CVE-2026-39918

critical · 9.2

Vvveb prior to 1.0.8.1 contains a code injection vulnerability in the installation endpoint where the subdir POST parameter is written unsanitized into the env.php configuration file without escaping or validation. Attackers can inject arbitrary PHP code by breaking out of the string context in the define statement to achieve unauthenticated remote code execution as the web server user.

9.2

CVSS

0.7%

EPSS (exploit prob.)

50th

EPSS percentile

2026-04-20

Published

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-94

References

https://github.com/givanz/Vvveb/commit/5162c1639130bd080ab63c7d856788cd59d6b3b7
https://github.com/givanz/Vvveb/releases/tag/1.0.8.1
https://www.vulncheck.com/advisories/vvveb-code-injection-via-installation-endpoint

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-39918