Actively exploited in the wild
Citrix StoreFront Server XML External Entity (XXE) Processing Vulnerability
Citrix - StoreFront Server · Listed in the CISA KEV since 2021-11-03. This indicates confirmed attacks in production environments.
Required action: Apply updates per vendor instructions.
CVE-2019-13608
HighCVSS 7.5KEVSummary
Citrix StoreFront Server before 1903, 7.15 LTSR before CU4 (3.12.4000), and 7.6 LTSR before CU8 (3.0.8000) allows XXE attacks.
Risk Assessment
An attacker could exploit the XXE vulnerability to read files on the server, perform SSRF attacks, or in some cases achieve remote code execution.
Recommendation
Update Citrix StoreFront Server to version 1903, 7.15 LTSR CU4, or 7.6 LTSR CU8 (or later).
Related vulnerabilities
- CVE-2026-93467Critical
The OAKlouds developed by HGiga has an Insecure Deserialization vulnerability. Unauthenticated remote attackers can execute arbitrary code on the server by sending maliciously crafted serialized content.
- CVE-2026-85878Critical
Improper authorization in Azure Database for PostgreSQL allows an authorized attacker to elevate privileges over a network.
- CVE-2026-69843Critical
Authentication bypass by spoofing in Microsoft Fabric allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-62874Critical
Insufficient verification of data authenticity in Azure Billing allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-87886HighActively exploited
The vulnerability is a local privilege escalation due to insecure file permissions. It affects Acronis Backup plugin for cPanel & WHM (Linux) before build 1.9.3.1021, Acronis Backup extension for Plesk (Linux) before build 1.8.11.638, and Acronis Backup plugin for DirectAdmin (Linux) before build 1.2.3.238.
- CVE-2026-87701Critical
Improper neutralization of special elements in output used by a downstream component ('injection') in Azure Cosmos DB allows an authorized attacker to elevate privileges over a network.
- CVE-2026-85889Critical
Missing authentication for a critical function in Azure AI Foundry allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-85885Critical
Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an authorized attacker to elevate privileges over a network.
- CVE-2026-83944Critical
Improper access control in Azure Logic Apps allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-77903Critical
Authentication bypass by spoofing in Microsoft Dataverse allows an unauthorized attacker to elevate privileges over a network.
Original NVD description (English source)
Citrix StoreFront Server before 1903, 7.15 LTSR before CU4 (3.12.4000), and 7.6 LTSR before CU8 (3.0.8000) allows XXE attacks.