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TI-2026-21036 Aliases CVE-2026-26022GHSA-xrcr-gmf5-2r8j

Gogs: Stored XSS via data URI in issue comments

Priority HIGH 73CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

Gogs is an open source self-hosted Git service. Prior to version 0.14.2, a stored cross-site scripting (XSS) vulnerability exists in the comment and issue description functionality. The application's HTML sanitizer explicitly allows data: URI schemes, enabling authenticated users to inject arbitrary JavaScript execution via malicious links. This issue has been patched in version 0.14.2.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00354 29th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed gogs (gogs): 0.14.2gogs.io/gogs (Go): 0.14.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Gogsgogsbefore 0.14.20.14.2Patch availableCNA
—gogs.io/gogs (Go)before 0.14.20.14.2Patch availableGHSA-xrcr-gmf5-2r8j
  • gogs VendorGogs Affected before 0.14.2 Fixed in 0.14.2 Patch available CNA
  • gogs.io/gogs (Go) Vendor— Affected before 0.14.2 Fixed in 0.14.2 Patch available GHSA-xrcr-gmf5-2r8j

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:gogs:gogs:*:*:*:*:*:*:*:*before 0.14.2VulnerableGogs
  • cpe:2.3:a:gogs:gogs:*:*:*:*:*:*:*:* Versions before 0.14.2 Vulnerable ·Gogs

Remediation

  • Fix · CNA gogs (gogs) Fixed in 0.14.2
  • Fix · GHSA-xrcr-gmf5-2r8j gogs.io/gogs (Go) Fixed in 0.14.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-26022
  2. 2026-10-03 Alias added: GHSA-xrcr-gmf5-2r8j

References

Exploit 1

Patch 1

Advisory 1

Other 3

  • TI-2025-07419 File overwrite in file update API in Gogs KEVCVSS 4.0HIGH 8.7
  • TI-2022-01876 OS Command Injection in gogs/gogs CVSS 3.1CRITICAL 9.8
  • TI-2024-36988 Gogs has a Path Traversal in file update API CVSS 4.0HIGH 8.7
  • TI-2022-01744 Remote Command Execution in gogs/gogs CVSS 3.1CRITICAL 10.0
  • TI-2025-39562 Gogs's update .git/config file allows remote command execution CVSS 4.0CRITICAL 9.3
  • TI-2026-20951 Gogs: Cross-repository LFS object overwrite via missing content hash verification CVSS 3.1CRITICAL 9.3
See all 48 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences