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CVE-2026-39918

Vvveb < 1.0.8.1 Code Injection via Installation Endpoint

Published: Apr 20, 2026Updated: Apr 20, 2026 Sources: CVE List
NVD MITRE
9.8CVSS
CRITICAL

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.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High

Weaknesses

CWE-94CWE-94 Improper Control of Generation of Code ('Code Injection')

Affected Products

Vvveb
givanz

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

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

Timeline

Published
Apr 20, 2026
Last Updated
Apr 20, 2026

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