CVE-2026-48319 Overview
CVE-2026-48319 is a path traversal vulnerability affecting Adobe ColdFusion 2023 and Adobe ColdFusion 2025. The flaw stems from improper limitation of a pathname to a restricted directory [CWE-22]. An authenticated attacker with low privileges can exploit the issue over the network without user interaction. Successful exploitation results in arbitrary code execution in the context of the current user. The scope changes on exploitation, meaning the vulnerability can impact resources beyond the vulnerable component. Adobe published the fix in security bulletin APSB26-82.
Critical Impact
Attackers can achieve arbitrary code execution on affected ColdFusion servers by escaping the intended directory boundaries, potentially compromising the entire application environment and adjacent systems.
Affected Products
- Adobe ColdFusion 2023 (base release through Update 21)
- Adobe ColdFusion 2025 (base release through Update 10)
- All prior updates on the supported ColdFusion 2023 and 2025 branches
Discovery Timeline
- 2026-07-14 - CVE-2026-48319 published to the National Vulnerability Database
- 2026-07-15 - NVD record last modified with updated metadata
Technical Details for CVE-2026-48319
Vulnerability Analysis
CVE-2026-48319 is classified as Improper Limitation of a Pathname to a Restricted Directory, commonly known as path traversal [CWE-22]. ColdFusion fails to properly canonicalize or validate file paths supplied to certain server-side components. An authenticated user can supply crafted input containing traversal sequences that resolve outside the intended directory. Because the vulnerability chains file system access with code execution primitives in ColdFusion, the outcome is arbitrary code execution rather than simple file disclosure.
The scope change indicates that a successful exploit affects components beyond the initially vulnerable module. This typically involves crossing security boundaries such as ColdFusion sandboxing, application isolation, or process privilege contexts.
Root Cause
The root cause is insufficient validation of user-supplied path parameters before they are consumed by file handling routines. Traversal sequences such as ../ or absolute path references are not stripped or rejected. This allows the application to read from or write to locations the developer did not intend to expose, including directories used to load executable ColdFusion Markup Language (CFML) templates.
Attack Vector
Exploitation requires network access to the ColdFusion administrative or application surface and a low-privilege authenticated session. No user interaction is needed. An attacker submits crafted requests referencing a file path containing traversal sequences. The ColdFusion server resolves the path outside of the restricted directory, and the attacker leverages the write or include primitive to execute CFML in the context of the ColdFusion service account. See the Adobe ColdFusion Security Advisory (APSB26-82) for vendor-provided technical detail.
No public proof-of-concept code has been released at the time of publication.
Detection Methods for CVE-2026-48319
Indicators of Compromise
- HTTP requests to ColdFusion endpoints containing path traversal sequences such as ../, ..\, URL-encoded %2e%2e%2f, or double-encoded variants in file, template, or path parameters
- Unexpected .cfm, .cfml, or .cfc files appearing outside standard application directories such as CFIDE, wwwroot, or user-defined webroots
- ColdFusion service process (coldfusion.exe, jrun.exe, or Java process) spawning cmd.exe, powershell.exe, /bin/sh, or other command interpreters
- Outbound network connections initiated by the ColdFusion process to unfamiliar external hosts following an administrative request
Detection Strategies
- Inspect ColdFusion access logs and web server logs for path parameters containing traversal patterns or unusual absolute paths
- Correlate authenticated ColdFusion administrator sessions with subsequent file write events on the underlying host
- Baseline expected child processes of the ColdFusion service and alert on deviations such as shell or scripting interpreter execution
- Monitor file integrity on ColdFusion install directories, particularly CFIDE/administrator and application template roots
Monitoring Recommendations
- Enable verbose ColdFusion Administrator and application logging, and forward logs to a centralized SIEM for retention and correlation
- Deploy a web application firewall rule set that blocks traversal sequences and canonicalizes URI paths before they reach ColdFusion
- Track authentication events on the ColdFusion Administrator interface and alert on new or infrequent low-privilege accounts accessing file-handling functionality
How to Mitigate CVE-2026-48319
Immediate Actions Required
- Apply the Adobe security update referenced in APSB26-82 to all ColdFusion 2023 and 2025 installations as the primary remediation
- Restrict network access to the ColdFusion Administrator and internal application endpoints using firewall rules or reverse proxy allow lists
- Rotate credentials for any low-privilege ColdFusion accounts that could be leveraged for authenticated exploitation
- Audit ColdFusion installation directories for unexpected files that could indicate prior exploitation attempts
Patch Information
Adobe released fixed builds for ColdFusion 2023 and ColdFusion 2025. Administrators should install the latest available update as documented in the Adobe ColdFusion Security Advisory (APSB26-82). Reboot the ColdFusion service after patching and verify the running build number matches the fixed version.
Workarounds
- Enable ColdFusion sandbox security and restrict file system access to only the directories required by each application
- Run the ColdFusion service under a dedicated low-privilege account with no write access to system or unrelated application directories
- Deploy WAF rules to block requests containing traversal sequences targeting known ColdFusion endpoints until patching is complete
- Disable or remove unused ColdFusion components and administrative modules to reduce the attack surface
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
