{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-100836","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-09-26T23:23:03.410Z","datePublished":"2026-09-27T01:29:58.070Z","dateUpdated":"2026-09-27T01:29:58.070Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-09-27T01:29:58.070Z"},"datePublic":"2026-05-27T00:00:00.000Z","title":"Edgeless Systems Contrast through 1.20.0 Denial of Service via ciphertextContainer","descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Improper Validation of Array Index","cweId":"CWE-129","type":"CWE"}]}],"affected":[{"vendor":"edgelesssys","product":"contrast","defaultStatus":"unaffected","packageURL":"pkg:golang/github.com/edgelesssys/contrast","versions":[{"version":"0","status":"affected","versionType":"semver","lessThanOrEqual":"1.20.0"}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW","baseScore":4.3,"baseSeverity":"MEDIUM"}}],"references":[{"url":"https://github.com/edgelesssys/contrast/security/advisories/GHSA-3ccm-4qq2-5wrp","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-3ccm-4qq2-5wrp)"},{"name":"VulnCheck Advisory: Edgeless Systems Contrast through 1.20.0 Denial of Service via ciphertextContainer","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/edgeless-systems-contrast-through-1.20.0-denial-of-service-via-ciphertextcontainer"}],"x_generator":{"engine":"vulncheck-endgame"}}}}