CVE-2026-100836

Contrast through 1.20.0 contains a panic vulnerability in the transit-engine endpoint's ciphertextContainer.UnmarshalJSON function that fails to validate decoded ciphertext length before slicing. An authenticated workload with a valid mesh certificate can trigger a runtime panic by submitting a...

CVE-2026-100836 Edgeless Systems Contrast through 1.20.0 Denial of Service via ciphertextContainer

Contrast through 1.20.0 contains a panic vulnerability in the transit-engine endpoint's ciphertextContainer.UnmarshalJSON function that fails to validate decoded ciphertext length before slicing. An authenticated workload with a valid mesh certificate can trigger a runtime panic by submitting a...

CVE-2026-100836 Edgeless Systems Contrast through 1.20.0 Denial of Service via ciphertextContainer

Contrast through 1.20.0 contains a panic vulnerability in the transit-engine endpoint's ciphertextContainer.UnmarshalJSON function that fails to validate decoded ciphertext length before slicing. An authenticated workload with a valid mesh certificate can trigger a runtime panic by submitting a...

Constrata's coordinator transit engine `ciphertextContainer.UnmarshalJSON` panics on attacker-controlled short ciphertexts

Summary ciphertextContainer.UnmarshalJSON decodes the third :-separated component of a vault:vX:base64... ciphertext and then unconditionally takes a 12-byte prefix slice for the AES-GCM nonce: c.nonce = fullCiphertext:aesGCMNonceSize. If the decoded blob is shorter than 12 bytes, the slice...

PT-2026-99456

Name of the Vulnerable Software and Affected Versions Contrast versions prior to 1.20.1 Description A panic occurs in the ciphertextContainer.UnmarshalJSON function within the 'transit-engine' endpoint. The issue arises because the function fails to validate the length of the decoded ciphertext...