Sitecore - Arbitrary File Upload (CVE-2025-34511)
223Exploiting IPs reported
Sitecore PowerShell Extensions, an add-on to Sitecore Experience Manager (XM) and Experience Platform (XP), through version 7.0 is vulnerable to an unrestricted file upload issue. A remote, authenticated attacker can upload arbitrary files to the server using crafted HTTP requests, resulting in remote code execution.
CrowdSec analysis
CVE-2025-34511 is a critical vulnerability in the Sitecore PowerShell Extensions plugin. It allows remote, unauthenticated attackers to upload arbitrary files to the server, potentially leading to remote code execution.
CrowdSec has been tracking this vulnerability and its exploits since 20th of June 2025.
According to CrowdSec data, while opportunistic exploitation dominates, a portion of threat actors trying to exploit CVE-2025-34511 apply basic targeting methods such as port or service detection. This indicates emerging patterns of selective targeting. Additionally, according to week-over-week analysis by CrowdSec, exploitation of CVE-2025-34511 is surging. Attack volumes are spiking well above historical norms, indicating widespread and escalating interest from threat actors. CVE-2025-34511 is currently experiencing high visibility and active exploitation across the internet.
Attackers exploit this vulnerability by sending crafted POST requests with malicious payloads to the powershelluploadfile2.aspx endpoint, located at /sitecore%20modules/shell/powershell/uploadfile.
Exploitation
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Common Weakness Enumeration (CWE)
Protection
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Blocklist
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