What’s Vulnerable › Vulnerabilities

CVE-2021-27370

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-02-22 · updated 2026-06-17
• Weakness: CWE-79

Description

The Contact page in Monica 2.19.1 allows stored XSS via the Last Name field.

Affected products

• MonicaHQ: 2.19.1

References

• http://packetstormsecurity.com/files/161501/Monica-2.19.1-Cross-Site-Scripting.html
• https://github.com/monicahq/monica/issues/4888
• https://github.com/monicahq/monica/pull/4543
• https://huntr.dev/bounties/2-other-monica/
• http://packetstormsecurity.com/files/161501/Monica-2.19.1-Cross-Site-Scripting.html
• https://github.com/monicahq/monica/issues/4888
• https://github.com/monicahq/monica/pull/4543
• https://huntr.dev/bounties/2-other-monica/

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