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Findings

CVE-2024-29886

Serverpod improved security for stored password hashes

Published Mar 28, 2024 · corrected/updated Sep 10, 2026 · evidence confidence high

## Description ### Improved security for stored password hashes Serverpod now uses the OWASP, [source](https://cheatsheetseries.owasp.org/cheatsheets/Password_Storage_Cheat_Sheet.html#introduction), recommended Argon2Id password hash algorithm to store password hashes for the email authentication module. Starting from Serverpod all users that either creates an account or authenticates with the server will have their password stored using the safer algorithm. No changes are required from the developer to start storing passwords using the safer algorithm. ### Why did we change how passwords are stored? An issue was identified with the old password hash algorithm that made it susceptible to rainbow attacks if the database was compromised. It is strongly recommended to migrate your existing password hashes. ### Migrate existing password hashes The email authentication module provides a helper method to migrate all the existing legacy password hashes in the database. Simply call with a session instance as an argument to migrate the password hashes. The method is implemented as an idempotent operation and will yield the same result regardless of how many times it is called. We recommend either implementing a web server route that can be called remotely or by calling the method as part of starting the server. Following is example code for implementing a web server route. Web server route code ### How we migrate existing password hashes Since password hashes can’t be recalculated without knowledge of the plain text password, the method in the email authentication module applies the new algorithm to the already stored password hashes. When the affected users later authenticate, their password hash will be calculated using both algorithms in tandem. If the authentication is accepted, the stored password hash will be updated to only use the new algorithm so that further authentication only needs to run the new algorithm. ### Impact All versions of pre ### Patches Upgrading to

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

CVE-2024-29886 is a medium public vulnerability record for this product. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether this product is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: serverpod_auth_server (0 → 1.2.6). Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: CVSS 5.3, EPSS 0.3%. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-916. Sources contributing to this record: cve_org, epss, github, osv. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in the CISA KEV catalog.

  • Patch and remediation

    No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 28, 2024 · GitHub Advisory Database

    Detected

    ## Description ### Improved security for stored password hashes Serverpod now uses the OWASP, [source](https://cheatsheetseries.owasp.org/cheatsheets/Password_Storage_Cheat_Sheet.html#introduction), recommended Argon2Id password hash algorithm to store password hashes for the email authentication module. Starting from Serverpod all users that either creates an account or authenticates with the ser

  2. Sep 10, 2026 · GitHub Advisory Database

    Fix available

    serverpod_auth_server fixed in 1.2.6

  3. Sep 10, 2026 · GitHub Advisory Database

    Fix available

    serverpod_auth_server fixed in 1.2.6

  4. Sep 10, 2026 · GitHub Advisory Database

    Updated

    ## Description ### Improved security for stored password hashes Serverpod now uses the OWASP, [source](https://cheatsheetseries.owasp.org/cheatsheets/Password_Storage_Cheat_Sheet.html#introduction), recommended Argon2Id password hash algorithm to store password hashes for the email authentication module. Starting from Serverpod all users that either creates an account or authenticates with the ser

Affected

  • Pub serverpod_auth_server0 → 1.2.6

Sources

References