CVE-2026-64836: ICEcoder through 8.1 Path Traversal via Ineffective File::check() Confinement

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-10 · updated 2026-09-10
Weakness: CWE-22

Description

ICEcoder versions through 8.1 contain a path traversal vulnerability in the file-control endpoint due to a logic error in the document-root confinement check. The File::check() validation function compares realpath() to boolean true, which never succeeds, allowing authenticated attackers to submit traversal sequences or absolute paths in the file parameter to read, write, or delete files outside the configured document root.

Affected products

ICEcoder: from 8.0 through 8.1

References

https://github.com/Caycon/cve-advisories/blob/main/2026/ICEcoder/CVE-2026-64836.md
https://github.com/icecoder/ICEcoder
https://github.com/icecoder/ICEcoder/blob/4a61847ef7bb0360735cf1d55c45e5de9746e24e/classes/File.php#L70
https://www.vulncheck.com/advisories/icecoder-through-8.1-path-traversal-via-ineffective-file-check-confinement

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