CVE-2026-75542
Incorrect Authorization vulnerability in the OAuth token endpoint in hexpm hexpm allows an API key holding the repositories permission to re
CVSS
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Sin CVSS
EPSS
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KEV
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Exploit Today
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0-100
Publicado: 24 ago 2026 · Última mod.: 25 ago 2026 · CWE-863
Sin historial EPSS suficiente todavía.
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.
- cna.erlef.orghttps://cna.erlef.org/cves/CVE-2026-75542.html
- github.comhttps://github.com/hexpm/hexpm/commit/bf0fb9d208f0acfabf7a2f7467c8231659e322a8
- github.comhttps://github.com/hexpm/hexpm/security/advisories/GHSA-rfx8-w654-8cpr
- osv.devhttps://osv.dev/vulnerability/EEF-CVE-2026-75542
- github.comhttps://github.com/hexpm/hexpm/security/advisories/GHSA-rfx8-w654-8cpr