CVE-2021-24210: There is an open redirect in the PhastPress WordPress plugin before 1.111 that allows an attacker to malform a

Q: How do I fix CVE-2021-24210?

phastpress: upgrade to 1.111. Exact commands for each OS are on this page.

Q: Is CVE-2021-24210 being exploited?

CVE-2021-24210 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-2021-24210 affect?

CVE-2021-24210 affects phastpress. Severity is medium (CVSS 6.1). There is an open redirect in the PhastPress WordPress plugin before 1.111 that allows an attacker to malform a request to a page with the plugin and then redirect the victim to a malicious page. There is also a support comment from another

Q: How urgent is CVE-2021-24210?

Priority 48/100. Public exploit reference

This month

MEDIUM 6.1UPGRADE

CVE-2021-24210 is a medium-severity flaw (CVSS 6.1) affecting phastpress. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

There is an open redirect in the PhastPress WordPress plugin before 1.111 that allows an attacker to malform a request to a page with the plugin and then redirect the victim to a malicious page. There is also a support comment from another user one year ago (https://wordpress.org/support/topic/phast-php-used-for-remote-fetch/) that says that the php involved in the request only go to whitelisted pages but it's possible to redirect the victim to a

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	3.1% (top 12%)
CISA exploited list	No
Weakness	CWE-601
Published	2021-04-05
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: kiboit

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

Am I affected?

Timeline

2021-04-05 19:15 UTCPublished CVE record published
2026-06-17 03:39 UTCUpdated Record last modified

kiboit phastpress UPGRADE

Affected: < 1.111

Fixed in: 1.111

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy phastpress || rpm -q phastpress || phastpress --version

2. UPGRADE to 1.111 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade phastpress

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade phastpress

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 PhastPress <1.111 - 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-2021-24210?

phastpress: upgrade to 1.111. Exact commands for each OS are on this page.

Is CVE-2021-24210 being exploited?

CVE-2021-24210 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-2021-24210 affect?

CVE-2021-24210 affects phastpress. Severity is medium (CVSS 6.1). There is an open redirect in the PhastPress WordPress plugin before 1.111 that allows an attacker to malform a request to a page with the plugin and then redirect the victim to a malicious page. There is also a support comment from another

How urgent is CVE-2021-24210?

Priority 48/100. Public exploit reference

Software pages

WordPress vulnerabilities · PHP vulnerabilities

References

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