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Gogs CVE-2026-26276

HIGH
Cross-site Scripting (XSS) (CWE-79)
2026-03-05 security-advisories@github.com GHSA-vgjm-2cpf-4g7c
XSS Gogs Suse
7.3
CVSS 3.1 · GitHub Advisory
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Severity by source

GitHub Advisory PRIMARY
7.3 HIGH
AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
SUSE
HIGH
qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 22:06 vuln.today
CVE Published
Mar 05, 2026 - 19:16 nvd
HIGH 7.3

DescriptionGitHub Advisory

Gogs is an open source self-hosted Git service. Prior to version 0.14.2, an attacker can store an HTML/JavaScript payload in a repository’s Milestone name, and when another user selects that Milestone on the New Issue page (/issues/new), a DOM-Based XSS is triggered. This issue has been patched in version 0.14.2.

AnalysisAI

Gogs versions prior to 0.14.2 contain a DOM-based XSS vulnerability in the Issue creation page where attackers can inject malicious scripts through milestone names that execute when other users interact with those milestones. An authenticated attacker can craft a repository with a malicious milestone name containing JavaScript payloads that trigger in victim browsers, potentially compromising user sessions or sensitive data. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Create repository with malicious Milestone name
Delivery
Store JavaScript payload in Milestone field
Exploit
Trick user to visit New Issue page
Execution
User selects poisoned Milestone
Impact
DOM-based XSS executes in victim's browser
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Vulnerability AssessmentAI

Exploitation Attacker must have repository creation privileges on Gogs instance. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 7.3 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker could exploit this vulnerability to compromise the affected system.
Remediation Fixed in version 0.14.2.. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Identify all Gogs instances in your environment and document their versions. …

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Vendor StatusVendor

SUSE

Severity: High

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CVE-2026-26276 vulnerability details – vuln.today
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