TI-2026-67754 Aliases CVE-2026-102777 GHSA-2gw6-8g27-32rm

Server-side request forgery in Event Gallery for Joomla picker

LOW 28CWE-918Published 2026-10-05 · Updated 2026-10-06

Key facts

Attack vector: Network
Privileges required: None
User interaction: Active
Attack complexity: Low
Attack requirements: None
Impact type: Information disclosure
Confidentiality · integrity · availability: Low · None · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.

Summary

Event Gallery for Joomla before 6.6.0 by svenbluege.de has a server-side request forgery in its Google Photos picker. The picker fetches image thumbnails through the server without checking the requested address or requiring a form token (CWE-918). A prepared web page could make a logged in administrator's server send the Google Photos access token to any address or fetch internal addresses. A back-end user with the Manage permission could do the same directly.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Joomla Extension - svenbluege.de - Server-side request forgery in the Google Photos picker in Event Gallery extension < 6.6.0 - The Google Photos picker of the back-end upload page fetches the thumbnails of the picked images through the server, with the OAuth access token of the Google Photos account. The task took the address to fetch from the request without checking it and asked for no form token. A prepared page on another web site could therefore make the server send the access token of the account to any address, or fetch addresses inside the server's network, in the name of a logged in administrator; a back-end user with the permission "Manage" could do the same directly. The token is valid for about an hour and reaches what the picker session of the account reaches.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00273 19th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
svenbluege.de	Event Gallery for Joomla	1.0.0-6.5.0	—	No fix listed	CNA

Event Gallery for Joomla Vendorsvenbluege.de Affected 1.0.0-6.5.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:svenbluege:event_gallery::::::joomla\!::*	before 6.6.0	Vulnerable	svenbluege.de

cpe:2.3:a:svenbluege:event_gallery:*:*:*:*:*:joomla\!:*:* Versions before 6.6.0 Vulnerable ·svenbluege.de

Remediation

The sources list no fixed version for Event Gallery for Joomla.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

2026-10-05 Threatist record created from CVE-2026-102777
2026-10-05 Alias added: GHSA-2gw6-8g27-32rm
2026-10-05 CISA SSVC decision points changed
2026-10-05 Priority changed: MEDIUM → LOW
2026-10-06 Affected versions changed · CNA
2026-10-15 CVSS score added · NVD

References

Other 1

https://www.svenbluege.de/

TI-2026-64889 Joomla Extension - svenbluege.de - CSRF in various cart actions in Event Gallery extension < 6.5.0 CVSS 4.0MEDIUM 6.9
TI-2026-63956 Joomla Extension - svenbluege.de - Path Traversal in Clear Cache task in Event Gallery extension < 6.5.0 CVSS 4.0HIGH 7.0
TI-2026-67749 Cross-site scripting and open redirect in Event Gallery for Joomla CVSS 4.0MEDIUM 5.3
TI-2026-63957 Open redirect in svenbluege.de Event Gallery for Joomla CVSS 4.0MEDIUM 5.3
TI-2026-67748 Event Gallery for Joomla: CSRF in back-end list tasks CVSS 4.0MEDIUM 5.1
TI-2026-64890 Cross-site request forgery in svenbluege.de Event Gallery for Joomla CVSS 4.0MEDIUM 5.1

See all 7 →

Sources

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