CVE-2026-34562 json
CI4MS: System Settings (Company Information) Full Platform Compromise & Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS
published 2026-04-01 7 mo ago modified 2026-10-26 13 d ago also EUVD-2026-18074 , GHSA-v897-c6vq-6cr3
- cvss
- 4.7
- 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 20%
- public exploits
- 0
- none known
Summary
CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to version 0.31.0.0, the application fails to properly sanitize user-controlled input within System Settings – Company Information. Several administrative configuration fields accept attacker-controlled input that is stored server-side and later rendered without proper output encoding. This issue has been patched in version 0.31.0.0.
Patch / fix
- packagist ci4-cms-erp/ci4ms 0.31.0.0
- ci4-cms-erp ci4ms 0.31.0.0
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-v897-c6vq-6cr3 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L |
| GitHub | 3.1 | 4.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L |
| NVD | 3.1 | 9.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | ci4-cms-erp/ci4ms | <0.31.0.0 |
0.31.0.0 |
Affected products
- ci4-cms-erp ci4ms
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/ci4-cms-erp/ci4ms/security/advisories/GHSA-v897-c6vq-6cr3
web, exploit, vendor-advisory
-
github.com
/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0
web, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-34562
advisory
-
github.com
/ci4-cms-erp/ci4ms
package
Sources
- CVE List CVE-2026-34562
- GitHub Advisory GHSA-v897-c6vq-6cr3
- NVD CVE-2026-34562
Fencer Vulns 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.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.