PT-2026-21020 · Unknown · @Sync-In/Server

Published 2026-02-20 · Updated 2026-02-23 · CVE-2025-67438

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Sync-in Server versions prior to 1.9.3

Description A Stored Cross-Site Scripting (XSS) issue exists in Sync-in Server. An authenticated attacker can execute arbitrary JavaScript in a victim’s browser. This is achieved by uploading a crafted SVG file containing a malicious payload, potentially allowing the attacker to access and exfiltrate sensitive information, including the user's session cookies.

Recommendations Update Sync-in Server to version 1.9.3 or later.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-67438

GHSA-9JMQ-XGJM-P8C2

Affected Products

@Sync-In/Server

References · 9

• 🔥 https://gist.github.com/x0root/86db30af91bb0e1707eb7e57a049b6ad · Exploit
• https://github.com/Sync-in/server/releases/tag/v1.9.3 · Patch
• https://osv.dev/vulnerability/GHSA-9jmq-xgjm-p8c2 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-67438 · Security Note
• https://osv.dev/vulnerability/CVE-2025-67438 · Vendor Advisory
• https://github.com/Sync-in/server · Note
• https://github.com/Sync-in/server/commit/a6276d067725637310e4e83a3eee337aae81f439 · Note
• https://twitter.com/CVEnew/status/2025809083195089026 · Twitter Post
• https://twitter.com/_cvereports/status/2024969980010250639 · Twitter Post