CVE-2024-12047: The WP Compress – Instant Performance & Speed Optimization plugin for WordPress is vulnerable to Reflected Cro

Q: How do I fix CVE-2024-12047?

wp compress: upgrade to 6.30.04. Exact commands for each OS are on this page.

Q: Is CVE-2024-12047 being exploited?

CVE-2024-12047 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-2024-12047 affect?

CVE-2024-12047 affects wp compress. Severity is medium (CVSS 6.1). The WP Compress – Instant Performance & Speed Optimization plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘custom_server’ parameter in all versions up to, and including, 6.30.03 due to insufficient input saniti

Q: How urgent is CVE-2024-12047?

Priority 29/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2024-12047 is a medium-severity flaw (CVSS 6.1) affecting wp compress. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The WP Compress – Instant Performance & Speed Optimization plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘custom_server’ parameter in all versions up to, and including, 6.30.03 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 cli

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	0.4% (top 69%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-01-04
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: wpcompress

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

Am I affected?

Timeline

2025-01-04 08:15 UTCPublished CVE record published
2026-06-17 06:58 UTCUpdated Record last modified

wpcompress wp compress UPGRADE

Affected: < 6.30.04

Fixed in: 6.30.04

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wp-compress || rpm -q wp-compress || wp-compress --version

2. UPGRADE to 6.30.04 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wp-compress

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wp-compress

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-2024-12047?

wp compress: upgrade to 6.30.04. Exact commands for each OS are on this page.

Is CVE-2024-12047 being exploited?

CVE-2024-12047 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-2024-12047 affect?

CVE-2024-12047 affects wp compress. Severity is medium (CVSS 6.1). The WP Compress – Instant Performance & Speed Optimization plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘custom_server’ parameter in all versions up to, and including, 6.30.03 due to insufficient input saniti

How urgent is CVE-2024-12047?

Priority 29/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

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References

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