What is CVE-2023-51539?

CVE-2023-51539 is a medium-severity vulnerability in Apollo13themes Apollo13 Framework Extensions, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.4/10. Published 2024-01-05.

How severe is CVE-2023-51539?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Is CVE-2023-51539 known to be exploited?

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

CSRF in Apollo13themes Apollo13 Framework Extensions

CVE-2023-51539

Cross-Site Request Forgery (CSRF) vulnerability in Apollo13Themes Apollo13 Framework Extensions.This issue affects Apollo13 Framework Extensions: from n/a through 1.9.1.

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2024-01-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L.

EPSS exploit prediction

EPSS: 0.002 (10.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

Public proof-of-concept exploits

20142995/nuclei-templates

References

patchstack.com/database/vulnerability/apollo13-framework-extensions/wordpress-a… (Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2023-51539?: CVE-2023-51539 is a medium-severity vulnerability in Apollo13themes Apollo13 Framework Extensions, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.4/10. Published 2024-01-05.
How severe is CVE-2023-51539?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2023-51539 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.