Is this vulnerability remotely exploitable?

Yes. Once an attacker can upload a malicious document, they can send links to that document to other users. Any logged-in user who opens the link in a browser is exposed, making this effectively remotely exploitable via normal web interactions.

What level of access does an attacker need to exploit this?

The attacker needs the ability to upload files to the conference (e.g., as an author, reviewer, or any role that can submit attachments). They do not need administrative privileges; they only need a role that allows uploading to fields where general file types are accepted and then to convince or wait for another user to view the document.

What is the safest general fix pattern for developers?

The safest pattern is to strictly serve potentially active content (HTML, SVG, and similar types) as downloads using `Content-Disposition: attachment`, or to host uploads on a separate, unprivileged origin where scripts cannot impact the main application. Inline rendering should be restricted to a clear allowlist of known-safe MIME types.

Severity:

HIGH RISK

(7.3)

Stored Cross-Site Scripting (CWE-79) via Inline Document Rendering in HotCRP

CVE-2026-25156

Published:

Jan 30, 2026

Status:

Awaiting Analysis

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-306

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

Account Takeover / Loss of Account Control

February 17, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Remote Code Execution on the Server Host

February 17, 2026

Vulnerability Type

Category:

Cross-Site Scripting (XSS)

CWE:

CWE-79

Impact:

Stored Cross-Site Scripting leading to account/session compromise and arbitrary in-application actions

Severity:

HIGH RISK

(7.3)

CVSS Version:

3.1

Vulnerability Type

Category:

Cross-Site Scripting (XSS)

CWE:

CWE-79

Impact:

Stored Cross-Site Scripting leading to account/session compromise and arbitrary in-application actions

Severity:

HIGH RISK

(7.3)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

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355 Bryant St. San Francisco, CA 94107, USA

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Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Stored Cross-Site Scripting (CWE-79) via Inline Document Rendering in HotCRP

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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