CVE-2026-21622 Password Reset Tokens Do Not Expire
Attackers can take over accounts by using non-expiring password reset tokens found in leaked email archives.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-21622?
CVE-2026-21622 is a critical authentication bypass vulnerability in hexpm hex.pm, published on 5 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-613
Which versions are affected by CVE-2026-21622?
It affects 1 product.
Products include Hex Hexpm.
How do I fix CVE-2026-21622?
No fix has been published for CVE-2026-21622 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-21622 being exploited?
There is no known exploitation of CVE-2026-21622 in the wild and no public exploit code.
Other vulnerabilities in hexpm hex.pm
- CVE-2026-21618 Cross-site scripting (XSS) in OAuth Device Authorization screen
- CVE-2026-23940 Denial of Service via Oversized Package Upload
- CVE-2026-21621 Improper Scope Enforcement in OAuth client_credentials Flow Allows Read-Only API Key to Escalate to Full Access
- CVE-2026-23939 Path Traversal in Local File Store Backend
Sources
Also known as EEF-CVE-2026-21622, GHSA-6r94-pvwf-mxqm.