What’s Vulnerable › Vulnerabilities

CVE-2025-34510: Sitecore XM, XC, and XP Post-Auth RCE via Zip Slip

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 24.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-06-17 · updated 2026-06-17
• Weakness: CWE-23

Description

Sitecore Experience Manager (XM), Experience Platform (XP), and Experience Commerce (XC) versions 9.0 through 9.3 and 10.0 through 10.4 are affected by a Zip Slip vulnerability. A remote, authenticated attacker can exploit this issue by sending a crafted HTTP request to upload a ZIP archive containing path traversal sequences, allowing arbitrary file writes and leading to code execution.

Affected products

• Sitecore Experience Commerce: from 9.0 through 10.4
• Sitecore Experience Manager: from 9.0 through 10.4
• Sitecore Experience Platform: from 9.0 before 10.4; 10.4 — fixed in 10.4
• Sitecore Managed Cloud: all versions

How to fix

Upgrade to a fixed version: Sitecore Experience Platform 10.4. Check the vendor advisory for mitigations.

References

• https://labs.watchtowr.com/is-b-for-backdoor-pre-auth-rce-chain-in-sitecore-experience-platform/
• https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003667

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