{"apiVersion":"1.0","identifier":"CVE-2026-49478","description":"Fulcio is a certificate authority for issuing code signing certificates for an OpenID Connect (OIDC) identity. Versions through 1.8.5 improperly follow cross-host redirects and attach Kubernetes ServiceAccount tokens during OIDC discovery, allowing a malicious or compromised issuer to perform blind SSRF, substitute and cache malicious JWKS keys, or disclose ServiceAccount tokens to external hosts. Version 1.8.6 blocks cross-host redirects, restricts token injection, and restricts local token loading. No known workarounds are available.","publishedAt":"2026-08-13T13:19:09","lastModifiedAt":"2026-08-15T04:18:21","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-49478","cvssScore":8.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","epssProbability":0.00175,"riskScore":0.88,"affectedProduct":"Fulcio","affectedVersions":"<=1.8.5","vulnerabilityType":"Critical software","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-49478","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-49478","en":"https://www.redsauce.net/en/cves/CVE-2026-49478","fr":"https://www.redsauce.net/fr/cves/CVE-2026-49478","pt":"https://www.redsauce.net/pt/cves/CVE-2026-49478","de":"https://www.redsauce.net/de/cves/CVE-2026-49478","sk":"https://www.redsauce.net/sk/cves/CVE-2026-49478","el":"https://www.redsauce.net/el/cves/CVE-2026-49478"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-49478"}}