CVE-2026-27822

Rust has Critical Stored XSS in Preview Modal, leading to Administrative Account Takeover

State: Published
Severity: 9.1 Critical
Published: Feb 25, 2026
Updated: Feb 25, 2026
Reserved: Feb 24, 2026

Description

RustFS is a distributed object storage system built in Rust. Prior to version 1.0.0-alpha.83, a Stored Cross-Site Scripting (XSS) vulnerability in the RustFS Console allows an attacker to execute arbitrary JavaScript in the context of the management console. By bypassing the PDF preview logic, an attacker can steal administrator credentials from `localStorage`, leading to full account takeover and system compromise. Version 1.0.0-alpha.83 fixes the issue.

Scores

CVSS	Score	Vector	Source
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
rustfsrustfs	< 1.0.0-alpha.83Affected

References

https://github.com/rustfs/rustfs/security/advisories/GHSA-v9fg-3cr2-277j

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