CVE-2026-18536

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Source
https://cve.org/CVERecord?id=CVE-2026-18536
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-18536.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-18536
Aliases
  • GHSA-845w-rcqw-jwvv
Downstream
Published
2026-08-01T10:35:38.392Z
Modified
2026-08-12T03:51:11.025559074Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
Data::Entropy versions before 0.010 for Perl read remote entropy sources over plain HTTP
Details

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 randbits and randint for every application that selected one of these sources via withentropysource. The _checkbuf method response is equally attacker-controlled, so the retry/sleep behaviour is steerable too.

Database specific 
{
    "cna_assigner": "CPANSec",
    "cwe_ids": [
        "CWE-319",
        "CWE-353"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18536.json"
}
References

Affected packages

Git / github.com/robrwo/data-entropy

Affected ranges

Type
GIT
Repo
https://github.com/robrwo/data-entropy
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a07c1b739206e29cb0b56ccc0583be3cdabbe202
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:rrwo:data\\:\\:entropy:*:*:*:*:*:perl:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.010"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

v0.*
v0.007
v0.008
v0.009

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-18536.json"