CVE-2018-1000059
ValidFormBuilder version 4.5.4 contains a PHP Object Injection vulnerability in Valid Form unserialize method that can result in Possible to execute unauthorised system commands remotely and disclose file contents in file system.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.62%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
ValidFormBuilder version 4.5.4 contains a PHP Object Injection vulnerability in Valid Form unserialize method that can result in Possible to execute unauthorised system commands remotely and disclose file contents in file system.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.62% probability · 76th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-502
- Affected
- validformbuilder/validform builder
- Source
- cve@mitre.org
EPSS 1.6% since 27 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/validformbuilder/validformbuilder/issues/126Issue Tracking, Third Party Advisory
- https://github.com/validformbuilder/validformbuilder/issues/126Issue Tracking, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.