What’s Vulnerable › Vulnerabilities

CVE-2021-30185

• Severity: high (CVSS 7.5 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: 2021-04-07 · updated 2026-06-17

Description

CERN Indico before 2.3.4 can use an attacker-supplied Host header in a password reset link.

Affected products

• indico: before 2.3.4 — fixed in 2.3.4

How to fix

Upgrade to a fixed version: indico 2.3.4. Check the vendor advisory for mitigations.

References

• https://github.com/indico/indico/releases/tag/v2.3.4
• https://www.shorebreaksecurity.com/blog/
• https://github.com/indico/indico/releases/tag/v2.3.4
• https://www.shorebreaksecurity.com/blog/

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