Security Vulnerabilities
LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the POST /api/files/images endpoint allows any authenticated user to upload files into any agent's tool_resources (e.g., context, execute_code) without verifying ownership or EDIT permission on the target agent. A permission check was added to the POST /api/files route in a previous patch, but the image upload route was never updated with the same check. An attacker can simply use the image endpoint instead of the file endpoint to bypass the authorization entirely. This vulnerability is fixed in 0.8.4-rc1.
CVSS Score
6.5
EPSS Score
0.002
Published
2026-06-25
LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the DELETE /api/messages/:conversationId/:messageId endpoint allows any authenticated user to delete any other user's messages. The validateMessageReq middleware only validates that the conversationId belongs to the requesting user, but the handler calls deleteMessages({ messageId }) using only the messageId as the MongoDB filter — without adding a user constraint. An attacker provides their own valid conversationId (to pass validation) and the victim's messageId (to target deletion), resulting in permanent, irrecoverable message deletion. This vulnerability is fixed in 0.8.4-rc1.
CVSS Score
5.3
EPSS Score
0.002
Published
2026-06-25
LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.5, LibreChat's MCP OAuth implementation does not validate that the resource parameter from OAuth Protected Resource metadata (RFC 9728) matches the configured MCP server URL, allowing a malicious MCP server to steal access tokens intended for a legitimate server. This vulnerability is fixed in 0.8.5.
CVSS Score
8.0
EPSS Score
0.001
Published
2026-06-25
LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, LibreChat allows users to configure custom OpenAI-compatible API endpoints by setting a baseURL. This URL is used to construct HTTP requests without any SSRF validation — no private IP check, no scheme restriction, no DNS pinning. An authenticated user can set baseURL to internal network addresses. This vulnerability is fixed in 0.8.4-rc1.
CVSS Score
7.7
EPSS Score
0.002
Published
2026-06-25
Zephyr's IPv6 network stack can be prevented from receiving or processing future incoming packets by sending a small number of maliciously fragmented IPv6 packets. When such a packet is handled by the fragment-header processing path, the associated RX network packet buffer (allocated from a memory slab) is not released back to the pool. Repeating the malicious packet exhausts all RX buffer slots, after which the device can no longer obtain RX buffers and stops receiving traffic, resulting in a denial of service.
CVSS Score
7.5
EPSS Score
0.003
Published
2026-06-25
CWE-476 NULL Pointer Dereference vulnerability exists that could cause a denial-of-service condition, rendering the device’s HMI and configuration functionality unavailable when malformed requests are received over exposed network interfaces.
CVSS Score
8.7
EPSS Score
0.003
Published
2026-06-25
CWE-78 Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability exists that could allow unauthorized execution of commands with elevated privileges, impacting system integrity, confidentiality, and availability when a privileged authenticated user interacts with a vulnerable network-exposed service.
CVSS Score
8.6
EPSS Score
0.012
Published
2026-06-25
CWE-617 Reachable Assertion vulnerability exists that could allow an authenticated attacker to trigger a denial-of-service condition, impacting system availability when a specially crafted request is sent to a vulnerable network-exposed service.
CVSS Score
6.9
EPSS Score
0.002
Published
2026-06-25
CWE-522 Insufficiently Protected Credentials vulnerability that could cause unauthorized access and exposure of sensitive information when unauthenticated attacker accesses credentials stored within firmware or system files. With this credential an attacker could subsequently compromise the device if they have physical access to the device.
CVSS Score
8.7
EPSS Score
0.002
Published
2026-06-25
CWE-732 Incorrect Permission Assignment for Critical Resource vulnerability that could cause unauthorized disclosure of password hashes and potential account compromise when an attacker with privileged local access reads improperly protected system files.
CVSS Score
6.7
EPSS Score
0.001
Published
2026-06-25