CVE-2021-25074: The WebP Converter for Media WordPress plugin before 4.0.3 contains a file (passthru.php) which does not valid

Q: How do I fix CVE-2021-25074?

webp converter for media: upgrade to 4.0.3. Exact commands for each OS are on this page.

Q: Is CVE-2021-25074 being exploited?

CVE-2021-25074 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-2021-25074 affect?

CVE-2021-25074 affects webp converter for media. Severity is medium (CVSS 6.1). The WebP Converter for Media WordPress plugin before 4.0.3 contains a file (passthru.php) which does not validate the src parameter before redirecting the user to it, leading to an Open Redirect issue

Q: How urgent is CVE-2021-25074?

Priority 47/100. Public exploit reference

This month

MEDIUM 6.1UPGRADE

CVE-2021-25074 is a medium-severity flaw (CVSS 6.1) affecting webp converter for media. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The WebP Converter for Media WordPress plugin before 4.0.3 contains a file (passthru.php) which does not validate the src parameter before redirecting the user to it, leading to an Open Redirect issue

Why this priority

Public exploit reference

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	2.2% (top 18%)
CISA exploited list	No
Weakness	CWE-601
Published	2022-01-24
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: webp converter for media project

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

Am I affected?

Timeline

2022-01-24 08:15 UTCPublished CVE record published
2026-06-17 03:41 UTCUpdated Record last modified

webp converter for media project webp converter for media UPGRADE

Affected: < 4.0.3

Fixed in: 4.0.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy webp-converter-for-media || rpm -q webp-converter-for-media || webp-converter-for-media --version

2. UPGRADE to 4.0.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade webp-converter-for-media

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade webp-converter-for-media

Note

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

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: WordPress WebP Converter for Media < 4.0.3 - Unauthenticated Open Redirect

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-2021-25074?

webp converter for media: upgrade to 4.0.3. Exact commands for each OS are on this page.

Is CVE-2021-25074 being exploited?

CVE-2021-25074 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-2021-25074 affect?

CVE-2021-25074 affects webp converter for media. Severity is medium (CVSS 6.1). The WebP Converter for Media WordPress plugin before 4.0.3 contains a file (passthru.php) which does not validate the src parameter before redirecting the user to it, leading to an Open Redirect issue

How urgent is CVE-2021-25074?

Priority 47/100. Public exploit reference

Software pages

WordPress vulnerabilities · PHP vulnerabilities

References

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