CVE-2025-55797 json
FormCMS has an improper access control vulnerability in the /api/schemas/history/[schemaId] endpoint
published 2025-09-30 13 mo ago modified 2026-06-17 4 mo ago also GHSA-6cwx-42hw-w69c , EUVD-2025-31748
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 26%
- public exploits
- 0
- none known
Summary
An improper access control vulnerability in FormCms v0.5.4 in the /api/schemas/history/[schemaId] endpoint allows unauthenticated attackers to access historical schema data if a valid schemaId is known or guessed.
Patch / fix
- nuget FormCMS 0.5.5
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 13 mo ago
Exploit prediction
0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| nuget | FormCMS | <0.5.5 |
0.5.5 |
Classification
References
-
github.com
/FormCms
web, product
-
github.com
/FormCms/FormCms
package, product
-
github.com
/KKC73/me/tree/main/CVE-2025-55797
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2025-55797
advisory
-
github.com
/formcms/formcms/issues/19
web
Sources
- CVE List CVE-2025-55797
- GitHub Advisory GHSA-6cwx-42hw-w69c
- NVD CVE-2025-55797
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