CVE-2020-23219
Monstra CMS 3.0.4 allows attackers to execute arbitrary code via a crafted payload entered into the "Snippet content" field under the "Edit Snippet" module.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.58%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Monstra CMS 3.0.4 allows attackers to execute arbitrary code via a crafted payload entered into the "Snippet content" field under the "Edit Snippet" module.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.58% probability · 75th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-94
- Affected
- monstra/monstra cms
- Source
- cve@mitre.org
EPSS 1.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/monstra-cms/monstra/issues/466Exploit, Issue Tracking, Third Party Advisory
- https://github.com/monstra-cms/monstra/issues/466Exploit, Issue Tracking, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.