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Vulnerability record · CVE-2023-26262 · published 14 March 2023

CVE-2023-26262: Sitecore experience manager unrestricted file upload vulnerability

SSitecore · Experience Manager

An issue was discovered in Sitecore XP/XM 10.3. As an authenticated Sitecore user, a unrestricted language file upload vulnerability exists the can lead to direct code execution on the content management (CM) server.

7.2 CVSS 3.1 High EPSS 1.7% · top 24.2% CWE-434 · Unrestricted file upload
7.2CVSS 3.1 base score
1.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

An issue was discovered in Sitecore XP/XM 10.3. As an authenticated Sitecore user, a unrestricted language file upload vulnerability exists the can lead to direct code execution on the content management (CM) server.

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/istern/CVE-2023-26262 ExploitMitigationThird Party Advisory
https://www.sitecore.com/trust Vendor Advisory
https://github.com/istern/CVE-2023-26262 ExploitMitigationThird Party Advisory
https://www.sitecore.com/trust Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-42237Sitecore XP insecure deserialization enables unauthenticated remote code executionSitecore XP 7.5 Initial Release through 8.2 Update-7 deserializes untrusted data, allowing an attacker to run arbitrary commands on the host. No auth…KEVEPSS 98%analysed9.8CVE-2019-9874Sitecore CMS/XP AntiCSRF module .NET deserialization RCEThe Sitecore.Security.AntiCSRF module in Sitecore CMS 7.0-7.2 and Sitecore XP 7.5-8.2 deserializes untrusted data from the HTTP POST parameter __CSRF…KEVEPSS 84%analysed9.0CVE-2025-53690Sitecore XM/XP untrusted deserialization enables code injectionSitecore Experience Manager and Experience Platform through version 9.0 deserialize untrusted data, allowing an attacker to inject and execute code. …KEVEPSS 51%analysed9.8CVE-2025-53693Sitecore experience commerce vulnerabilityUse of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Sitecore Sitecore Experience Manager (XM), Siteco…EPSS 15%9.8CVE-2023-35813Sitecore Experience products remote code execution via code injectionMultiple Sitecore products (Experience Manager, Experience Platform, Experience Commerce, and Managed Cloud) through version 10.3 contain a code inje…EPSS 87%analysed9.8CVE-2023-27068Sitecore experience platform deserialization of untrusted data vulnerabilityDeserialization of Untrusted Data in Sitecore Experience Platform through 10.2 allows remote attackers to run arbitrary code via ValidationResult.asp…EPSS 1.7%8.8CVE-2025-53691Sitecore experience commerce deserialization of untrusted data vulnerabilityDeserialization of Untrusted Data vulnerability in Sitecore Experience Manager (XM), Sitecore Experience Platform (XP) allows Remote Code Execution (…EPSS 1.6%8.8CVE-2025-34510Sitecore experience commerce relative path traversal vulnerabilitySitecore Experience Manager (XM), Experience Platform (XP), and Experience Commerce (XC) versions 9.0 through 9.3 and 10.0 through 10.4 are affected …EPSS 24%

Source: NIST National Vulnerability Database (record CVE-2023-26262), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.