DoS in SnakeYAML

published 2022-09-05 4 y ago modified 2026-09-10 1 mo ago also GHSA-c4r9-r8fh-9vj2 , EUVD-2022-6773

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 2.2%; EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits: 0; none known

Using snakeYAML to parse untrusted YAML files may be vulnerable to Denial of Service attacks (DOS). If the parser is running on user supplied input, an attacker may supply content that causes the parser to crash by stackoverflow.

Patch / fix

fixed in 2 distros 4

maven org.yaml:snakeyaml 1.31
snakeyaml SnakeYAML 1.31

debian ubuntu red hat suse

snakeyaml Debian 14, Debian 13, Debian 12 1.31-1

debian advisories DEBIAN-CVE-2022-38749

snakeyaml Ubuntu 18.04 LTS 1.23-1+deb10u1build0.18.04.1
snakeyaml Ubuntu 20.04 LTS 1.25+ds-2ubuntu0.1
snakeyaml Ubuntu 22.04 LTS 1.29-1ubuntu0.22.04.1
snakeyaml Ubuntu Pro 14.04 LTS 1.12-2ubuntu0.14.04.1~esm1
snakeyaml Ubuntu Pro 16.04 LTS 1.12-2ubuntu0.16.04.1~esm1

ubuntu advisories UBUNTU-CVE-2022-38749

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

cjson satellite capsule 6.13, satellite 6.13 1.7.14-5.el8sat
foreman satellite utils 6.13, satellite capsule 6.13, satellite 6.13 3.5.1.14-1.el8sat
katello satellite capsule 6.13, satellite 6.13 4.7.0-1.el8sat
libsolv satellite capsule 6.13, satellite 6.13 0.7.22-4.el8pc
libcomps satellite capsule 6.13, satellite 6.13 0.1.18-4.el8pc
qpid-cpp satellite capsule 6.13, satellite 6.13 1.39.0-7.el8amq
qpid-qmf satellite capsule 6.13, satellite 6.13 1.39.0-7.el8amq
candlepin satellite 6.13 4.2.13-1.el8sat

red hat advisories RHSA-2023:2097 RHSA-2023:1043 RHSA-2023:1044 RHSA-2023:1045

snakeyaml Manager Server Module 4.1 1.31-150200.12.6.1
snakeyaml SLE Module for Development Tools 15 SP4, SLE Module for Development Tools 15 SP3, openSUSE Leap 15.4 +3 more 1.31-150200.3.8.1

suse advisories SUSE-SU-2022:3560-1 SUSE-SU-2022:3397-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-38749 updated 2026-11-05 cvss 6.5

snakeyaml: Uncaught exception in org.yaml.snakeyaml.composer.Composer.composeSequenceNode

Red Hat A-MQ Clients 2 snakeyaml Red Hat OpenShift Developer Tools and Services jenkins-2-plugins
affected: no fix available
Red Hat Decision Manager 7 snakeyaml Red Hat Enterprise Linux 7 snakeyaml, snakeyaml-javadoc
affected: no fix planned “Out of support scope”
Red Hat Integration Camel K 1 snakeyaml Red Hat Integration Camel Quarkus 1 snakeyaml
affected: no fix available
Red Hat Integration Service Registry snakeyaml Red Hat JBoss Data Grid 7 snakeyaml Red Hat JBoss Data Virtualization 6 snakeyaml Red Hat JBoss Enterprise Application Platform 6 snakeyaml, jboss-on jboss-on, eap6-snakeyaml eap6-snakeyaml, jbossas-modules-eap jbossas-modules-eap, keycloak-adapter-eap6 keycloak-adapter-eap6, keycloak-adapter-sso7_2-eap6 keycloak-adapter-sso7_2-eap6, +3 more Red Hat JBoss Fuse 6 snakeyaml Red Hat JBoss Fuse Service Works 6 snakeyaml

