CVE-2026-25050 is a low severity vulnerability with a CVSS score of 0.0. Exploits are available; patches have been released and should be applied urgently.
Very low probability of exploitation
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
The NativeAuthenticationStrategy.authenticate() method is vulnerable to a timing attack that allows attackers to enumerate valid usernames (email addresses).
In packages/core/src/config/auth/native-authentication-strategy.ts, the authenticate method returns immediately if a user is not found:
const user = await this.userService.getUserByEmailAddress(ctx, data.username);
if (!user) {
return false; // Instant return (~1-5ms)
}
const passwordMatch = await this.verifyUserPassword(ctx, user.id, data.password);
// Password check takes ~200-400ms with bcrypt (12 rounds)
The significant timing difference (~200-400ms for bcrypt vs ~1-5ms for DB miss) allows attackers to reliably distinguish between existing and non-existing accounts.
Perform a dummy bcrypt check when user is not found to ensure consistent response times.
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