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CVE-2026-48313 – Unauthenticated Path Traversal Leads to Arbitrary File Read – Adobe ColdFusion 2…

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Summary

CVE-2026-48313 is a critical Path Traversal (CWE-22) vulnerability in Adobe ColdFusion, affecting versions 2025 Update 9 and 2023 Update 20 and all earlier releases. The flaw allows unauthenticated, remote attackers to read arbitrary files and gain limited write access outside the intended directory scope, earning a CVSS 3.1 base score of 9.3 (Critical). Adobe released patches on June 30, 2026 under security bulletin APSB26-68.

Technical details

  • Root cause: Improper limitation of a pathname to a restricted directory (path traversal / CWE-22), allowing requests to escape the intended file system boundary.
  • Trigger conditions: No authentication, no user interaction, and no special privileges are required. Exploitation is possible remotely over the network with low attack complexity.
  • Attack vector: Network-based HTTP request to an exposed ColdFusion instance; the changed scope (S:C) indicates the impact crosses security boundaries beyond the vulnerable component.
  • Impact: Successful exploitation enables arbitrary file system reads — exposing sensitive files such as configuration files, credentials, private keys, and source code — as well as limited file write access outside the intended access scope. Confidentiality impact is rated High; integrity impact is rated Low.

Affected software

  • Adobe ColdFusion 2025, Update 9 and all earlier versions
  • Adobe ColdFusion 2023, Update 20 and all earlier versions

Severity

  • CVSS v3.1 Base Score: 9.3 (Critical)
  • Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

Mitigation and recommended actions

  • Immediate – apply vendor patches:
    • Adobe ColdFusion 2025: upgrade to Update 10 (released June 30, 2026)
    • Adobe ColdFusion 2023: upgrade to Update 21 (released June 30, 2026)
  • Adobe also recommends applying JVM serialization filters per the ColdFusion security documentation and reviewing the relevant Lockdown Guide for each version.
  • If immediate patching is not feasible, restrict network access to ColdFusion administrative endpoints (e.g., /CFIDE/administrator/) via firewall or WAF rules and update JDK/JRE to the latest Long-Term Support release.

IONIX Status

The IONIX research team is tracking ongoing exploitation attempts and recommends immediate patching. Potentially affected assets are outlined in this post.

References

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