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🛡️ CVE-2020-36518 — jackson-databind

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-787 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Deeply nested json in jackson-databind

jackson-databind is a data-binding package for the Jackson Data Processor. jackson-databind allows a Java stack overflow exception and denial of service via a large depth of nested objects.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, 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 none, integrity none, availability high.

CVSS metrics in full

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

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • 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: None.
  • Integrity impact: None.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2020-36518 is classified as CWE-787: Out-of-bounds Write. Data is written past the end or before the start of a buffer, corrupting whatever is stored there.

Affected software

CVE-2020-36518 is recorded against 1 package.

  • com.fasterxml.jackson.core:jackson-databind (fixed in 2.12.6.1)

Timeline and source

Published on 12 March 2022 and last revised on 4 February 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Package)
github.com (Web)
github.com (Web)
lists.debian.org (Web)
lists.debian.org (Web)
security.netapp.com (Web)
www.debian.org (Web)
www.oracle.com (Web)
www.oracle.com (Web)

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:

Same weakness in other software

These advisories are the same class of weakness (CWE-787: Out-of-bounds Write) in other software:

CVE-2020-36518 on other distributions

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

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-787
Public Exploit ✅ No
Source OSV
Published 2022-03-12
Updated 2026-08-20
Modified 2026-02-04
Fix URL N/A

Affected Packages

Software From version Fixed in
com.fasterxml.jackson.core:jackson-databind — 2.12.6.1

References

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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