What’s Vulnerable › Vulnerabilities

CVE-2021-21658

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-05-25 · updated 2026-06-17

Description

Jenkins Nuget Plugin 1.0 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.

Affected products

• Jenkins project Jenkins Nuget Plugin: through 1.0

References

• http://www.openwall.com/lists/oss-security/2021/05/25/3
• https://www.jenkins.io/security/advisory/2021-05-25/#SECURITY-2340
• http://www.openwall.com/lists/oss-security/2021/05/25/3
• https://www.jenkins.io/security/advisory/2021-05-25/#SECURITY-2340

Get alerted when CVE-2021-21658 or the next vulnerability affects your stack