CVE-2026-21622

Password Reset Tokens Do Not Expire

State: Published
Severity: 9.5 Critical
Published: Mar 5, 2026
Updated: Apr 21, 2026
Reserved: Jan 1, 2026

Description

Insufficient Session Expiration vulnerability in hexpm hexpm/hexpm ('Elixir.Hexpm.Accounts.PasswordReset' module) allows Account Takeover.

Password reset tokens generated via the "Reset your password" flow do not expire. When a user requests a password reset, Hex sends an email containing a reset link with a token. This token remains valid indefinitely until used. There is no time-based expiration enforced.

If a user's historical emails are exposed through a data breach (e.g., a leaked mailbox archive), any unused password reset email contained in that dataset could be used by an attacker to reset the victim's password. The attacker does not need current access to the victim's email account, only access to a previously leaked copy of the reset email.

This vulnerability is associated with program files lib/hexpm/accounts/password_reset.ex and program routines 'Elixir.Hexpm.Accounts.PasswordReset':can_reset?/3.

This issue affects hexpm: from 617e44c71f1dd9043870205f371d375c5c4d886d before bb0e42091995945deef10556f58d046a52eb7884.

Scores

CVSS	Score	Vector	Source
4.0	9.5 Critical	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L	EEF

Weaknesses

CWE-613 Insufficient Session Expiration

Affected Products

Product	Versions
hexpmhexpm	617e44c71f1dd9043870205f371d375c5c4d886d to before bb0e42091995945deef10556f58d046a52eb7884Affected
hex.pmhexpm	2025-08-01 to before 2026-03-05Affected

References

https://github.com/hexpm/hexpm/security/advisories/GHSA-6r94-pvwf-mxqmvendor-advisoryrelated
https://cna.erlef.org/cves/CVE-2026-21622.htmlrelated
https://osv.dev/vulnerability/EEF-CVE-2026-21622related
https://github.com/hexpm/hexpm/commit/bb0e42091995945deef10556f58d046a52eb7884patch

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