CyberRota Analysis
AI-GeneratedThe vulnerability allows users to retain access to an organization's private packages and documentation even after their membership or session has ended, due to a flaw in the OAuth token issuance process that improperly handles refresh tokens. This results in unauthorized read-only access until the refresh token expires, which can take up to 30 days, posing a risk to sensitive organizational data. Organizations using hex.pm should prioritize addressing this vulnerability to ensure proper session management and protect their private resources.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Insufficient Session Expiration vulnerability in OAuth token issuance in hexpm hexpm allows a user whose organization membership or session has ended to keep reading the organization's private packages and their documentation tarballs via a retained refresh token. generate_refresh_token/4 in lib/hexpm/oauth/jwt.ex signs the refresh token with the same iss, aud and scope claims as the access token, so it carries the same repository:<org> scopes. The CDN service that serves private repositories verifies the signature and time claims and then authorizes from the scope claim, with no database lookup and no way to tell the two token kinds apart. Removing a member or revoking a session therefore takes effect at the CDN only when the 30 day refresh token expires, instead of after the 30 minute access token lifetime. Access is read-only and limited to organizations the account belonged to when the token was granted. This issue affects hex.pm: from 2025-10-10 before 2026-09-22.