givanz
Vvveb before 1.0.9.0 Cookie Forgery via PHP Type Juggling in generateCookie()
Not on CISA's list of exploited flaws, and not in the news we track.
CVE-2026-126377Critical9.2
Reading the vendor advisory
Black Shard's team can check your exposure to CVE-2026-126377 and take the fix off your plate.
Vvveb before 1.0.9.0 contains an authentication bypass vulnerability in generateCookie() in system/user/user.php that uses loose comparison to validate MD5 cookie hashes. Unauthenticated attackers can brute-force cookie values until the server's MD5 computation yields a 0e magic hash, then forge persistent cookies for account takeover.
Black Shard's team can check your exposure, take a fix off your plate or step in on a live incident.
Severity
9.2of 10, critical
Updated 13 Nov 2026, 12:01 UTC, 31 of 36 sources answering.
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