Is this XSS vulnerability remotely exploitable over the internet?

Yes, if a Gogs instance is accessible over the internet and an attacker has a way to create or modify milestones, they can store a malicious milestone name and then trick or wait for another user to interact with it on the New Issue page.

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

The attacker must have sufficient permissions to create or modify milestones in a repository, which often corresponds to collaborator or project member roles. Anonymous users typically cannot trigger it unless milestone creation is exposed to them.

What is the safest general fix pattern for this kind of bug?

Ensure that all user-controlled values, including milestone names, are properly escaped or encoded before being inserted into the DOM, and avoid APIs that interpret strings as HTML. Use templating or UI frameworks that auto-escape variables by default and only allow HTML in tightly controlled, sanitized contexts.

Severity:

HIGH RISK

(7.3)

DOM-Based Cross-Site Scripting (CWE-79) in Gogs Milestone Handling

CVE-2026-26276

Published:

Mar 5, 2026

Status:

Analyzed

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-78

CRITICAL RISK

CRITICAL

(9.9)

Command Injection in MCP Stdio Configuration Validation (CWE-78) in WeKnora

Remote Code Execution

March 7, 2026

CWE-89

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Remote Code Execution via SQL Injection on the Database Server

March 7, 2026

Vulnerability Type

Category:

Cross-Site Scripting (XSS)

CWE:

CWE-79

Impact:

Client-Side Code Execution within User Browsers

Severity:

HIGH RISK

(7.3)

CVSS Version:

3.1

Vulnerability Type

Category:

Cross-Site Scripting (XSS)

CWE:

CWE-79

Impact:

Client-Side Code Execution within User Browsers

Severity:

HIGH RISK

(7.3)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

DOM-Based Cross-Site Scripting (CWE-79) in Gogs Milestone Handling

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

(9.9)

Command Injection in MCP Stdio Configuration Validation (CWE-78) in WeKnora

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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