melisplatform/melis-cms vulnerable to deserialization of untrusted data
Impact
Attackers can deserialize arbitrary data on affected versions of melisplatform/melis-cms, and ultimately leads to the execution of arbitrary PHP code on the system. Conducting this attack does not require authentication.
Users should immediately upgrade to melisplatform/melis-cms >= 5.0.1.
Patches
This issue was addressed by restricting allowed classes when deserializing user-controlled data.
References
For more information
If you have any questions or comments about this advisory, you can contact:
- The original reporters, by sending an email to vulnerability.research [at] sonarsource.com;
- The maintainers, by opening an issue on this repository.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | melisplatform/melis-cms | < 5.0.1 | 5.0.1 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L- Weakness (CWE)
CWE-502- Platform
- Composer
- Package
melisplatform/melis-cms- Disclosed
- 11.10.2022
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-m3m3-6gww-7gj9 - CC BY 4.0
Vulnerability history: melisplatform/melis-cms
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 10.2022 10.2025
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 1
Disclosures per year
- 2022: 1
- 2023: 0
- 2024: 0
- 2025: 1
- 2026: 0
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melisplatform/melis-cms vulnerable to deserialization of untrusted data this entry
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