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No exploitation reportedFix available

CVE-2022-38749

No exploitation reported by the sources we read.

  • Published2022-09-05
  • WeaknessCWE-121 · CWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2022-09-0510:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-03 15:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-38749?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-38749?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

OSV · NVD
snakeyaml
BranchAffectedFixed in
—all versionsno fix published
snakeyaml
BranchAffectedFixed in
1.18≤ 1.18.2no fix published
Debian debian linux
BranchAffectedFixed in
10.0= 10.0no fix published

5 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • ansible-collection-redhat-satelliteRed Hat:satellite:6.13::el8all versions · fixed in 0:3.9.0-2.el8sat
  • ansible-collection-redhat-satelliteRed Hat:satellite_capsule:6.13::el8all versions · fixed in 0:3.9.0-2.el8sat
  • ansible-collection-redhat-satellite_operationsRed Hat:satellite:6.13::el8all versions · fixed in 0:1.3.0-2.el8sat
  • ansible-collection-redhat-satellite_operationsRed Hat:satellite_capsule:6.13::el8all versions · fixed in 0:1.3.0-2.el8sat
  • ansible-lintRed Hat:satellite:6.13::el8all versions · fixed in 0:5.0.8-4.el8pc
  • ansible-lintRed Hat:satellite_capsule:6.13::el8all versions · fixed in 0:5.0.8-4.el8pc
  • ansible-runnerRed Hat:satellite:6.13::el8all versions · fixed in 0:2.2.1-3.el8satand 1 other package
  • ansible-runnerRed Hat:satellite_capsule:6.13::el8all versions · fixed in 0:2.2.1-3.el8sat

538 more package ranges on OSV.dev

Vendor advisories

  • RHSA-2023:7697 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: AMQ Clients 2023.Q4

  • RHSA-2023:2097 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: Satellite 6.13 Release

  • RHSA-2023:2100 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Integration Camel for Spring Boot 3.20.1 security update

  • RHSA-2023:1043 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: Red Hat Single Sign-On 7.6.2 security update on RHEL 7

  • RHSA-2023:1049 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Single Sign-On 7.6.2 security update

  • RHSA-2023:1047 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: Red Hat Single Sign-On 7.6.2 for OpenShift image security and enhancement update

5 more advisories

Full record on NVD

Fix

  1. Vendor fix Red Hat Product Security RHSA-2023:7697 · 1 productBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
  2. Vendor fix Red Hat Product Security RHSA-2023:2097 · 3 productsFor Red Hat Satellite 6.13, see the following documentation for the release. https://access.redhat.com/documentation/en-us/red_hat_satellite/6.13 The important instructions on how to upgrade are available below. https://access.redhat.com/documentation/en-us/red_hat_satellite/6.13/html/upgrading_an…
  3. Vendor fix Red Hat Product Security RHSA-2022:8876 · 1 productBefore applying the update, back up your existing installation, including all applications, configuration files, databases and database settings. The References section of this erratum contains a download link (you must log in to download the update).
  4. Vendor fix Red Hat Product Security RHSA-2022:8652 · 1 productBefore applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on. Installation instructions are available from the Fuse 7.11.1 product documentation page: https://access.redhat.com/documentation/en-us/red_ha…
  5. Vendor fix Red Hat Product Security RHSA-2022:8524 · 1 productTo install this update, do the following: 1. Download the Data Grid 8.4.0 Server patch from the customer portal[²]. 2. Back up your existing Data Grid installation. You should back up databases, configuration files, and so on. 3. Install the Data Grid 8.4.0 Server patch. 4. Restart Data Grid to e…

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.16.5known since 2026-10-23
  • NVDCVSS 3.16.5read 2026-10-23
  • CNAweakness (CWE)CWE-121known since 2026-10-23
  • NVDweakness (CWE)CWE-787read 2026-10-23
  • FIRST EPSSEPSS score2.2 %2026-11-03
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryMODERATE2022-09-15

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Published
2022-09-05
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-c4r9-r8fh-9vj2

Frequently asked questions

What is CVE-2022-38749?

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.

Is CVE-2022-38749 actively exploited?

Active exploitation of CVE-2022-38749 has not been confirmed. Its EPSS score was 2.2% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-38749?

CVE-2022-38749 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

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