What’s Vulnerable › Vulnerabilities

CVE-2021-26029: [20210309] - Core - Inadequate filtering of form contents could allow to overwrite the author field

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-04 · updated 2026-06-17

Description

An issue was discovered in Joomla! 1.6.0 through 3.9.24. Inadequate filtering of form contents could allow to overwrite the author field.

Affected products

• Joomla!: from 1.6.0 before 3.9.25 — fixed in 3.9.25

How to fix

Upgrade to a fixed version: Joomla! 3.9.25. Check the vendor advisory for mitigations.

References

• https://developer.joomla.org/security-centre/849-20210309-core-inadequate-filtering-of-form-contents-could-allow-to-overwrite-the-author-field.html
• https://developer.joomla.org/security-centre/849-20210309-core-inadequate-filtering-of-form-contents-could-allow-to-overwrite-the-author-field.html

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