What’s Vulnerable › Vulnerabilities

CVE-2021-33840

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-06-04 · updated 2026-06-17
• Weakness: CWE-345

Description

The server in Luca through 1.1.14 allows remote attackers to cause a denial of service (insertion of many fake records related to COVID-19) because Phone Number data lacks a digital signature.

Affected products

• Luca-App Luca: through 1.1.14

References

• https://gitlab.com/lucaapp/web/-/issues/1#note_560963608
• https://luca-app.de/securityoverview/processes/guest_registration.html#verifying-the-contact-data
• https://gitlab.com/lucaapp/web/-/issues/1#note_560963608
• https://luca-app.de/securityoverview/processes/guest_registration.html#verifying-the-contact-data

Get alerted when CVE-2021-33840 or the next vulnerability affects your stack