CVE-2021-37366: CTparental before 4.45.03 is vulnerable to cross-site request forgery (CSRF) in the CTparental admin panel

Q: How do I fix CVE-2021-37366?

ctparental: upgrade to 4.45.03. Exact commands for each OS are on this page.

Q: Is CVE-2021-37366 being exploited?

CVE-2021-37366 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-2021-37366 affect?

CVE-2021-37366 affects ctparental. Severity is high (CVSS 8.8). CTparental before 4.45.03 is vulnerable to cross-site request forgery (CSRF) in the CTparental admin panel. By combining CSRF with XSS, an attacker can trick the administrator into clicking a link that cancels the filtering for all standard

This month

HIGH 8.8UPGRADE

CVE-2021-37366 is a high-severity flaw (CVSS 8.8) affecting ctparental. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

CTparental before 4.45.03 is vulnerable to cross-site request forgery (CSRF) in the CTparental admin panel. By combining CSRF with XSS, an attacker can trick the administrator into clicking a link that cancels the filtering for all standard users.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-352
Published	2021-08-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ctparental project

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

Am I affected?

Timeline

2021-08-10 17:15 UTCPublished CVE record published
2026-06-17 04:00 UTCUpdated Record last modified

ctparental project ctparental UPGRADE

Affected: < 4.45.03

Fixed in: 4.45.03

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 4.45.03 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ctparental

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-2021-37366?

ctparental: upgrade to 4.45.03. Exact commands for each OS are on this page.

Is CVE-2021-37366 being exploited?

CVE-2021-37366 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-2021-37366 affect?

CVE-2021-37366 affects ctparental. Severity is high (CVSS 8.8). CTparental before 4.45.03 is vulnerable to cross-site request forgery (CSRF) in the CTparental admin panel. By combining CSRF with XSS, an attacker can trick the administrator into clicking a link that cancels the filtering for all standard

How urgent is CVE-2021-37366?

Priority 42/100. High severity

Related CVEs

CVE-2021-37367 HIGH 7.8 UPGRADE CTparental before 4.45.07 is affected by a code execution vulnerability in the CTparental admin panel
CVE-2021-37365 MEDIUM 6.1 UPGRADE CTparental before 4.45.03 is vulnerable to cross-site scripting (XSS) in the CTparental admin panel

References

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