CVE-2022-40407 — A zip slip vulnerability in the file upload function of Chamilo v1

A zip slip vulnerability in the file upload function of Chamilo v1.11 allows attackers to execute arbitrary code via a crafted Zip file.

01What is this vulnerability?

A zip slip vulnerability in the file upload function of Chamilo v1.11 allows attackers to execute arbitrary code via a crafted Zip file.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-09-29T13:20:22.000Z
• Last modified: 2025-05-20T19:15:42.185Z

09References

• github.com — https://github.com/chamilo/chamilo-lms
• support.chamilo.org — https://support.chamilo.org/projects/chamilo-18/wiki/Security_issues#Issue-94-20…
• github.com — https://github.com/alexmackey/security-research/blob/main/chamilo/ChamiloRceViaZ…