PYSEC-2026-3523 PraisonAI: Webhook signature verification skipped (fail-open) when secret unset, allowing forged inbound webhooks (WhatsApp & Linear bots)

The WhatsApp and Linear bot adapters verify the inbound webhook HMAC signature only when a secret is configured. When the secret environment variable is unset — the default on a fresh install and common in development — verification is skipped entirely and the webhook body is parsed and dispatche...

PYSEC-2026-3510 PraisonAI LinearBot processes unsigned webhooks when LINEAR_WEBHOOK_SECRET is missing

PraisonAI LinearBot processes unsigned webhooks when LINEARWEBHOOKSECRET is missing Summary PraisonAI's LinearBot starts a public webhook listener on 0.0.0.0 and treats LINEARWEBHOOKSECRET as optional. When the secret is absent, startup only logs a warning and handlewebhook skips Linear-Signature...

PT-2026-64041

APIFold reads an OpenAPI 3.x or Swagger 2.x specification and generates a live, production-ready MCP server endpoint. Prior to commit 7f19b52280f414f57af2b79a95333d1c8fbeece5, the /webhooks/:serverSlug/:eventName endpoint accepts arbitrary unauthenticated JSON and stores it in Redis and the webho...

GO-2026-6033 Gitea: Webhooks created by a collaborator keep firing after their repo access is revoked → ongoing real-time exfiltration of private repo content in gitea.dev

Gitea: Webhooks created by a collaborator keep firing after their repo access is revoked → ongoing real-time exfiltration of private repo content in gitea.dev...

Missing Authentication for Critical Function

Overview n8n is a n8n Workflow Automation Tool Affected versions of this package are vulnerable to Missing Authentication for Critical Function via the DELETE /$restEndpoint/test-webhook/:id endpoint being registered before authentication middleware is applied. An attacker can disrupt active test...

Duplicate Advisory: Unauthenticated Endpoint Allows Cancellation of Any User's Active Test Webhook

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-33q9-f52j-gc75. This link is maintained to preserve external references. Original Description n8n before 2.28.0 and before 2.27.4 on the 2.27.x branch registers the DELETE /$restEndpoint/test-webhook/:id endpoin...

CVE-2026-65014

n8n before 2.28.0 and before 2.27.4 on the 2.27.x branch registers the DELETE /$restEndpoint/test-webhook/:id endpoint before authentication middleware is applied, allowing any unauthenticated network caller who knows a workflow ID to cancel that workflow's active test webhook registration. The...

EUVD-2026-47630

n8n before 2.28.0 and before 2.27.4 on the 2.27.x branch registers the DELETE /$restEndpoint/test-webhook/:id endpoint before authentication middleware is applied, allowing any unauthenticated network caller who knows a workflow ID to cancel that workflow's active test webhook registration. The...

PT-2026-63344

n8n before 2.28.0 and before 2.27.4 on the 2.27.x branch registers the DELETE /$restEndpoint/test-webhook/:id endpoint before authentication middleware is applied, allowing any unauthenticated network caller who knows a workflow ID to cancel that workflow's active test webhook registration. The...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF in the handling of outbound HTTP requests for webhooks, repository migration, and OpenID sign-in due to insufficient filtering of non-routable and internal IP address ranges. An attacker can access...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF in the handling of outbound HTTP requests for webhooks, repository migration, and OpenID sign-in due to insufficient filtering of non-routable and internal IP address ranges. An attacker can access...

GHSA-2FCR-JFVC-VGG2 Gitea: Two SSRF findings

| --- | --- | | Versions tested | gitea/gitea:1.26.2 digest sha256:7d13848af12645600a5f9d93ee2560daa9c6fa6b5b859b7bff3a5e1c0b661031; gitea/gitea:latest resolves to the same digest at time of writing | | Source review | git checkout v1.26.2 commit 2c749ce | | Reproduction | bash runpoc.sh single...

GHSA-66M4-5JJR-2RG5 Gitea: Webhooks created by a collaborator keep firing after their repo access is revoked → ongoing real-time exfiltration of private repo content

Affected product Gitea — services/repository/collaboration.go DeleteCollaboration + webhook delivery Summary When a collaborator with admin permission on a private repo creates a webhook, that webhook keeps firing after the collaborator's access is revoked. Gitea's revocation cleanup...

EUVD-2026-45985

HeyForm is an open-source form builder. Prior to version 3.0.0-rc.9, completeSubmission accepts a hiddenFields: id, name, value array from the submitter and stores it verbatim in submission.hiddenFields, without validating the supplied id/name against the form's declared form.hiddenFields schema...

CVE-2026-63428 HeyForm: completeSubmission persists submitter-supplied hidden fields verbatim without validating against the form's declared hidden-field set

HeyForm is an open-source form builder. Prior to version 3.0.0-rc.9, completeSubmission accepts a hiddenFields: id, name, value array from the submitter and stores it verbatim in submission.hiddenFields, without validating the supplied id/name against the form's declared form.hiddenFields schema...

CVE-2026-63428

Summary: HeyForm (open-source form builder) prior to 3.0.0-rc.9 stores submitter-supplied hiddenFields unvalidated, allowing an anonymous submitter to inject arbitrary key/value data into submission.hiddenFields. Those fields are forwarded to every webhook integration registered on the form, enab...

CVE-2026-63428 HeyForm: completeSubmission persists submitter-supplied hidden fields verbatim without validating against the form's declared hidden-field set

HeyForm is an open-source form builder. Prior to version 3.0.0-rc.9, completeSubmission accepts a hiddenFields: id, name, value array from the submitter and stores it verbatim in submission.hiddenFields, without validating the supplied id/name against the form's declared form.hiddenFields schema...

Uncontrolled Resource Consumption

github.com/zalando/skipper is vulnerable to Uncontrolled Resource Consumption. The vulnerability is due to reading the entire admission webhook request body without enforcing a size limit, which allows an attacker to send excessively large payloads and exhaust memory, resulting in a...

CVE-2026-62234

Grav before 2.0.4 fails to restrict cURL protocols in webhook dispatch, allowing authenticated users with api.webhooks.write permission to create webhooks with file://, dict://, or gopher:// URLs. Attackers can trigger webhook events to read local files, access process information, or pivot to...

CVE-2026-62234 Grav < 2.0.4 SSRF via Unrestricted cURL Protocols

Grav before 2.0.4 fails to restrict cURL protocols in webhook dispatch, allowing authenticated users with api.webhooks.write permission to create webhooks with file://, dict://, or gopher:// URLs. Attackers can trigger webhook events to read local files, access process information, or pivot to...