CVE-2023-23737: mainwp mainwp broken links checker extension SQL Injection
CVSS: 9.8v3.1CriticalModified
Published 12-10-2023Last modified 28-04-2026
Vulnerability summary
CVE-2023-23737 is a critical (CVSS 9.8) SQL Injection vulnerability in mainwp mainwp broken links checker extension. EPSS estimates a 0.75% chance of exploitation in the next 30 days, higher than 54.1% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
0.75%
0%100%
Low · +0.15 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 12-10-2023PublishedVulnerability first disclosed.
- 28-04-2026Last modifiedVulnerability information updated.
Description
Unauth. SQL Injection (SQLi) vulnerability in MainWP MainWP Broken Links Checker Extension plugin <= 4.0 versions.
CVSS metrics
3 scores · 3 sources · 1 versionCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSources3 sources · 9.3–9.8
- CVE.orgCNA9.3CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:LDiffers
- wordfenceSource9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.75%
Chance of exploitation in the next 30 days
Percentile
54%
Versus all other CVEs
30-day change
+0.15 pp
From 0.60% on 20-09-2026
20-09-202620-10-2026
EPSS score0.75%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Mainwp1 product
- mainwp broken links checker extension≥ n/a, ≤ 4.0
Managewp1 product
- broken_link_checker≤ 4.0
Wordpress1 product
- mainwp-broken-links-checker-extension≤ 4.0
3 vendors · 3 products