CVE-2026-21855 describes a reflected Cross-Site Scripting (XSS) vulnerability in the Tarkov Data Manager's toast notification system, affecting versions prior to January 2, 2025. An attacker can exploit this by crafting a malicious URL, leading to arbitrary JavaScript execution in a victim's browser session. This medium-severity vulnerability (CVSS 6.1) requires user interaction (UI:R) but has low attack complexity (AC:L), potentially impacting confidentiality and integrity (C:L, I:L). While there is no evidence of active exploitation, public exploit code, or KEV listing, the vulnerability has garnered significant community discussion with 11 mentions.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2025-01-02CPE matchmatch criteria | cpe:2.3:a:tarkov:tarkov_data_manager:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.