CVE-2021-23262
Snakeyaml deserialization vulnerability bypass
Authenticated administrators may modify the main YAML configuration file and load a Java class resulting in RCE.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- High
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Snakeyaml deserialization vulnerability bypass
Authenticated administrators may modify the main YAML configuration file and load a Java class resulting in RCE.
- Record
CVE-2021-23262- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-913
- Updated
- 2026-11-02
EUVDEUVD-2021-10361
Authenticated administrators may modify the main YAML configuration file and load a Java class resulting in RCE.
- Record
EUVD-2021-10361- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-v5x7-7m6q-5hvf No score
Authenticated administrators may modify the main YAML configuration file and load a Java class...
Authenticated administrators may modify the main YAML configuration file and load a Java class resulting in RCE.
- Record
GHSA-v5x7-7m6q-5hvf- Weakness
- CWE-913
- Updated
- 2026-11-02
NVD
Authenticated administrators may modify the main YAML configuration file and load a Java class resulting in RCE.
- Record
CVE-2021-23262- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H - CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:P - Weakness
- CWE-913
- Updated
- 2026-11-02
OSV
Authenticated administrators may modify the main YAML configuration file and load a Java class resulting in RCE.
- Record
CVE-2021-23262- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-23262 is a medium vulnerability (CVSS 4.2) in Crafter Software Cms, published December 2, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.64%, the 51st percentile. No source names a fixed version.