CVE-2021-36867: Stored Cross-Site Scripting (XSS) vulnerability in Alexander Ustimenko's Psychological tests & quizzes plugin

Q: How do I fix CVE-2021-36867?

psychological tests \& quizzes: upgrade to newer than 0.21.19. Exact commands for each OS are on this page.

Q: Is CVE-2021-36867 being exploited?

CVE-2021-36867 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-2021-36867 affect?

CVE-2021-36867 affects psychological tests \& quizzes. Severity is medium (CVSS 5.4). Stored Cross-Site Scripting (XSS) vulnerability in Alexander Ustimenko's Psychological tests & quizzes plugin <= 0.21.19 on WordPress possible for users with contributor or higher user rights.

Q: How urgent is CVE-2021-36867?

Priority 31/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2021-36867 is a medium-severity flaw (CVSS 5.4) affecting psychological tests \& quizzes. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stored Cross-Site Scripting (XSS) vulnerability in Alexander Ustimenko's Psychological tests & quizzes plugin <= 0.21.19 on WordPress possible for users with contributor or higher user rights.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-04-26
Last modified	2026-06-17

Publisher (CNA): Patchstack · Vendor: psychological tests \& quizzes project

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

Am I affected?

Timeline

2022-04-26 19:15 UTCPublished CVE record published
2026-06-17 03:59 UTCUpdated Record last modified

psychological tests \& quizzes project psychological tests \& quizzes UPGRADE

Affected: <= 0.21.19

Fixed in: newer than 0.21.19

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy psychological-tests--quizzes || rpm -q psychological-tests--quizzes || psychological-tests--quizzes --version

2. UPGRADE to newer than 0.21.19 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade psychological-tests--quizzes

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade psychological-tests--quizzes

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-2021-36867?

psychological tests \& quizzes: upgrade to newer than 0.21.19. Exact commands for each OS are on this page.

Is CVE-2021-36867 being exploited?

CVE-2021-36867 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-2021-36867 affect?

CVE-2021-36867 affects psychological tests \& quizzes. Severity is medium (CVSS 5.4). Stored Cross-Site Scripting (XSS) vulnerability in Alexander Ustimenko's Psychological tests & quizzes plugin <= 0.21.19 on WordPress possible for users with contributor or higher user rights.

How urgent is CVE-2021-36867?

Priority 31/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2022-27854 MEDIUM 5.4 DOWNGRADE Stored Cross-Site Scripting (XSS) vulnerability in Alexander Ustimenko's Psychological tests & quizzes plugin

References

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