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CVE-2022-40407

29
FAUCET Score

CVE-2022-40407 is a high-severity zip slip vulnerability in Chamilo v1.11's file upload function, allowing authenticated attackers to execute arbitrary code by uploading a specially crafted Zip file. With a CVSS score of 8.8, this vulnerability poses a significant risk of complete compromise (confidentiality, integrity, availability) due to its network-based attack vector and low attack complexity. While there is no evidence of active exploitation, public exploit code, or significant community discussion, the potential for severe impact necessitates awareness.

Impacted Technologies

VendorProductVersion(s)CPE
1.11CPE matchmatch criteria
cpe:2.3:a:chamilo:chamilo:1.11:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.26%
Probability of exploitation in next 30 days
EPSS Percentile
66.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0126 is in the 64th percentile among its peer group of 17,805 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / alexmackey/security-research/blob/main/chamilo/ChamiloRceViaZipSlip.md
ExploitThird Party Advisory
github.com / chamilo/chamilo-lms
Product
support.chamilo.org / projects/chamilo-18/wiki/Security_issues
ExploitIssue TrackingVendor Advisory