CVE-2018-20133
Code injection in ymlref
ymlref allows code injection.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
ymlref allows code injection.
- Record
CVE-2018-20133- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-94
- Updated
- 2026-11-02
CVE List No score
ymlref allows code injection.
- Record
CVE-2018-20133- Updated
- 2026-11-02
EUVDEUVD-2018-0147 No score
ymlref allows code injection.
- Record
EUVD-2018-0147- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8r8j-xvfj-36f9
Code injection in ymlref
ymlref is a library that allows to load Yaml documents and resolve JSON-pointer references inside them. ymlref versions up to 0.1.1 allow code injection.
- Record
GHSA-8r8j-xvfj-36f9- CVSS 4.0
- 9.3 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-94
- Updated
- 2026-11-02
OSVGHSA-8r8j-xvfj-36f9
Code injection in ymlref
ymlref is a library that allows to load Yaml documents and resolve JSON-pointer references inside them. ymlref versions up to 0.1.1 allow code injection.
- Record
GHSA-8r8j-xvfj-36f9- CVSS 4.0
- 9.3 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-94
- Updated
- 2026-11-02
OSVPYSEC-2018-103 No score
ymlref allows code injection.
- Record
PYSEC-2018-103- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-20133 is a critical vulnerability (CVSS 9.8) in Ymlref Project Ymlref, published December 17, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.83%, the 78th percentile. No source names a fixed version.