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VulnerabilityPublished

CVE-2026-95155: jackson-mapper-asl · Uncontrolled Recursion

Affects jackson-mapper-aslSource CVE Database V5

0

Not known to be exploited · CVSS 7.5 High.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 27% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Mavencom.fasterxml.jackson/jackson-mapper-aslpkg:maven/com.fasterxml.jackson/jackson-mapper-aslOther threatsAffected
  • 1.8.3 – 1.9.13
5 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until a fix is available, applications should implement input validation to limit JSON nesting depth or use safer deserialization configurations to mitigate the risk of denial of service.

Description

A denial of service vulnerability exists in FasterXML Jackson 1.x, specifically in jackson-mapper-asl versions 1.8.3, 1.9.2, 1.9.11, 1.9.12, and 1.9.13. The vulnerability is triggered by supplying deeply nested JSON input to an application that deserializes untrusted JSON using ObjectMapper.readValue. This can cause the application to become unresponsive or crash.

References

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