CVE-2026-76847

act (nektos/act) versions 0.2.81 through 0.2.89 are affected by a missing authorization flaw in the Artifacts V4 backend , which is started whenever a workflow uses actions/upload-artifact@v4 or actions/download-artifact@v4. Three compounding issues enable unauthenticated artifact access: (1) val...

EUVD-2026-64852

act starts an HTTP Artifacts V4 backend whenever a workflow uses actions/upload-artifact@v4 or actions/download-artifact@v4. The control-plane RPCs of that backend, including CreateArtifact, GetSignedArtifactURL, ListArtifacts, FinalizeArtifact and DeleteArtifact, accept a caller-supplied...

PT-2026-41976

Name of the Vulnerable Software and Affected Versions HAX CMS versions prior to 26.0.0 Description The hmacBase64 function in the HAXcms Node.js backend contains two cryptographic implementation errors. First, the function uses a hardcoded string "0" as the HMAC signing key instead of the intende...