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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-18536 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://www.openwall.com/lists/oss-security/2026/08/01/8 CVE
https://github.com/robrwo/Data-Entropy/security/advisories/GHSA-845w-rcqw-jwvv CPANSec
https://metacpan.org/release/RRWO/Data-Entropy-0.008/view/lib/Data/Entropy.pm#STATUS CPANSec
https://metacpan.org/release/RRWO/Data-Entropy-0.010/changes CPANSec
https://security.metacpan.org/docs/guides/random-data-for-security.html CPANSec

Weakness Enumeration

CWE-ID CWE Name Source
CWE-319 Cleartext Transmission of Sensitive Information CPANSec  
CWE-353 Missing Support for Integrity Check CPANSec  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-18536
NVD Published Date:
08/01/2026
NVD Last Modified:
08/01/2026
Source:
CPANSec