CVE-2022-39256
A vulnerability in versions prior to 6.13 allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.66%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Orckestra C1 CMS is a .NET based Web Content Management System. A vulnerability in versions prior to 6.13 allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS. Authentication is required to exploit this vulnerability. The authenticated user may perform the actions unknowingly by visiting a specially crafted site. This issue is patched in C1 CMS v6.13. There are no known workarounds.
- CVSS 3.1
- 8.0 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 1.66% probability · 77th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-502
- Affected
- orckestra/c1 cms
- Source
- security-advisories@github.com
EPSS 1.7% 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/Orckestra/C1-CMS-Foundation/pull/814Patch, Third Party Advisory
- https://github.com/Orckestra/C1-CMS-Foundation/releases/tag/v6.13Release Notes, Third Party Advisory
- https://github.com/Orckestra/C1-CMS-Foundation/security/advisories/GHSA-gfhp-jgp6-838jThird Party Advisory
- https://github.com/Orckestra/C1-CMS-Foundation/pull/814Patch, Third Party Advisory
- https://github.com/Orckestra/C1-CMS-Foundation/releases/tag/v6.13Release Notes, Third Party Advisory
- https://github.com/Orckestra/C1-CMS-Foundation/security/advisories/GHSA-gfhp-jgp6-838jThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.