What’s Vulnerable › Vulnerabilities

CVE-2021-46877

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-03-18 · updated 2026-06-17
• Weakness: CWE-770

Description

jackson-databind 2.10.x through 2.12.x before 2.12.6 and 2.13.x before 2.13.1 allows attackers to cause a denial of service (2 GB transient heap usage per read) in uncommon situations involving JsonNode JDK serialization.

Affected products

• FasterXML jackson-databind: from 2.10.0 before 2.12.6; 2.13.0, 2.13.0-rc1, 2.13.0-rc2 — fixed in 2.12.6

How to fix

Upgrade to a fixed version: FasterXML jackson-databind 2.12.6. Check the vendor advisory for mitigations.

References

• https://github.com/FasterXML/jackson-databind/issues/3328
• https://groups.google.com/g/jackson-user/c/OsBsirPM_Vw
• https://github.com/FasterXML/jackson-databind/issues/3328
• https://groups.google.com/g/jackson-user/c/OsBsirPM_Vw

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