CVE-2026-126380
Vvveb before 1.0.9.0 RCE via .phar Extension Denylist Bypass in Media Upload
Vvveb before 1.0.9.0 contains a denylist bypass in system/traits/media.php where '.phar' is misconfigured with a leading dot, allowing authenticated administrators to upload .phar PHP files. Attackers can upload a GIF magic-byte polyglot webshell bypassing binary inspection and execute arbitrary OS commands as the web-server user.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Vvveb givanz vvveb/vvveb
composer |
≥ 0; < 1.0.9.0 (affected, custom) 1.0.9.0 (unaffected, custom) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 9.4 critical |
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H | CNA: VulnCheck |
| 3.1 / 9.1 critical |
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H | CNA: VulnCheck |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/givanz/Vvveb/security/advisories/GHSA-hcpj-pcpx-2744CNA: VulnCheck · vendor-advisory
- https://github.com/givanz/Vvveb/commit/638a6c6f5a7a7f7ff4c65f996894f400d8fb8e77CNA: VulnCheck · patch
- https://www.vulncheck.com/advisories/vvveb-before-1.0.9.0-rce-via-phar-extension-denylist-bypass-in-media-uploadCNA: VulnCheck · third-party-advisory
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