What is CVE-2023-4624?

CVE-2023-4624 is a low-severity vulnerability in Bookstackapp Bookstack, classified under Server-Side Request Forgery (SSRF). CVSS score: 2.4/10. Published 2023-08-30.

How severe is CVE-2023-4624?

Low severity. CVSS v3 base score is 2.4 out of 10.

Is CVE-2023-4624 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

SSRF in Bookstackapp Bookstack

CVE-2023-4624

Server-Side Request Forgery (SSRF) in GitHub repository bookstackapp/bookstack prior to v23.08.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2023-08-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 2.4 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (47.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.001

Affected products

Bookstackapp Bookstack
Bookstackapp Bookstackapp/bookstack — versions unspecified

Weakness classification (CWE)

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

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

huntr.dev/bounties/9ce5cef6-e546-44e7-addf-a2726fa4e60c (Exploit, Third Party Advisory)
github.com/bookstackapp/bookstack/commit/c324ad928dbdd54ce5b09eb0dabe60ef9de1ea… (Vendor Advisory)

Frequently asked questions

What is CVE-2023-4624?: CVE-2023-4624 is a low-severity vulnerability in Bookstackapp Bookstack, classified under Server-Side Request Forgery (SSRF). CVSS score: 2.4/10. Published 2023-08-30.
How severe is CVE-2023-4624?: Low severity. CVSS v3 base score is 2.4 out of 10.
Is CVE-2023-4624 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.