Cursor's Mermaid Diagram Tool is Vulnerable to an Arbitrary Image Fetch
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| cursor | cursor | affected |
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No data.
| Vendor | Product | Versions |
|---|---|---|
| Cursor | Cursor | — |
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-23407 | Cursor is a code editor built for programming with AI. In versions below 1.3, Mermaid (which is used to render diagrams) allows embedding images which then get rendered by Cursor in the chat box. An attacker can use this to exfiltrate sensitive information to a third-party attacker controlled server through an image fetch after successfully performing a prompt injection. A malicious model (or hallucination/backdoor) might also trigger this exploit at will. This issue requires prompt injection from malicious data (web, image upload, source code) in order to exploit. In that case, it can send sensitive information to an attacker-controlled external server. This is fixed in version 1.3. |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.400% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Anysphere
Anysphere cursor |
|
| Weaknesses | NVD-CWE-noinfo | |
| CPEs | cpe:2.3:a:anysphere:cursor:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Anysphere
Anysphere cursor |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Cursor
Cursor cursor |
|
| Vendors & Products |
Cursor
Cursor cursor |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Cursor is a code editor built for programming with AI. In versions below 1.3, Mermaid (which is used to render diagrams) allows embedding images which then get rendered by Cursor in the chat box. An attacker can use this to exfiltrate sensitive information to a third-party attacker controlled server through an image fetch after successfully performing a prompt injection. A malicious model (or hallucination/backdoor) might also trigger this exploit at will. This issue requires prompt injection from malicious data (web, image upload, source code) in order to exploit. In that case, it can send sensitive information to an attacker-controlled external server. This is fixed in version 1.3. | |
| Title | Cursor's Mermaid Diagram Tool is Vulnerable to an Arbitrary Image Fetch | |
| Weaknesses | CWE-918 | |
| References |
| |
| Metrics |
cvssV3_1
|