Detections
Analytics
Amazon Linux 2 : jackson (ALAS-2026-4098)
high Nessus Plugin ID 379880
Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
The version of jackson installed on the remote host is prior to 1.9.4-7. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-4098 advisory.jackson-core contains core low-level incremental (streaming) parser and generator abstractions used by Jackson Data Processor. In versions prior to 2.15.0, if a user parses an input file and it has deeply nested data, Jackson could end up throwing a StackoverflowError if the depth is particularly large.
jackson-core 2.15.0 contains a configurable limit for how deep Jackson will traverse in an input document, defaulting to an allowable depth of 1000. jackson-core will throw a StreamConstraintsException if the limit is reached. jackson-databind also benefits from this change because it uses jackson-core to parse JSON inputs. As a workaround, users should avoid parsing input files from untrusted sources.
(CVE-2025-52999)
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. (CVE-2026-95155)
Tenable has extracted the preceding description block directly from the tested product security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Run 'yum update jackson' or or 'yum update --advisory ALAS2-2026-4098' to update your system.See Also
https://alas.aws.amazon.com//AL2/ALAS2-2026-4098.html
https://alas.aws.amazon.com/faqs.html
Plugin Details
Severity: High
ID: 379880
File Name: al2_ALAS-2026-4098.nasl
Version: 1.1
Type: Local
Agent: unix
Published: 11/12/2026
Updated: 11/12/2026
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3
Percentile: 23.73
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.1
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2026-95155
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS v4
Risk Factor: High
Base Score: 8.7
Threat Score: 7.7
Threat Vector: CVSS:4.0/E:P
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS Score Source: CVE-2025-52999
Vulnerability Information
CPE: cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:jackson-javadoc, p-cpe:/a:amazon:linux:jackson
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 11/12/2026
Vulnerability Publication Date: 6/25/2025
Reference Information
CVE: CVE-2025-52999, CVE-2026-95155