Improper Input Validation Affecting vrana/adminer package, versions >=4.6.0, <5.5.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-PHP-VRANAADMINER-19428463
- published29 Aug 2026
- disclosed25 Aug 2026
- creditUnknown
Introduced: 25 Aug 2026
NewCVE-2026-16434 (opens in a new tab)How to fix?
Upgrade vrana/adminer to version 5.5.1 or higher.
Overview
vrana/adminer is a Database management in a single file.
Affected versions of this package are vulnerable to Improper Input Validation in the processing of the X-Forwarded-Prefix header due to improper validation of backslash characters. An attacker can manipulate the Set-Cookie Path attribute by supplying a specially crafted header value, potentially leading to anomalous cookie-path scoping. This is only exploitable if clients are able to set the X-Forwarded-Prefix header, such as when a reverse proxy is misconfigured or absent.