What’s Vulnerable › Vulnerabilities
CVE-2020-9487
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 3.0% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-10-01 · updated 2026-06-17
- Weakness: CWE-306
Description
In Apache NiFi 1.0.0 to 1.11.4, the NiFi download token (one-time password) mechanism used a fixed cache size and did not authenticate a request to create a download token, only when attempting to use the token to access the content. An unauthenticated user could repeatedly request download tokens, preventing legitimate users from requesting download tokens.
Affected products
- Apache Software Foundation Apache NiFi: from 1.0.0 through 1.11.4
References
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