{"apiVersion":"1.0","identifier":"CVE-2026-77140","description":"The extension validates the HMAC of a frontend employee edit link only in the action that renders the edit form, not in the action that persists the change. An unauthenticated visitor who knows the UID of a visible employee record can send a direct POST request to the update action and overwrite that record without a valid edit link or any ownership check.","publishedAt":"2026-08-25T09:17:34","lastModifiedAt":"2026-08-27T20:18:38","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77140","cvssScore":8.7,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","epssProbability":0.00239,"riskScore":0.89,"affectedProduct":"TYPO3","affectedVersions":"unknown","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-77140","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-77140","en":"https://www.redsauce.net/en/cves/CVE-2026-77140","fr":"https://www.redsauce.net/fr/cves/CVE-2026-77140","pt":"https://www.redsauce.net/pt/cves/CVE-2026-77140","de":"https://www.redsauce.net/de/cves/CVE-2026-77140","sk":"https://www.redsauce.net/sk/cves/CVE-2026-77140","el":"https://www.redsauce.net/el/cves/CVE-2026-77140"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-77140"}}