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 short base64-encoded ciphertext, causing log spam and request failures without crashing the process.
History

Mon, 28 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 27 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Edgelesssys
Edgelesssys contrast
Vendors & Products Edgelesssys
Edgelesssys contrast

Sun, 27 Sep 2026 02:00:00 +0000

Type Values Removed Values Added
Description 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 short base64-encoded ciphertext, causing log spam and request failures without crashing the process.
Title Edgeless Systems Contrast through 1.20.0 Denial of Service via ciphertextContainer
Weaknesses CWE-129
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-09-27T01:29:58.070Z

Updated: 2026-09-28T16:00:49.167Z

Reserved: 2026-09-26T23:23:03.410Z

Link: CVE-2026-100836

cve-icon Vulnrichment

Updated: 2026-09-28T16:00:45.691Z

cve-icon NVD

Status : Deferred

Published: 2026-09-27T02:17:21.797

Modified: 2026-09-28T16:17:11.160

Link: CVE-2026-100836

cve-icon Redhat

No data.