What is CVE-2024-25718?

CVE-2024-25718 is a critical-severity vulnerability in Dropbox Samly, classified under Insufficient Session Expiration. CVSS score: 9.8/10. Published 2024-02-11.

How severe is CVE-2024-25718?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Resource exhaustion in Dropbox Samly

CVE-2024-25718

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.

Published 2024-02-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (49.9th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Dropbox Samly

Weakness classification (CWE)

References

hex.pm/packages/samly (Release Notes)
github.com/handnot2/samly (Product)
github.com/dropbox/samly (Product)
diff.hex.pm/diff/samly/1.3.0..1.4.0 (Patch)
github.com/dropbox/samly/pull/13 (Patch)
github.com/dropbox/samly/pull/13/commits/812b5c3ad076dc9c9334c1a560c8e6470607d1… (Patch)

Frequently asked questions

What is CVE-2024-25718?: CVE-2024-25718 is a critical-severity vulnerability in Dropbox Samly, classified under Insufficient Session Expiration. CVSS score: 9.8/10. Published 2024-02-11.
How severe is CVE-2024-25718?: Critical severity. CVSS v3 base score is 9.8 out of 10.