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CVE-2026-18536

Published: Aug 1, 2026Updated: Aug 7, 2026 Sources: CVE List NVDCWE-319
7.5HIGH
NVD MITRE
EPSS Score
0.2%
Top 94.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-319CWE-353

Affected Products

RRWO
aka crypt::saltedhash, net::cidr::set
Data::EntropyLibrary
OSS Libraries / generic-library
data\Library
OSS Libraries / generic-library

Exploitability

Official Patch Available
Workaround Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Collection
Credential Access
View detailed technique mapping

References

https://github.com/robrwo/Data-Entropy/security/advisories/GHSA-845w-rcqw-jwvv
github.com
https://metacpan.org/release/RRWO/Data-Entropy-0.010/changes
metacpan.org
https://metacpan.org/release/RRWO/Data-Entropy-0.008/view/lib/Data/Entropy.pm#STATUS
metacpan.org
and 2 more references View all →

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