---
id: CVE-2026-95155
title: >-
  FasterXML Jackson 1.x, confirmed in jackson-mapper-asl versions 1.8.3, 1.9.2,
  1.9.11, 1.9.12, and 1.9.13, allows attackers to cause a denial of service by
  supplying deeply nested JSON input to an application that deserializes
  untrusted J…
summary: >-
  FasterXML Jackson 1.x, confirmed in jackson-mapper-asl versions 1.8.3, 1.9.2,
  1.9.11, 1.9.12, and 1.9.13, allows attackers to cause a denial of service by
  supplying deeply nested JSON input to an application that deserializes
  untrusted J…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-674
published: '2026-10-15'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T19:56:15.773'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-95155'
references:
  - url: 'https://github.com/FasterXML/jackson-1'
    label: cve@mitre.org
  - url: 'https://github.com/FasterXML/jackson-1/issues/11'
    label: cve@mitre.org
tags:
  - nvd
  - cve.org
epss: 0.00344
epssPercentile: 0.27738
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-15T19:56:17.390997Z'
ingestedAt: '2026-10-15T16:13:11.630Z'
---

## Overview

FasterXML Jackson 1.x, confirmed in jackson-mapper-asl versions 1.8.3, 1.9.2, 1.9.11, 1.9.12, and 1.9.13, allows attackers to cause a denial of service by supplying deeply nested JSON input to an application that deserializes untrusted JSON using ObjectMapper.readValue.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.