VulnerabilityModified

CVE-2021-26030

Inadequate escaping allowed XSS attacks using the logo parameter of the default templates on error page

MEDIUM 6.1EPSS 82.3%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 82.3%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

Description

An issue was discovered in Joomla! 3.0.0 through 3.9.25. Inadequate escaping allowed XSS attacks using the logo parameter of the default templates on error page

CVSS 3.1: 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 82.26% probability · 100th percentile
CISA KEV: Not listed
Weakness: CWE-79
Affected: joomla/joomla\!
Source: security@joomla.org

References

https://developer.joomla.org/security-centre/850-20210401-core-escape-xss-in-logo-parameter-error-pages.htmlVendor Advisory
https://developer.joomla.org/security-centre/850-20210401-core-escape-xss-in-logo-parameter-error-pages.htmlVendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.