Phar unserialization vulnerability in phpMussel
Impact
What kind of vulnerability is it? Who is impacted?
Anyone using >= v1.0.0 < v1.6.0.
Patches
Has the problem been patched? What versions should users upgrade to?
Yes. Upgrading to at least >= v1.6.0 (the earliest safe version) will resolve the problem. However, as multiple new major versions have been released since that version, upgrading to the latest available version is recommended, in order to protect against any potential future vulnerabilities, unknown at the time of writing this advisory.
Workarounds
Is there a way for users to fix or remediate the vulnerability without upgrading?
Yes. In the package's configuration, disable archive checking by setting check_archives to false (thus avoiding execution of the affected parts of the codebase entirely).
References
Are there any links users can visit to find out more?
Yes. The vulnerability is documented at SECURITY.md and also at #167.
For more information
If you have any questions or comments about this advisory:
- Comment at the issue linked to this advisory, or..
- Contact the package author.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | maikuolan/phpmussel | >= 1.0.0, < 1.6.0 | 1.6.0 |
| Composer package | phpmussel/phpmussel | >= 1.0.0, < 1.6.0 | 1.6.0 |
References
- https://github.com/phpMussel/phpMussel/security/advisories/GHSA-qr95-4mq5-r3fh
- https://nvd.nist.gov/vuln/detail/CVE-2020-4043
- https://github.com/phpMussel/phpMussel/issues/167
- https://github.com/phpMussel/phpMussel/pull/173
- https://github.com/phpMussel/phpMussel/commit/97f25973433921c1f953430f32d3081adc4851a4
- https://github.com/phpMussel/phpMussel
- https://github.com/phpMussel/phpMussel/security/policy#currently-known-vulnerabilities
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N- Weakness (CWE)
CWE-502- Platform
- Composer
- Package
maikuolan/phpmussel, phpmussel/phpmussel- Disclosed
- 10.06.2020
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-qr95-4mq5-r3fh - CC BY 4.0
Vulnerability history: phpmussel/phpmussel
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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