{"apiVersion":"1.0","identifier":"CVE-2026-75542","description":"Incorrect Authorization vulnerability in the OAuth token endpoint in hexpm hexpm allows an API key holding the repositories permission to read another organization-s private packages. When an API key is exchanged for a token through the OAuth client_credentials grant, validate_scopes_against_key/2 in lib/hexpm_web/controllers/api/oauth_controller.ex admits a requested scope whenever the key carries the repositories permission and the scope string begins with repository:. The organization name is never resolved against the principal, and expand_repositories_scope/3 only rewrites the literal repositories scope, so an explicit repository:<name> passes through untouched. Both CDN edges authorize repository access from the token claim without querying the database, so the minted token is read access to that organization-s private packages until it expires. This issue affects hex.pm: from 2025-10-18 before 2026-08-24.","publishedAt":"2026-08-24T21:17:47","lastModifiedAt":"2026-08-25T20:17:04","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-75542","cvssScore":8.3,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/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":0.00362,"riskScore":0.86,"affectedProduct":"hexpm","affectedVersions":"unknown","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-75542","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-75542","en":"https://www.redsauce.net/en/cves/CVE-2026-75542","fr":"https://www.redsauce.net/fr/cves/CVE-2026-75542","pt":"https://www.redsauce.net/pt/cves/CVE-2026-75542","de":"https://www.redsauce.net/de/cves/CVE-2026-75542","sk":"https://www.redsauce.net/sk/cves/CVE-2026-75542","el":"https://www.redsauce.net/el/cves/CVE-2026-75542"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-75542"}}