CVE-2021-46364 json
Deserialization of Untrusted Data in Magnolia CMS
published 4y ago modified 4mo ago also GHSA-pwr6-p3fh-grc2 , EUVD-2022-1138
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.6%
- EPSS 1.6% chance of exploitation in 30 days, percentile 75%
- public exploits
- 0
- none known
Summary
A vulnerability in the Snake YAML parser of Magnolia CMS v6.2.3 and below allows attackers to execute arbitrary code via a crafted YAML file.
Patch / fix
- maven info.magnolia:magnolia-core 6.2.4
- magnolia-cms magnolia_cms 6.2.4
Is CVE-2021-46364 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
1.57% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2021-46364-YAML%20Deserialization-Magnolia%20CMS referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
| GitHub | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | info.magnolia:magnolia-core | <6.2.4 |
6.2.4 |
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
github.com
/DrunkenShells/Disclosures/tree/master/CVE-2021-46364-YAML%20Deserialization-Magnolia%20CMS
web, exploit, third-party-advisory
-
docs.magnolia-cms.com
/product-docs/6.2/Releases/Release-notes-for-Magnolia-CMS-6.2.4.html#_security_advisory
web, release-notes, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-46364
advisory
Sources
- CVE List CVE-2021-46364
- GitHub Advisory GHSA-pwr6-p3fh-grc2
- NVD CVE-2021-46364
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.