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CVE-2018-1000210

High severity vulnerability that affects YamlDotNet and YamlDotNet.Signed

7.8 HighFix available

YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line "currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

1.47%Up 0.4 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 7.8

YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line "currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.

Record
CVE-2018-1000210
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-502, CWE-639
Updated
2026-11-02
CVE List No score

YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line "currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.

Record
CVE-2018-1000210
Updated
2026-11-02
EUVDEUVD-2018-0686 No score

YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line "currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.

Record
EUVD-2018-0686
Updated
2026-11-03
GitHub AdvisoriesGHSA-rpch-cqj9-h65r 7.8

High severity vulnerability that affects YamlDotNet and YamlDotNet.Signed

YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line "currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.

Record
GHSA-rpch-cqj9-h65r
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-502, CWE-639
Updated
2026-11-02
OSV 7.8

YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line "currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.

Record
CVE-2018-1000210
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-rpch-cqj9-h65r 7.8

High severity vulnerability that affects YamlDotNet and YamlDotNet.Signed

YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line "currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.

Record
GHSA-rpch-cqj9-h65r
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-502, CWE-639
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
YamlDotNet
NuGet
through 4.3.2
5.0.0
YamlDotNet.Signed
NuGet
through 4.3.2
5.0.0
YamlDotNet
NuGet
before 5.0.0, plus listed versions
2.3.0-rc3.0.03.1.03.1.13.2.0
Show 45 moreShow less
3.2.13.2.23.3.03.3.13.4.03.5.03.5.13.6.03.6.13.7.03.7.0-pre1293.8.03.8.0-pre1383.8.0-pre1433.8.0-pre1453.8.0-pre1463.8.0-pre1473.8.0-pre1483.8.0-pre1553.8.0-pre1563.8.0-pre1583.8.0-pre1593.8.0-pre1613.8.0-pre1623.8.0-pre1673.8.0-pre1693.8.0-pre1703.8.0-pre1713.8.0-pre1753.8.0-pre1783.8.0-pre1843.8.0-pre1853.8.0-pre1863.8.0-pre1873.8.0-pre1883.8.0-pre1893.8.0-pre1903.8.0-pre1913.8.0-pre1933.8.0-pre1943.8.0-pre1953.8.0-pre1963.8.0-pre1973.8.0-pre1983.8.0-pre199
5.0.0
YamlDotNet.Signed
NuGet
before 5.0.0, plus listed versions
3.3.13.4.03.5.03.5.13.6.0
Show 45 moreShow less
3.6.13.7.03.7.0-pre1293.8.03.8.0-pre1433.8.0-pre1453.8.0-pre1463.8.0-pre1473.8.0-pre1483.8.0-pre1553.8.0-pre1563.8.0-pre1583.8.0-pre1593.8.0-pre1613.8.0-pre1623.8.0-pre1673.8.0-pre1693.8.0-pre1703.8.0-pre1713.8.0-pre1753.8.0-pre1783.8.0-pre1843.8.0-pre1853.8.0-pre1863.8.0-pre1873.8.0-pre1883.8.0-pre1893.8.0-pre1903.8.0-pre1913.8.0-pre1933.8.0-pre1943.8.0-pre1953.8.0-pre1963.8.0-pre1973.8.0-pre1983.8.0-pre1993.8.0-pre2003.8.0-pre2013.8.0-pre2033.8.0-pre2063.8.0-pre2093.8.0-pre2103.8.0-pre2113.8.0-pre2143.8.0-pre221
5.0.0

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-1000210 is a high vulnerability (CVSS 7.8) in Yamldotnet Project Yamldotnet, published July 13, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.47%, the 73rd percentile. Fixed in YamlDotNet 5.0.0.

References

This page doesn't list everything

Left out here: 220 versions. The JSON record has them.

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