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CVE-2025-54132 affects Cursor, an AI-assisted code editor. In versions prior to 1.3, Mermaid diagrams rendered in the chat box permit embedded images. When an attacker first succeeds in prompt injection through malicious untrusted content such as web content, uploaded images, or source code, the injected content can cause Mermaid to render an attacker-controlled image URL. Cursor then fetches that external image, which can be used as an exfiltration channel to transmit sensitive information to a third-party server under attacker control. The issue can also be triggered by a malicious or backdoored model output. The vulnerability is therefore an indirect data exfiltration flaw arising from unsafe rendering of Mermaid content in a privileged application context.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.