What’s Vulnerable › Vulnerabilities

CVE-2021-21677

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-31 · updated 2026-06-17
• Weakness: CWE-502

Description

Jenkins Code Coverage API Plugin 1.4.0 and earlier does not apply Jenkins JEP-200 deserialization protection to Java objects it deserializes from disk, resulting in a remote code execution vulnerability.

Affected products

• Jenkins project Jenkins Code Coverage API Plugin: through 1.4.0

References

• http://www.openwall.com/lists/oss-security/2021/08/31/1
• https://www.jenkins.io/security/advisory/2021-08-31/#SECURITY-2376
• http://www.openwall.com/lists/oss-security/2021/08/31/1
• https://www.jenkins.io/security/advisory/2021-08-31/#SECURITY-2376

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