What’s Vulnerable › Vulnerabilities

CVE-2021-3539: EspoCRM Avatar Persistent XSS

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-04 · updated 2026-06-17
• Weakness: CWE-79

Description

EspoCRM 6.1.6 and prior suffers from a persistent (type II) cross-site scripting (XSS) vulnerability in processing user-supplied avatar images. This issue was fixed in version 6.1.7 of the product.

Affected products

• espocrm: through 6.1.6

References

• https://www.rapid7.com/blog/post/2021/07/27/multiple-open-source-web-app-vulnerabilities-fixed/
• https://www.rapid7.com/blog/post/2021/07/27/multiple-open-source-web-app-vulnerabilities-fixed/

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