CVE-2021-24644: The Images to WebP WordPress plugin before 1.9 does not validate or sanitise the tab parameter before passing

Q: How do I fix CVE-2021-24644?

images to webp: upgrade to 1.9. Exact commands for each OS are on this page.

Q: Is CVE-2021-24644 being exploited?

CVE-2021-24644 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-2021-24644 affect?

CVE-2021-24644 affects images to webp. Severity is high (CVSS 7.5). The Images to WebP WordPress plugin before 1.9 does not validate or sanitise the tab parameter before passing it to the include() function, which could lead to a Local File Inclusion issue

Q: How urgent is CVE-2021-24644?

Priority 60/100. High severity; EPSS top 7%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2021-24644 is a high-severity flaw (CVSS 7.5) affecting images to webp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Images to WebP WordPress plugin before 1.9 does not validate or sanitise the tab parameter before passing it to the include() function, which could lead to a Local File Inclusion issue

Why this priority

High severity
EPSS top 7%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	5.9% (top 7%)
CISA exploited list	No
Weakness	CWE-22
Published	2021-11-23
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: imagestowebp project

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

Am I affected?

Timeline

2021-11-23 20:15 UTCPublished CVE record published
2026-06-17 03:40 UTCUpdated Record last modified

imagestowebp project images to webp UPGRADE

Affected: < 1.9

Fixed in: 1.9

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy images-to-webp || rpm -q images-to-webp || images-to-webp --version

2. UPGRADE to 1.9 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade images-to-webp

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade images-to-webp

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: Images to WebP < 1.9 - Authenticated Local File Inclusion

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-2021-24644?

images to webp: upgrade to 1.9. Exact commands for each OS are on this page.

Is CVE-2021-24644 being exploited?

CVE-2021-24644 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-2021-24644 affect?

CVE-2021-24644 affects images to webp. Severity is high (CVSS 7.5). The Images to WebP WordPress plugin before 1.9 does not validate or sanitise the tab parameter before passing it to the include() function, which could lead to a Local File Inclusion issue

How urgent is CVE-2021-24644?

Priority 60/100. High severity; EPSS top 7%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2021-24641 HIGH 8.1 UPGRADE The Images to WebP WordPress plugin before 1.9 does not have CSRF checks in place when performing some adminis

References

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