CVE-2023-32740: Unauth

Q: How do I fix CVE-2023-32740?

custom 404 pro: upgrade to newer than 3.8.1. Exact commands for each OS are on this page.

Q: Is CVE-2023-32740 being exploited?

CVE-2023-32740 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-2023-32740 affect?

CVE-2023-32740 affects custom 404 pro. Severity is medium (CVSS 5.8). Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in Kunal Nagar Custom 404 Pro plugin <= 3.8.1 versions.

Q: How urgent is CVE-2023-32740?

Priority 27/100. No elevated risk signals yet.

Routine

MEDIUM 5.8UPGRADE

CVE-2023-32740 is a medium-severity flaw (CVSS 5.8) affecting custom 404 pro. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in Kunal Nagar Custom 404 Pro plugin <= 3.8.1 versions.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.8 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 73%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-08-30
Last modified	2026-06-17

Publisher (CNA): Patchstack · Vendor: kunalnagar

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

Am I affected?

Timeline

2023-08-30 11:15 UTCPublished CVE record published
2026-06-17 05:59 UTCUpdated Record last modified

kunalnagar custom 404 pro UPGRADE

Affected: <= 3.8.1

Fixed in: newer than 3.8.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy custom-404-pro || rpm -q custom-404-pro || custom-404-pro --version

2. UPGRADE to newer than 3.8.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade custom-404-pro

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade custom-404-pro

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-2023-32740?

custom 404 pro: upgrade to newer than 3.8.1. Exact commands for each OS are on this page.

Is CVE-2023-32740 being exploited?

CVE-2023-32740 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-2023-32740 affect?

CVE-2023-32740 affects custom 404 pro. Severity is medium (CVSS 5.8). Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in Kunal Nagar Custom 404 Pro plugin <= 3.8.1 versions.

How urgent is CVE-2023-32740?

Priority 27/100. No elevated risk signals yet.

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CVE-2023-2032 CRITICAL 9.8 UPGRADE The Custom 404 Pro WordPress plugin before 3.8.1 does not properly sanitize database inputs, leading to multip

References

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