+1 more productsfewer

Red Hat JBoss Operations Network 3 snakeyaml, jboss-on jboss-on, org.jboss.on-jboss-on-parent org.jboss.on-jboss-on-parent

affected: no fix planned “Out of support scope”
Red Hat OpenShift Application Runtimes snakeyaml
affected: no fix available
Red Hat OpenShift Container Platform 3.11 openshift3/ose-metrics-cassandra, openshift3/ose-metrics-hawkular-metrics
affected: no fix planned “Out of support scope”
Red Hat OpenShift Dev Spaces devspaces/udi-rhel8, devspaces/idea-rhel8
affected: no fix available
Red Hat Process Automation 7 snakeyaml
affected: no fix planned “Out of support scope”

show 17 more

Red Hat Satellite 6 puppetserver
affected: no fix available
Red Hat Software Collections rh-maven36-byte-buddy, rh-maven36-byte-buddy-agent, rh-maven36-byte-buddy-parent, rh-maven36-byte-buddy-javadoc, rh-maven36-byte-buddy-maven-plugin Red Hat support for Spring Boot snakeyaml
affected: no fix planned “Will not fix”
Red Hat streams for Apache Kafka snakeyaml
affected: no fix available
Red Hat Middleware Containers for OpenShift rh-sso-7/sso76-openshift-rhel8 7.6-20
fixed: vendor fix RHSA-2023:1047
Red Hat AMQ Broker 7
fixed: vendor fix RHSA-2022:8876
Red Hat AMQ Clients
fixed: vendor fix RHSA-2023:7697
Red Hat build of Eclipse Vert.x 4.3.3
fixed: vendor fix RHSA-2022:6757
Red Hat Data Grid 8.4.0
fixed: vendor fix RHSA-2022:8524
Red Hat Fuse 7.11.1
fixed: vendor fix RHSA-2022:8652
Red Hat Satellite 6.13 for RHEL 8 candlepin 4.2.13-1.el8sat, candlepin-selinux 4.2.13-1.el8sat
fixed: vendor fix RHSA-2023:2097
Red Hat Single Sign-On 7
fixed: vendor fix RHSA-2023:1049
Red Hat Single Sign-On 7.6 for RHEL 7 Server rh-sso7-keycloak 18.0.6-1.redhat_00001.1.el7sso, rh-sso7-keycloak-server 18.0.6-1.redhat_00001.1.el7sso
fixed: vendor fix RHSA-2023:1043
Red Hat Single Sign-On 7.6 for RHEL 8 rh-sso7-keycloak 18.0.6-1.redhat_00001.1.el8sso, rh-sso7-keycloak-server 18.0.6-1.redhat_00001.1.el8sso
fixed: vendor fix RHSA-2023:1044
Red Hat Single Sign-On 7.6 for RHEL 9 rh-sso7-keycloak 18.0.6-1.redhat_00001.1.el9sso, rh-sso7-keycloak-server 18.0.6-1.redhat_00001.1.el9sso
fixed: vendor fix RHSA-2023:1045
Red Hat RHINT Camel-Springboot 3.18.3.P2
fixed: vendor fix RHSA-2023:3641
Red Hat RHINT Camel-Springboot 3.20.1
fixed: vendor fix RHSA-2023:2100
Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/elasticsearch6-rhel8 Red Hat A-MQ Online snakeyaml Red Hat build of Apicurio Registry 2 snakeyaml Red Hat build of Debezium 1 snakeyaml Red Hat build of Quarkus snakeyaml Red Hat JBoss Enterprise Application Platform 7 snakeyaml
not affected: vulnerable code not present

2 more not affected in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.20% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
GitHub	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem	package	affected	fixed in
maven	org.yaml:snakeyaml	<1.31	1.31
maven	be.cylab:snakeyaml	1 listed version	no fix listed
maven	com.alipay.sofa.acts:acts-common-util	1 listed version	no fix listed
maven	io.prometheus.jmx:jmx_prometheus_httpserver	1 listed version	no fix listed
maven	io.prometheus.jmx:jmx_prometheus_httpserver_java6	<=0.18.0	no fix listed
maven	org.testifyproject.external:external-snakeyaml	<=1.0.6	no fix listed
maven	pl.droidsonroids.yaml:snakeyaml	<=1.18.2	no fix listed

Affected products

snakeyaml SnakeYAML

Classification

Weakness

CWE-121 Stack-based Buffer Overflow
CWE-787 Out-of-bounds Write

References

security.gentoo.org /glsa/202305-28
vendor-advisory, web
bugs.chromium.org /p/oss-fuzz/issues/detail?id=47024
web, third-party-advisory
bitbucket.org /snakeyaml/snakeyaml/issues/525/got-stackoverflowerror-for-many-open
web, third-party-advisory
lists.debian.org /debian-lts-announce/2022/10/msg00001.html
mailing-list, web, third-party-advisory
security.netapp.com /advisory/ntap-20240315-0010/
nvd.nist.gov /vuln/detail/CVE-2022-38749
advisory
arxiv.org /pdf/2306.05534.pdf
web
bitbucket.org /snakeyaml/snakeyaml
package
security.netapp.com /advisory/ntap-20240315-0010
web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary