CVE-2022-38751 | DoS in SnakeYAML

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.

Published: 2022-09-05 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-38751 is rated Moderate Risk (44.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.30%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-38751

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-25 0.17% 0.30% +0.13%
2 2025-11-21 1.17% 0.17% -1.01%
3 2025-11-18 — 1.17% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-38751

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]

Weakness enumeration for CVE-2022-38751

GitHub Security Advisory for CVE-2022-38751

GHSA-98wm-3w3q-mw94 · Severity: medium · Ecosystem: maven — snakeYAML before 1.31 vulnerable to Denial of Service due to Out-of-bounds Write

OS Trackers for CVE-2022-38751

vendor priority summary link
debian not yet assigned CVE-2022-38751 not yet assigned priority: Debian including 1 source packages (snakeyaml), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2022-38751
gentoo low CVE-2022-38751: 1 GLSA(s) (202305-28), 1 atom(s) (dev-java/snakeyaml); latest impact low. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2022-38751
redhat medium — https://access.redhat.com/security/cve/CVE-2022-38751
suse high CVE-2022-38751 severity important: SUSE including 241 source package names (3.3.2-2.3:snakeyaml-1.31-150200.3.8.1, 5.0.0-beta1.2.122:snakeyaml-1.31-150200.3.8.1, …), 267 product×package rows across 33 product lines (Container containers/apache-pulsar, Container suse/manager/5.0/x86_64/server, … (33 product lines)): Known Affected 231, Fixed 36. https://www.suse.com/security/cve/CVE-2022-38751/
ubuntu medium CVE-2022-38751 medium priority: Ubuntu including 1 source packages (snakeyaml), 8 status rows across 8 suites (bionic, focal, jammy, kinetic, lunar, trusty, upstream, xenial): released 6, needs-triage 1, not-affected 1. https://ubuntu.com/security/CVE-2022-38751

Affected software / configurations for CVE-2022-38751

Vendor Product Version Raw CPE
snakeyaml_project snakeyaml < 1.31 cpe:2.3:a:snakeyaml_project:snakeyaml:*:*:*:*:*:*:*:*
debian debian_linux 10.0 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

References for CVE-2022-38751

cvelogic Threat Intelligence