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CVE-2018-1000210

25
FAUCET Score

CVE-2018-1000210 is an Insecure Direct Object Reference vulnerability in YamlDotNet versions 4.3.2 and earlier. It allows for code execution by deserializing user-controlled types when parsing specially-crafted YAML files. This vulnerability has a CVSS score of 7.8 (High), indicating a significant impact with high confidentiality, integrity, and availability risks. Exploitation requires user interaction, as the victim must parse a malicious YAML file. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage. The vulnerability was fixed in YamlDotNet version 5.0.0.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.3.2CPE matchmatch criteria
cpe:2.3:a:yamldotnet_project:yamldotnet:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.47%
Probability of exploitation in next 30 days
EPSS Percentile
71.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0147 is in the 69th percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

nugetpatch availablevia ghsa
Product: YamlDotNetFixed in: 5.0.0
nugetpatch availablevia ghsa
Product: YamlDotNet.SignedFixed in: 5.0.0

Vendor Advisories (1)

nugetGHSA-rpch-cqj9-h65rhigh

High severity vulnerability that affects YamlDotNet and YamlDotNet.Signed

Oct 16, 2018

References

github.com / aaubry/YamlDotNet/blob/f96b7cc40a0498f8bafdeb49df3aa23aa2c60993/YamlDotNet/Serialization/NodeTypeResolvers/TypeNameInTagNodeTypeResolver.cs
Third Party Advisory
github.com / aaubry/YamlDotNet
Third Party Advisory