CVE-2026-46351
BigBlueButton is an open-source virtual classroom. Prior to 3.0.21, bbb-web generated conference sessionToken values with insufficiently sec
CVSS
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EPSS
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Exploit Today
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Publicado: 16 jul 2026 · Última mod.: 16 jul 2026 · CWE-330
Sin historial EPSS suficiente todavía.
BigBlueButton is an open-source virtual classroom. Prior to 3.0.21, bbb-web generated conference sessionToken values with insufficiently secure randomness in bbb-common-web/src/main/java/org/bigbluebutton/api/Util.java and bigbluebutton-web/grails-app/controllers/org/bigbluebutton/web/controllers/ApiController.groovy, allowing a session user to predict other users' conference session tokens and impersonate them. This issue is fixed in version 3.0.21.
CVECVSSEPSSKEVRExplotTítuloVis.
CVE-2022-365369.8 CRÍ88.9%
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——12Crypt::DSA versions before 1.22 for Perl draw the DSA signing nonce and private key from a biased random generator, leading to private-key recovery.
"Crypt::DSA::Util::makerandom forces the high bit of every value it returns to obtain an exactly N-bit integer for prime search. The signing nonce and the private key are drawn from makerandom. Because the high bit is always set, the result is not uniform: its top bit is fixed, producing insecure values."
An attacker who collects a modest number of signatures under an affected key, together with the public key, can recover the private key with a lattice attack.
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