CVE-2026-18536
Description
AI Translation Available
Data::Entropy versions before 0.010 for Perl read remote entropy sources over plain HTTP.
The Data::Entropy::RawSource::RandomOrg and Data::Entropy::RawSource::RandomnumbersInfo remote sources are accessed over plain HTTP.
The Data::Entropy::RawSource::RandomOrg integrity check trivially matches any non-empty byte string.
Any on-path attacker, such as open WiFi, a compromised ISP, captive portal, or a hostile egress proxy substitutes the response and thereby chooses the bytes returned by rand_bits and rand_int for every application that selected one of these sources via with_entropy_source. The _checkbuf method response is equally attacker-controlled, so the retry/sleep behaviour is steerable too.
319
Cleartext Transmission of Sensitive Information
DraftCommon Consequences
Security Scopes Affected:
Integrity
Confidentiality
Potential Impacts:
Read Application Data
Modify Files Or Directories
Other
Applicable Platforms
Technologies:
Not Technology-Specific, Cloud Computing, Mobile, ICS/OT, System on Chip, Test/Debug Hardware
353
Missing Support for Integrity Check
DraftCommon Consequences
Security Scopes Affected:
Integrity
Other
Non-Repudiation
Potential Impacts:
Other
Hide Activities
Applicable Platforms
All platforms may be affected
https://github.com/robrwo/Data-Entropy/security/advisories/GHSA-845w-rcqw-jwvv
https://metacpan.org/release/RRWO/Data-Entropy-0.008/view/lib/Data/Entropy.pm#S…
https://metacpan.org/release/RRWO/Data-Entropy-0.010/changes
https://security.metacpan.org/docs/guides/random-data-for-security.html
http://www.openwall.com/lists/oss-security/2026/08/01/8