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Vulnerability record · CVE-2024-49038 · published 26 November 2024

CVE-2024-49038: Microsoft copilot studio cross-site scripting vulnerability

Microsoft · Copilot Studio

Improper neutralization of input during web page generation ('Cross-site Scripting') in Copilot Studio by an unauthorized attacker leads to elevation of privilege over a network.

9.6 CVSS 3.1 Critical EPSS 0.96% · top 40.0% CWE-79 · Cross-site scripting
9.6CVSS 3.1 base score
0.96%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

Improper neutralization of input during web page generation ('Cross-site Scripting') in Copilot Studio by an unauthorized attacker leads to elevation of privilege over a network.

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

Affected products

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

References

LinkTags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-49038 Vendor Advisory

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Related vulnerabilities

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

10.0CVE-2026-80098Microsoft copilot studio improper verification of cryptographic signature vulnerabilityImproper verification of cryptographic signature in Copilot Studio allows an unauthorized attacker to elevate privileges over a network.EPSS 0.49%7.5CVE-2026-21520Microsoft copilot studio command injection vulnerabilityExposure of Sensitive Information to an Unauthorized Actor in Copilot Studio allows a unauthenticated attacker to view sensitive information through …EPSS 1.5%7.5CVE-2024-43610Microsoft copilot studio information exposure vulnerabilityExposure of Sensitive Information to an Unauthorized Actor in Copilot Studio allows a unauthenticated attacker to view sensitive information through …EPSS 1.1%6.5CVE-2024-38206Microsoft copilot studio server-side request forgery (ssrf) vulnerabilityAn authenticated attacker can bypass Server-Side Request Forgery (SSRF) protection in Microsoft Copilot Studio to leak sensitive information over a n…EPSS 12%6.1CVE-2026-42897Microsoft Exchange Server XSS enables spoofingMicrosoft Exchange Server and Exchange Server Subscription Edition fail to neutralize input during web page generation, a cross-site scripting flaw (…KEVEPSS 0.52%analysed6.1CVE-2025-48700Zimbra Classic UI stored XSS via crafted email HTMLZimbra Collaboration Suite Classic UI fails to properly sanitize HTML content in email messages, allowing crafted tag structures and attribute values…KEVEPSS 1.7%analysed6.1CVE-2025-66376Zimbra Collaboration Classic UI stored XSS via CSS @import in emailZimbra Collaboration Suite 10 before 10.0.18 and 10.1 before 10.1.13 allows stored cross-site scripting in the Classic UI through CSS @import directi…KEVEPSS 20%analysed6.1CVE-2025-68461Roundcube Webmail XSS via SVG animate tagRoundcube Webmail before 1.5.12 and 1.6 before 1.6.12 is vulnerable to cross-site scripting through the animate tag in an SVG document. Because the f…KEVEPSS 27%analysed

Source: NIST National Vulnerability Database (record CVE-2024-49038), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.