🛡️ CVE-2020-36187 on Maven (Root.io) — jackson-databind

Distribution advisory

This page covers CVE-2020-36187 as tracked by Maven (Root.io), for the package jackson-databind. The fix is available in version 2.3.1-aikido.2; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high. (rating taken from the base CVE record.)

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
• Privileges required: None — an unauthenticated stranger can try it.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: High — total loss, or loss the attacker controls.
• Integrity impact: High — total loss, or loss the attacker controls.
• Availability impact: High — total loss, or loss the attacker controls.

Weakness class

ROOT-APP-MAVEN-CVE-2020-36187 is classified as CWE-502: Deserialization of Untrusted Data. Serialised data from an untrusted source is reconstructed into objects, which can trigger code during the process.

Affected software

ROOT-APP-MAVEN-CVE-2020-36187 is recorded against 2 packages.

• com.fasterxml.jackson.core:jackson-databind (fixed in 2.3.1-aikido.2)
• io.root.com.fasterxml.jackson.core:jackson-databind (fixed in 2.3.1-root.io.2)

Timeline and source

Published on 20 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

Other advisories for this package

com.fasterxml.jackson.core:jackson-databind has other advisories on record. If you are patching this one, these are worth checking on the same host:

• ROOT-APP-MAVEN-CVE-2020-8840 (9.5 Critical, published 20 Aug 2026)
• ROOT-APP-MAVEN-CVE-2019-17267 (9.5 Critical, published 20 Aug 2026)
• ROOT-APP-MAVEN-CVE-2018-7489 (9.5 Critical, published 20 Aug 2026)
• ROOT-APP-MAVEN-CVE-2019-16943 (9.5 Critical, published 20 Aug 2026)
• ROOT-APP-MAVEN-CVE-2020-36182 (8.0 High, published 20 Aug 2026)
• ROOT-APP-MAVEN-CVE-2019-16942 (9.5 Critical, published 20 Aug 2026)
• ROOT-APP-MAVEN-CVE-2020-36181 (8.0 High, published 20 Aug 2026)
• ROOT-APP-MAVEN-CVE-2020-10673 (8.0 High, published 20 Aug 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-502: Deserialization of Untrusted Data) in other software:

• CVE-2026-59940 (9.8 Critical, published 18 Aug 2026)
• CVE-2026-47058 (8.0 High, published 17 Aug 2026)

CVE-2020-36187 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Affected Packages

References