Brave’s new report flags the Perplexity AI Comet prompt-injection vulnerability as a real-world risk. The issue lets hidden web instructions hijack the assistant inside the Comet browser and run prompt injection. Perplexity AI says it shipped a fix, but Brave argues the flaw remained exploitable weeks later. For millions of global users, that means a live security vulnerability with possible user data exposure. For users, the Perplexity AI Comet prompt-injection vulnerability matters because it could expose queries, context, and browsing history.
Brave report highlights
The Brave report explains how hidden web instructions can embed commands that the agent obeys. At its core, the Perplexity AI Comet prompt-injection vulnerability lets untrusted content steer sensitive actions. By following those commands, Comet could leak context or metadata, raising user data exposure risks. Because the Perplexity AI Comet prompt-injection vulnerability piggybacks on normal browsing, it can go unnoticed.
Comet browser impact
The Comet browser runs across platforms, so the blast radius is global. If the Perplexity AI Comet prompt-injection vulnerability triggers on a popular site, many users could be affected. That risk is acute for traders researching tokens, wallets, or DeFi inside AI sidebars. Cross-tab behavior and cached context can widen exposure. This is not just theory; prompt injection is now a mainstream security vulnerability.
AI agent permissions
Excessive AI agent permissions make the Perplexity AI Comet prompt-injection vulnerability more dangerous. Granting tools, browsing, or clipboard access without strict controls invites abuse. Guardrails must treat untrusted pages as adversaries and sanitize every step. Without that, the Perplexity AI Comet prompt-injection vulnerability can escalate from passive reading to active data exfiltration.
Patch status debate
Perplexity AI says fixes shipped, but Brave’s testing disputes the patch status. If the Perplexity AI Comet prompt-injection vulnerability remains exploitable, disclosure timelines and regression tests matter. Vendors should publish clear change logs, test suites, and dates. Independent validation restores trust after any Perplexity AI Comet prompt-injection vulnerability claim of resolution.
Stronger security testing
Security testing must shift left for agents that browse the open web. Red-team prompt injection, fuzz tool use, and monitor for anomalies in production. Our recent coverage of the Oneflip Rowhammer exploit shows how fast novel attacks move. Treat the Perplexity AI Comet prompt-injection vulnerability as a wake-up call to harden models, sandboxes, and permissions. User education, safe-mode defaults, and scoped tool access can blunt the Perplexity AI Comet prompt-injection vulnerability even before perfect fixes land.
Frequently asked questions about Perplexity AI Comet prompt-injection vulnerability (FAQ)
What is the Perplexity AI Comet prompt-injection vulnerability?
The Perplexity AI Comet prompt-injection vulnerability lets hidden instructions on a page direct the agent. Malicious content can push the assistant to reveal context, follow unsafe links, or run unintended actions.
Did Perplexity AI patch it?
Perplexity says it deployed fixes, but Brave’s follow-up found the Perplexity AI Comet prompt-injection vulnerability still exploitable in tests. Users should assume partial risk until independent verification confirms the patch status.
How can I protect my data?
Until the Perplexity AI Comet prompt-injection vulnerability is conclusively fixed, browse with limited permissions, disable risky tools, and avoid logging sensitive queries in the same session. Keep your browser updated and use strict privacy settings.
Why should crypto users care?
Researching tokens, protocols, or wallets often happens in-browser. That raises exposure if the Perplexity AI Comet prompt-injection vulnerability fires on a site you visit. A hijacked agent could leak search context or mislead you with manipulated results.
