Weakness (CWE)
CWE-340: Generation of Predictable Numbers or Identifiers
The product uses a scheme that generates numbers or identifiers that are more predictable than required.
Source: MITRE CWE-340
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Critical 9.1
OpnForm Editable Submission Secret Derivation via Empty Hashids Salt
OpnForm derives editable-submission secrets from sequential row identifiers using Hashids with an empty default salt, allowing unauthenticated attackers to compute hashes for any submission. Attackers can read other respondents' full submission data through t…
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Critical 9.0CVE-2026-11374 Public exploit
Account Takeover via Predictable SSO Ticket Generation
In ManageEngine ADSelfService Plus, RecoveryManager Plus, M365 Manager Plus, and ADAudit Plus, the SSO tickets generated to authenticate that session could be predicted by an unauthenticated user, leading to account takeover.
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Critical 9.1
Mojolicious::Plugin::Web::Auth::OAuth2 versions through 0.17 for Perl have an insecure default state parameter
Mojolicious::Plugin::Web::Auth::OAuth2 versions through 0.17 for Perl have an insecure default state parameter. When no state generator is specified in the constructor, the module defaults to using a SHA-1 hash of predictable and low-entropy sources, includin…
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Critical 9.1
Apache::Session::Generate::ModUniqueId versions from 1.54 through 1.94 for Perl session ids are insecure
Apache::Session::Generate::ModUniqueId versions from 1.54 through 1.94 for Perl session ids are insecure. Apache::Session::Generate::ModUniqueId (added in version 1.54) uses the value of the UNIQUE_ID environment variable for the session id. The UNIQUE_ID var…
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Critical 9.1
Solstice::Session versions through 1440 for Perl generates session ids insecurely
Solstice::Session versions through 1440 for Perl generates session ids insecurely. The _generateSessionID method returns an MD5 digest seeded by the epoch time, a random hash reference, a call to the built-in rand() function and the process id. The same metho…
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Critical 9.8
HTTP::Session versions before 0.54 for Perl defaults to using insecurely generated session ids
HTTP::Session versions before 0.54 for Perl defaults to using insecurely generated session ids. HTTP::Session defaults to using HTTP::Session::ID::SHA1 to generate session ids using a SHA-1 hash seeded with the built-in rand function, the high resolution epoc…
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Critical 9.8
Amon2 versions before 6.17 for Perl use an insecure random_string implementation for security functions
Amon2 versions before 6.17 for Perl use an insecure random_string implementation for security functions. In versions 6.06 through 6.16, the random_string function will attempt to read bytes from the /dev/urandom device, but if that is unavailable then it gene…
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Critical 9.1
Apache::Session::Generate::MD5 versions through 1.94 for Perl create insecure session id
Apache::Session::Generate::MD5 versions through 1.94 for Perl create insecure session id. Apache::Session::Generate::MD5 generates session ids insecurely. The default session id generator returns a MD5 hash seeded with the built-in rand() function, the epoch …
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Critical 9.8
Plack::Middleware::Session::Simple versions before 0.05 for Perl generates session ids insecurely
Plack::Middleware::Session::Simple versions before 0.05 for Perl generates session ids insecurely. The default session id generator returns a SHA-1 hash seeded with the built-in rand function, the epoch time, and the PID. The PID will come from a small set of…
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Critical 9.8
Concierge::Sessions versions from 0.8.1 before 0.8.5 for Perl generate insecure session ids
Concierge::Sessions versions from 0.8.1 before 0.8.5 for Perl generate insecure session ids. The generate_session_id function in Concierge::Sessions::Base defaults to using the uuidgen command to generate a UUID, with a fallback to using Perl's built-in rand …
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Critical 9.1
Starch versions 0.14 and earlier generate session ids insecurely
Starch versions 0.14 and earlier generate session ids insecurely. The default session id generator returns a SHA-1 hash seeded with a counter, the epoch time, the built-in rand function, the PID, and internal Perl reference addresses. The PID will come from a…
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Critical 9.1
Predictable Session ID
The devices are vulnerable to session hijacking due to insufficient entropy in its session ID generation algorithm. The session IDs are predictable, with only 32,768 possible values per user, which allows attackers to pre-generate valid session IDs, leading t…