What is CVE-2023-28777?

CVE-2023-28777 is a high-severity vulnerability in Learndash, classified under SQL Injection. CVSS score: 8.5/10. Published 2023-10-31.

How severe is CVE-2023-28777?

High severity. CVSS v3 base score is 8.5 out of 10.

Is CVE-2023-28777 known to be exploited?

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

SQL Injection in Learndash

CVE-2023-28777

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in LearnDash LearnDash LMS allows SQL Injection.This issue affects LearnDash LMS: from n/a through 4.5.3.

Vulnerability class: SQL Injection

Published 2023-10-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:L.

EPSS exploit prediction

EPSS: 0.007 (50.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.4% 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

Weakness classification (CWE)

CWE-89 — SQL Injection

Public proof-of-concept exploits

20142995/nuclei-templates

References

patchstack.com/database/vulnerability/sfwd-lms/wordpress-learndash-lms-plugin-4… (Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2023-28777?: CVE-2023-28777 is a high-severity vulnerability in Learndash, classified under SQL Injection. CVSS score: 8.5/10. Published 2023-10-31.
How severe is CVE-2023-28777?: High severity. CVSS v3 base score is 8.5 out of 10.
Is CVE-2023-28777 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.