b7957 @sudoughnym/[email protected] ships preinstall.js and postinstall.js lifecycle scripts that run automatically on npm install. Both scripts collect...

Fission: Environment Runtime.Container and Builder.Container SecurityContext bypass allows privileged pod creation

Summary A follow-up bypass of the round-4 PodSpec hardening GHSA-gx55-f84r-v3r7, GHSA-wmgg-3p4h-48x7, GHSA-v455-mv2v-5g92. Those advisories validate and sanitize the PodSpec spec.runtime.podSpec / spec.builder.podSpec / function.spec.podSpec, but the Environment CRD also exposes...

GHSA-V455-MV2V-5G92 Fission Container Executor Function PodSpec Injection Leading to Node Escape

Summary Fission's Container Executor path lets a tenant supply Function.spec.podspec directly; the executor merges it into the executor-built podspec and creates a Deployment whose pods run the user's container image. Details Two flaws compounded: 1...

Fission Environment CRD PodSpec Injection Leading to Node Escape and Cluster Takeover

Summary A stronger framing of the same root cause as GHSA-gx55-f84r-v3r7: the Environment.spec.runtime.podSpec / spec.builder.podSpec passthrough lacked validation, and MergePodSpec propagated dangerous fields into the generated pods. Details Three independent flaws compounded: 1. Validate gap...