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9.0
CRITICAL CVSS 3.1
CVE-2026-27822
Rust has Critical Stored XSS in Preview Modal, leading to Administrative Account Takeover
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.

INFO

Published Date :

Feb. 25, 2026, 3:16 a.m.

Last Modified :

Feb. 25, 2026, 3:36 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2026-27822 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Rustfs rustfs
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 CRITICAL [email protected]
CVSS 3.1 MEDIUM [email protected]
Solution
Update RustFS to version 1.0.0-alpha.83 or later to fix the Stored XSS vulnerability.
  • Update RustFS to version 1.0.0-alpha.83 or later.
  • Review and sanitize all user-supplied input for the PDF preview.
  • Implement stricter access controls for the management console.
  • Monitor for suspicious activity within the console.
Public PoC/Exploit Available at Github

CVE-2026-27822 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-27822.

URL Resource
https://github.com/rustfs/rustfs/security/advisories/GHSA-v9fg-3cr2-277j Exploit Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-27822 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-27822 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
peterjiang36/peterjiang36

None

Updated: 2 days, 15 hours ago
0 stars 0 fork 0 watcher
Born at : Dec. 22, 2024, 7:16 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
tanjiti/sec_profile

爬取secwiki和xuanwu.github.io/sec.today,分析安全信息站点、安全趋势、提取安全工作者账号(twitter,weixin,github等)

Python HTML

Updated: 1 day, 5 hours ago
1467 stars 240 fork 240 watcher
Born at : Feb. 19, 2019, 10:24 a.m. This repo has been linked 13 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-27822 vulnerability anywhere in the article.

  • Daily CyberSecurity
Critical XSS Flaw in RustFS Exposes S3 Storage to Total Admin Account Takeovers

RustFS is an open-source, high-performance distributed object storage system that is built in the Rust programming language. It is optimized for AI, big data workloads, and data lakes while offering f ... Read more

Published Date: Feb 27, 2026 (1 day, 10 hours ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-27822 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Feb. 25, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    Added CPE Configuration OR *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha13:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha14:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha15:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha16:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha17:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha18:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha19:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha20:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha21:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha22:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha23:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha24:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha25:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha26:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha27:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha28:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha29:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha30:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha31:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha32:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha33:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha34:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha35:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha36:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha37:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha38:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha39:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha40:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha41:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha42:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha43:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha44:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha45:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha46:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha47:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha48:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha49:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha50:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha51:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha52:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha53:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha54:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha55:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha56:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha57:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha58:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha59:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha60:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha61:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha62:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha63:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha64:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha65:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha66:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha67:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha68:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha69:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha70:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha71:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha72:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha73:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha74:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha75:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha76:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha77:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha78:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha1:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha10:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha11:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha12:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha2:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha3:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha4:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha5:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha6:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha7:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha8:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha9:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha79:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha80:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha81:*:*:*:rust:*:* *cpe:2.3:a:rustfs:rustfs:1.0.0:alpha82:*:*:*:rust:*:*
    Added Reference Type GitHub, Inc.: https://github.com/rustfs/rustfs/security/advisories/GHSA-v9fg-3cr2-277j Types: Exploit, Vendor Advisory
  • New CVE Received by [email protected]

    Feb. 25, 2026

    Action Type Old Value New Value
    Added 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.
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
    Added CWE CWE-79
    Added Reference https://github.com/rustfs/rustfs/security/advisories/GHSA-v9fg-3cr2-277j
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 9.0
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact