CVE-2018-11307 Deserialization of Untrusted Data in jackson-databind
Attackers can exploit unsafe deserialization in Jackson with iBatis gadgets to exfiltrate data or execute code if default typing is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-11307?
CVE-2018-11307 is a critical unsafe deserialization vulnerability in Fasterxml Jackson-Databind, published on 9 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in FasterXML jackson-databind 2.0.0 through 2.9.5. Use of Jackson default typing along with a gadget class from iBatis allows exfiltration of content. Fixed in 2.7.9.4, 2.8.11.2, and 2.9.6.
Weakness: CWE-502
Which versions are affected by CVE-2018-11307?
6 open source packages ship an affected version, including com.fasterxml.jackson.core:jackson-databind. It affects 7 products.
| Package | Affected | Fixed in |
|---|---|---|
com.fasterxml.jackson.core:jackson-databind Maven | From 2.0.0 | 2.7.9.4 |
com.fasterxml.jackson.core:jackson-databind Maven | From 2.0.0 | 2.7.9.4 |
com.fasterxml.jackson.core:jackson-databind Maven | From 2.8.0 | 2.8.11.2 |
com.fasterxml.jackson.core:jackson-databind Maven | From 2.8.0 | 2.8.11.2 |
com.fasterxml.jackson.core:jackson-databind Maven | From 2.9.0 | 2.9.6 |
com.fasterxml.jackson.core:jackson-databind Maven | From 2.9.0 | 2.9.6 |
Products include Fasterxml Jackson-Databind, Oracle Clusterware, Oracle Communications Instant Messaging Server, Oracle Global Lifecycle Management Opatch, Oracle Retail Customer Management and Segmentation Foundation, Oracle Utilities Advanced Spatial and Operational Analytics and 1 more.
How do I fix CVE-2018-11307?
Upgrade com.fasterxml.jackson.core:jackson-databind to a fixed version for your release line: 2.7.9.4, 2.8.11.2 or 2.9.6.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2018-11307 being exploited?
There is no known exploitation of CVE-2018-11307 in the wild and no public exploit code.
Other vulnerabilities in Fasterxml Jackson-Databind
- CVE-2026-54512 jackson-databind: PolymorphicTypeValidator bypass via generic type parameters allows arbitrary class instantiation
- CVE-2026-54513 jackson-databind: Array subtype allowlist bypass in BasicPolymorphicTypeValidator (allowIfSubTypeIsArray)
- CVE-2020-14060 Deserialization of untrusted data in Jackson Databind
- CVE-2021-46877 jackson-databind possible Denial of Service if using JDK serialization to serialize JsonNode
- CVE-2019-14893 Polymorphic deserialization of malicious object in jackson-databind
Sources
Also known as CLEANSTART-2026-EL43307, DEBIAN-CVE-2018-11307, GHSA-qr7j-h6gg-jmgc, ROOT-APP-MAVEN-CVE-2018-11307, UBUNTU-CVE-2018-11307.