CVE-2024-11277: The 404 Solution plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via URLs in all versions

Q: How do I fix CVE-2024-11277?

404 solution: upgrade to 2.35.20. Exact commands for each OS are on this page.

Q: Is CVE-2024-11277 being exploited?

CVE-2024-11277 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-2024-11277 affect?

CVE-2024-11277 affects 404 solution. Severity is medium (CVSS 6.1). The 404 Solution plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via URLs in all versions up to, and including, 2.35.19 due to insufficient input sanitization and output escaping. This makes it possible for unauthentica

Q: How urgent is CVE-2024-11277?

Priority 28/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2024-11277 is a medium-severity flaw (CVSS 6.1) affecting 404 solution. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The 404 Solution plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via URLs in all versions up to, and including, 2.35.19 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 74%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-11-20
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: ajexperience

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

Am I affected?

Timeline

2024-11-20 07:15 UTCPublished CVE record published
2026-06-17 06:57 UTCUpdated Record last modified

ajexperience 404 solution UPGRADE

Affected: < 2.35.20

Fixed in: 2.35.20

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy 404-solution || rpm -q 404-solution || 404-solution --version

2. UPGRADE to 2.35.20 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade 404-solution

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade 404-solution

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-2024-11277?

404 solution: upgrade to 2.35.20. Exact commands for each OS are on this page.

Is CVE-2024-11277 being exploited?

CVE-2024-11277 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-2024-11277 affect?

CVE-2024-11277 affects 404 solution. Severity is medium (CVSS 6.1). The 404 Solution plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via URLs in all versions up to, and including, 2.35.19 due to insufficient input sanitization and output escaping. This makes it possible for unauthentica

How urgent is CVE-2024-11277?

Priority 28/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

References

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