CVE-2021-44116: Cross Site Scripting (XSS) vulnerability exits in Anchor CMS <=0.12.7 in posts.php

Q: How do I fix CVE-2021-44116?

anchor cms: upgrade to newer than 0.12.7. Exact commands for each OS are on this page.

Q: Is CVE-2021-44116 being exploited?

CVE-2021-44116 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-2021-44116 affect?

CVE-2021-44116 affects anchor cms. Severity is medium (CVSS 6.1). Cross Site Scripting (XSS) vulnerability exits in Anchor CMS <=0.12.7 in posts.php. Attackers can use the posts column to upload the title and content containing malicious code to achieve the purpose of obtaining the administrator cookie, t

Q: How urgent is CVE-2021-44116?

Priority 40/100. Public exploit reference

This month

MEDIUM 6.1UPGRADE

CVE-2021-44116 is a medium-severity flaw (CVSS 6.1) affecting anchor cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross Site Scripting (XSS) vulnerability exits in Anchor CMS <=0.12.7 in posts.php. Attackers can use the posts column to upload the title and content containing malicious code to achieve the purpose of obtaining the administrator cookie, thereby achieving other malicious operations.

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	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-12-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: anchorcms

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

Am I affected?

Timeline

2021-12-15 22:15 UTCPublished CVE record published
2026-06-17 04:11 UTCUpdated Record last modified

anchorcms anchor cms UPGRADE

Affected: <= 0.12.7

Fixed in: newer than 0.12.7

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy anchor-cms || rpm -q anchor-cms || anchor-cms --version

2. UPGRADE to newer than 0.12.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade anchor-cms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade anchor-cms

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-2021-44116?

anchor cms: upgrade to newer than 0.12.7. Exact commands for each OS are on this page.

Is CVE-2021-44116 being exploited?

CVE-2021-44116 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-2021-44116 affect?

CVE-2021-44116 affects anchor cms. Severity is medium (CVSS 6.1). Cross Site Scripting (XSS) vulnerability exits in Anchor CMS <=0.12.7 in posts.php. Attackers can use the posts column to upload the title and content containing malicious code to achieve the purpose of obtaining the administrator cookie, t

How urgent is CVE-2021-44116?

Priority 40/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-46041 MEDIUM 5.4 DOWNGRADE A stored cross-site scripting (XSS) vulnerability in Anchor CMS v0.12.7 allows attackers to inject malicious J
CVE-2024-29499 HIGH 7.4 DOWNGRADE Anchor CMS v0.12.7 was discovered to contain a Cross-Site Request Forgery (CSRF) via /anchor/admin/users/delet
CVE-2024-29338 LOW 2.4 DOWNGRADE Anchor CMS v0.12.7 was discovered to contain a Cross-Site Request Forgery (CSRF) via /anchor/admin/categories/
CVE-2022-25576 MEDIUM 4.5 DOWNGRADE Anchor CMS v0.12.7 was discovered to contain a Cross-Site Request Forgery (CSRF) via the component anchor/rout
CVE-2021-46253 MEDIUM 5.4 DOWNGRADE A cross-site scripting (XSS) vulnerability in the Create Post function of Anchor CMS v0.12.7 allows attackers

References

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