What is CVE-2023-3981?

CVE-2023-3981 is a medium-severity vulnerability in Omeka, classified under Server-Side Request Forgery (SSRF). CVSS score: 4.9/10. Published 2023-07-27.

How severe is CVE-2023-3981?

Medium severity. CVSS v3 base score is 4.9 out of 10.

SSRF in Omeka

CVE-2023-3981

Server-Side Request Forgery (SSRF) in GitHub repository omeka/omeka-s prior to 4.0.2.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2023-07-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.007 (50.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.5% 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

Omeka
Omeka Omeka/omeka-S — versions unspecified

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

huntr.dev/bounties/f5018226-0063-415d-9675-d7e30934ff78 (Exploit, Patch, Third Party Advisory)
github.com/omeka/omeka-s/commit/dc01ca1b03e845db8a6a6b665d8da36c8dcd2c31 (Patch)

Frequently asked questions

What is CVE-2023-3981?: CVE-2023-3981 is a medium-severity vulnerability in Omeka, classified under Server-Side Request Forgery (SSRF). CVSS score: 4.9/10. Published 2023-07-27.
How severe is CVE-2023-3981?: Medium severity. CVSS v3 base score is 4.9 out of 10.