GibbonEdu Gibbon - Arbitrary File Upload (CVE-2023-45878)
159Exploiting IPs reported
GibbonEdu Gibbon version 25.0.1 and before allows Arbitrary File Write because rubrics_visualise_saveAjax.phps does not require authentication. The endpoint accepts the img, path, and gibbonPersonID parameters. The img parameter is expected to be a base64 encoded image. If the path parameter is set, the defined path is used as the destination folder, concatenated with the absolute path of the installation directory. The content of the img parameter is base64 decoded and written to the defined file path. This allows creation of PHP files that permit Remote Code Execution (unauthenticated).
CrowdSec analysis
CVE-2023-45878 is a critical unauthenticated vulnerability in GibbonEdu Gibbon that permits arbitrary file write, enabling attackers to potentially achieve remote code execution.
CrowdSec has been tracking this vulnerability and its exploits since 20th of May 2025.
CrowdSec network observations suggest that most exploitation of CVE-2023-45878 involves focused reconnaissance to identify viable targets. Attackers typically tailor their campaigns based on system exposure and configuration. It is unlikely that a given attack is accidental. Additionally, according to week-over-week analysis by CrowdSec, exploitation of CVE-2023-45878 is surging. Attack volumes are spiking well above historical norms, indicating widespread and escalating interest from threat actors. CVE-2023-45878 is currently experiencing high visibility and active exploitation across the internet.
Observed exploitation attempts are focused on URLs containing /modules/rubrics/rubrics_visualise_saveajax.php.
Exploitation
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Common Weakness Enumeration (CWE)
Protection
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Blocklist
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