CVE-2026-48287: Adobe C2pa RCE Vulnerability

CVE-2026-48287 Overview

CVE-2026-48287 affects Adobe's CAI (Content Authenticity Initiative) Content Credentials components, including the c2pa Rust library, the c2pa-web Node.js package, and the c2patool command-line utility. The flaw is an Untrusted Search Path weakness [CWE-426] that can result in arbitrary code execution in the context of the current user. Exploitation requires user interaction, such as visiting a maliciously crafted URL or interacting with a compromised web page. The vulnerability carries a changed scope, meaning successful exploitation can impact resources beyond the vulnerable component's security boundary.

Critical Impact
Attackers can achieve arbitrary code execution under the current user's privileges by tricking a victim into loading attacker-controlled resources through the flawed search path resolution.

Affected Products

Adobe c2pa (Rust)
Adobe c2pa-web (Node.js)
Adobe c2patool across Windows, macOS, Linux, Android, and iOS

Discovery Timeline

2026-07-14 - CVE-2026-48287 published to the National Vulnerability Database (NVD)
2026-07-16 - Last updated in NVD database

Technical Details for CVE-2026-48287

Vulnerability Analysis

CVE-2026-48287 is classified as an Untrusted Search Path issue [CWE-426]. The affected Content Credentials components resolve external resources, libraries, or helper binaries using search paths that include directories writable by, or influenced by, a local attacker. When a victim triggers the vulnerable code path, the process loads an attacker-supplied artifact instead of the legitimate one.

Because the CVSS scope is changed, code executed through the vulnerable process can affect assets outside the immediate security boundary of the C2PA tooling. This is particularly relevant for c2patool, which is often invoked from build pipelines and content workflows. The confidentiality and integrity impact are both rated High, while availability is not affected.

Root Cause

The root cause is improper control of the search path used to locate dependencies or auxiliary components. Applications that rely on relative paths, current-working-directory lookups, or environment variables such as PATH, LD_LIBRARY_PATH, or Node.js NODE_PATH are exposed when an attacker can plant a malicious file in a directory searched before the legitimate location.

Attack Vector

The attack vector is Local, but exploitation is triggered when a victim interacts with attacker-controlled content, such as visiting a crafted URL or opening a manipulated web page that drives the vulnerable tool to load a hijacked resource. Attack complexity is High because exploitation depends on conditions outside the attacker's direct control, including the victim's working directory, environment variables, and installed components. Adobe's advisory does not disclose full exploitation details. See the Adobe Security Advisory APSB26-80 for the authoritative technical description.

Detection Methods for CVE-2026-48287

Indicators of Compromise

Unexpected executable files, DLLs, or shared libraries in directories adjacent to c2patool, c2pa, or c2pa-web install locations.
Process launches of c2patool or Node.js processes hosting c2pa-web that spawn unexpected child processes or shells.
Modifications to user PATH, LD_LIBRARY_PATH, or Node.js module resolution directories preceding execution of Content Credentials tooling.

Detection Strategies

Hunt for file writes to writable directories that appear on the search path resolved by C2PA tooling immediately prior to tool execution.
Alert on c2patool or Node.js processes loading modules or libraries from non-standard, user-writable paths.
Correlate browser or email client activity with subsequent invocation of C2PA components to identify user-interaction-driven exploitation.

Monitoring Recommendations

Enable command-line and module-load telemetry on developer and content-creation workstations that use Adobe Content Credentials tooling.
Monitor changes to environment variables that influence library loading for accounts running C2PA components.
Track integrity of the c2pa, c2pa-web, and c2patool installation directories using file integrity monitoring.

How to Mitigate CVE-2026-48287

Immediate Actions Required

Inventory all systems, build agents, and developer endpoints that install c2pa, c2pa-web, or c2patool.
Apply the fixed versions listed in Adobe's advisory as soon as they are available in your environment.
Restrict write access to directories that appear in the search path used by Content Credentials tooling.

Patch Information

Adobe has published guidance and fixed versions in the Adobe Security Advisory APSB26-80. Update the Rust crate, the Node.js package, and the c2patool binary to the versions identified in that advisory across all supported platforms, including Windows, macOS, Linux, Android, and iOS.

Workarounds

Invoke c2patool only from trusted, non-writable working directories to reduce exposure to path hijacking.
Remove or sanitize user-writable entries from PATH, LD_LIBRARY_PATH, and Node.js module search paths on systems that run Content Credentials tooling.
Avoid opening untrusted URLs or web content on systems where C2PA tooling is installed until patches are applied.

bash

# Configuration example: run c2patool from a hardened working directory
cd /opt/c2pa/work            # non-user-writable directory
unset LD_LIBRARY_PATH        # avoid attacker-influenced library search
/usr/local/bin/c2patool --version