CVE-2023-23737: Unauth

Q: How do I fix CVE-2023-23737?

broken link checker: upgrade to newer than 4.0. Exact commands for each OS are on this page.

Q: Is CVE-2023-23737 being exploited?

CVE-2023-23737 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-23737 affect?

CVE-2023-23737 affects broken link checker. Severity is critical (CVSS 9.3). Unauth. SQL Injection (SQLi) vulnerability in MainWP MainWP Broken Links Checker Extension plugin <= 4.0 versions.

Q: How urgent is CVE-2023-23737?

Priority 51/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.3REMOTEUPGRADE

CVE-2023-23737 is a critical-severity flaw (CVSS 9.3) affecting broken link checker. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unauth. SQL Injection (SQLi) vulnerability in MainWP MainWP Broken Links Checker Extension plugin <= 4.0 versions.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.3 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 45%)
CISA exploited list	No
Weakness	CWE-89
Published	2023-10-12
Last modified	2026-06-17

Publisher (CNA): Patchstack · Vendor: managewp

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-10-12 12:15 UTCPublished CVE record published
2026-06-17 05:37 UTCUpdated Record last modified

managewp broken link checker UPGRADE

Affected: <= 4.0

Fixed in: newer than 4.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy broken-link-checker || rpm -q broken-link-checker || broken-link-checker --version

2. UPGRADE to newer than 4.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade broken-link-checker

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade broken-link-checker

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-23737?

broken link checker: upgrade to newer than 4.0. Exact commands for each OS are on this page.

Is CVE-2023-23737 being exploited?

CVE-2023-23737 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-23737 affect?

CVE-2023-23737 affects broken link checker. Severity is critical (CVSS 9.3). Unauth. SQL Injection (SQLi) vulnerability in MainWP MainWP Broken Links Checker Extension plugin <= 4.0 versions.

How urgent is CVE-2023-23737?

Priority 51/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-25592 MEDIUM 5.9 UPGRADE Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPMU DEV
CVE-2024-10903 MEDIUM 4.7 UPGRADE The Broken Link Checker WordPress plugin before 2.4.2 does not validate a the link URLs before making a reques
CVE-2022-3922 MEDIUM 4.8 UPGRADE The Broken Link Checker WordPress plugin before 1.11.20 does not sanitise and escape some of its settings, whi
CVE-2022-2438 HIGH 7.2 UPGRADE The Broken Link Checker plugin for WordPress is vulnerable to deserialization of untrusted input via the '$log
CVE-2019-17207 MEDIUM 5.4 UPGRADE A reflected XSS vulnerability was found in includes/admin/table-printer.php in the broken-link-checker (aka Br

References

← Back to latest CVEs