CVE-2026-18536— Data::Entropy versions before 0.010 for Perl read remote entropy sources over plain HTTP
Possible ATT&CK Techniques 1AI
T1498 · Network Denial of ServiceAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| RRWO | Data::Entropy | < 0.010 | affected |
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I. Basic Information for CVE-2026-18536
Vulnerability Information
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Vulnerability Title
Data::Entropy versions before 0.010 for Perl read remote entropy sources over plain HTTP
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
敏感数据的明文传输
Source: CVE Program / CVE List V5
Vulnerability Title
RRWO Data::Entropy 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RRWO Data::Entropy是RRWO个人开发者的一款提供熵数据生成与处理的软件模块。 RRWO Data::Entropy 0.010之前版本存在加密问题漏洞，该漏洞源于通过明文HTTP读取远程熵源，且完整性检查可被任意非空字节串匹配，可能导致路径攻击者替换响应并控制rand_bits和rand_int返回的字节。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| RRWO | Data::Entropy | 0 ~ 0.010 | - |
II. Public POCs for CVE-2026-18536
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-18536 (1)
Vendor Advisories for CVE-2026-18536 (2)
- CPAN Author’s Guide to Random Data for Security | security.metacpan.orgtechnical-description
Other References for CVE-2026-18536 (1)
IV. Related Vulnerabilities
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Vulnerabilities found in Watson Data Intelligence
V. Comments for CVE-2026-18536
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