In the Samly package before 1.4.0 for Elixir, Samly.State.Store.get_assertion/3 can return an expired session, which interferes with access control because Samly.AuthHandler uses a cached session and does not replace it, even after expiry.

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-25718
• dropbox/samly#13
• dropbox/samly@812b5c3
• https://diff.hex.pm/diff/samly/1.3.0..1.4.0
• https://github.com/dropbox/samly
• https://github.com/handnot2/samly
• https://hex.pm/packages/samly
• dropbox/samly@7637ebe