Product Details
Product: AnythingLLM
Product Category: Self-hosted AI / LLM orchestration platform
Deployment Models: On-premise, containerized, cloud-hosted
Affected Versions: All versions earlier than 1.10.0
Security Impact: Remote code execution, credential exposure, data compromise
Attack Surface: Public-facing APIs, backend file handling logic, configuration storage
AnythingLLM is commonly deployed in environments where it maintains access to sensitive data such as documents, embeddings, API credentials, and execution contexts. Due to this, any weakness in file handling or access control directly affects the overall security posture of the host system and connected services.
CVE Summary Table
| CVE Name | CVE ID | CVSS Score | Severity | Vulnerability Type | Exploitability | Exploit Availability |
|---|---|---|---|---|---|---|
| AnythingLLM Path Traversal to RCE | CVE-2026-24478 | 8.8 | High | Arbitrary File Write → Remote Code Execution | Network exploitable, low complexity | Exploitation techniques publicly understood |
| AnythingLLM API Key Exposure | CVE-2026-24477 | 8.1 | High | Sensitive Information Disclosure | Network exploitable, low complexity | Practical exploitation possible |
CVE-2026-24478 — Path Traversal Leading to Remote Code Execution
Vulnerability Description
A path traversal vulnerability exists in AnythingLLM versions below 1.10.0 due to insufficient validation and normalization of user-supplied file paths. Backend functionality responsible for handling file creation and modification does not adequately restrict directory traversal sequences.
As a result, arbitrary files can be written to unintended locations on the server filesystem. Since the application runtime has access to executable directories and configuration files, this flaw can be escalated into full remote code execution.
Exploitation Details (Educational Purpose Only)
Exploitation is achieved by supplying crafted directory traversal sequences in parameters that control file paths. These sequences allow file writes outside of the intended working directory.
A typical exploitation flow is as follows:
- A backend endpoint accepting a filename or path is identified.
- Traversal patterns such as
../or encoded equivalents are injected. - A malicious script or modified application file is written to disk.
- The application later loads or executes the altered file.
- Arbitrary commands are executed under the service context.
This attack does not require authentication in misconfigured or publicly exposed deployments.
Proof-of-Concept Behavior (Non-Weaponized)
Traversal Pattern Example
../../../../../../app/runtime/extensions/custom.js
Payload Characteristics
- Embedded command execution logic
- Reverse shell initiation
- Malicious configuration override
Once written, execution occurs when the application restarts, reloads routes, or dynamically imports the modified component.
Impact Assessment
- Complete compromise of the AnythingLLM application
- Unauthorized access to stored documents and embeddings
- Exposure of API credentials stored on disk
- Persistence via backdoored application components
- Potential host-level compromise in container or privileged deployments
MITRE ATT&CK Technique Mapping
- Exploitation of Public-Facing Application
- Command and Scripting Interpreter
- Server-Side Component Modification
- Ingress Tool Transfer
- Valid Accounts (post-compromise usage)
Detection and Monitoring Guidance
Indicators of Exploitation
Application-Level Indicators
- File write operations targeting directories outside expected paths
- Application crashes or reloads following file upload requests
- Unexpected module or route behavior
Web Traffic Indicators
- Presence of traversal patterns in request parameters
- URL-encoded traversal attempts
- POST or PUT requests accessing file-related endpoints unusually
Host-Based Indicators
- New or modified executable files in application directories
- Child processes spawned by the AnythingLLM service unexpectedly
- Outbound connections initiated shortly after file write activity
Detection Rules
Rule 1 — Path Traversal Attempt Detection
Condition
- HTTP request contains directory traversal patterns
- AND request targets file handling endpoints
Pattern
(\.\./|\.\.\\|%2e%2e%2f|%252e%252e%252f)
Log Source
- Application access logs
- Reverse proxy logs
Rule 2 — Suspicious File Write Activity
Condition
- File creation or modification occurs
- AND destination directory is outside the application’s allowed workspace
Log Source
- Application logs
- Host file integrity monitoring
Rule 3 — Post-Exploitation Behavior
Condition
- New child process spawned by AnythingLLM service
- AND command execution utilities are invoked
Examples
bashshcurlwgetnc
Log Source
- OS audit logs
- Container runtime logs
Recommended Log Sources
- AnythingLLM backend application logs
- Reverse proxy or load balancer logs
- Container runtime logs (if applicable)
- Host-based file integrity monitoring
- Process execution and audit logs
Remediation and Patch Information
Required Action
- Immediate upgrade to version 1.10.0 or later
Security Fix Overview
- Strict path validation and normalization enforced
- File write operations restricted to allow-listed directories
- Traversal sequences explicitly blocked at API layer
Official Patch / Upgrade Link (Only Reference Provided)
CVE-2026-24477 — API Key Exposure
Vulnerability Description
A sensitive information disclosure issue exists in AnythingLLM versions below 1.10.0 where API keys are exposed through backend API responses and configuration endpoints. Insufficient authorization checks and overly verbose responses result in secrets being returned in plaintext.
These exposed credentials may include keys for language models, vector databases, or third-party integrations.
Exploitation Details (Educational Purpose Only)
Exploitation occurs when:
- An unauthenticated or low-privileged user accesses a configuration-related endpoint.
- The response contains sensitive credential fields.
- Retrieved API keys are reused to access external services or internal data stores.
No complex exploitation steps are required, and the attack can be performed remotely.
Impact Assessment
- Loss of confidentiality of stored data and embeddings
- Unauthorized access to connected vector databases
- Abuse of paid API services
- Secondary compromise of integrated systems
MITRE ATT&CK Technique Mapping
- Unsecured Credentials
- Data from Cloud Storage
- Valid Accounts
- Network Service Discovery
Detection and Monitoring Guidance
Indicators of Exposure
API Indicators
- Requests to configuration endpoints from unknown sources
- Responses containing credential-like strings
Usage Indicators
- Sudden increase in external API usage
- API calls originating from unfamiliar IP ranges
Detection Rules
Rule 4 — Credential Exposure in Responses
Condition
- HTTP response contains key-like patterns
- AND request origin is unauthenticated or non-admin
Pattern
(sk-[A-Za-z0-9]{20,})
Log Source
- API gateway logs
- Application response logs
Rule 5 — Suspicious API Key Usage
Condition
- External API usage spikes
- AND usage does not correlate with known workloads
Log Source
- Cloud provider API usage logs
- Billing and audit logs
Remediation and Patch Information
Required Action
- Upgrade to version 1.10.0 or later
- Rotate all API keys after patching
Security Fix Overview
- Sensitive values masked in API responses
- Role-based access enforcement implemented
- Debug and configuration endpoints restricted
Official Patch / Upgrade Link (Only Reference Provided)
Final Takeaway
- Immediate patching is strongly advised
- Credential rotation should be treated as mandatory
- Historical logs should be reviewed for signs of exploitation
- Least-privilege execution should be enforced
- Internet exposure should be minimized wherever possible
