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Vulnerability record · CVE-2021-46877 · published 18 March 2023

CVE-2021-46877: Fasterxml jackson-databind allocation without limits vulnerability

Fasterxml · Jackson Databind

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.

7.5 CVSS 3.1 High EPSS 1.1% · top 35.1% CWE-770 · Allocation without limits
7.5CVSS 3.1 base score
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/FasterXML/jackson-databind/issues/3328 ExploitIssue TrackingVendor Advisory
https://groups.google.com/g/jackson-user/c/OsBsirPM_Vw Mailing ListRelease Notes
https://github.com/FasterXML/jackson-databind/issues/3328 ExploitIssue TrackingVendor Advisory
https://groups.google.com/g/jackson-user/c/OsBsirPM_Vw Mailing ListRelease Notes

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2018-14721Fasterxml jackson-databind server-side request forgery (ssrf) vulnerabilityFasterXML jackson-databind 2.x before 2.9.7 might allow remote attackers to conduct server-side request forgery (SSRF) attacks by leveraging failure …EPSS 10%9.8CVE-2019-14893Fasterxml jackson-databind information exposure vulnerabilityA flaw was discovered in FasterXML jackson-databind in all versions before 2.9.10 and 2.10.0, where it would permit polymorphic deserialization of ma…EPSS 4.1%9.8CVE-2019-14892Fasterxml jackson-databind information exposure vulnerabilityA flaw was discovered in jackson-databind in versions before 2.9.10, 2.8.11.5 and 2.6.7.3, where it would permit polymorphic deserialization of a mal…EPSS 5.6%9.8CVE-2020-9547Fasterxml jackson-databind deserialization of untrusted data vulnerabilityFasterXML jackson-databind 2.x before 2.9.10.4 mishandles the interaction between serialization gadgets and typing, related to com.ibatis.sqlmap.engi…EPSS 18%9.8CVE-2020-9548Fasterxml jackson-databind deserialization of untrusted data vulnerabilityFasterXML jackson-databind 2.x before 2.9.10.4 mishandles the interaction between serialization gadgets and typing, related to br.com.anteros.dbcp.An…EPSS 18%9.8CVE-2020-9546Fasterxml jackson-databind deserialization of untrusted data vulnerabilityFasterXML jackson-databind 2.x before 2.9.10.4 mishandles the interaction between serialization gadgets and typing, related to org.apache.hadoop.shad…EPSS 4.6%9.8CVE-2020-8840Fasterxml jackson-databind deserialization of untrusted data vulnerabilityFasterXML jackson-databind 2.0.0 through 2.9.10.2 lacks certain xbean-reflect/JNDI blocking, as demonstrated by org.apache.xbean.propertyeditor.JndiC…EPSS 27%9.8CVE-2019-20330Fasterxml jackson-databind deserialization of untrusted data vulnerabilityFasterXML jackson-databind 2.x before 2.9.10.2 lacks certain net.sf.ehcache blocking.EPSS 8.6%

Source: NIST National Vulnerability Database (record CVE-2021-46877), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.