CVE-2026-18536Data::Entropy versions before 0.010 for Perl read remote entropy sources over plain HTTP.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-319, CWE-353
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Aug 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
rrwo data::entropy rrwo:data::entropy | before 0.010 | NVD |
References
- https://github.com/robrwo/Data-Entropy/security/advisories/GHSA-845w-rcqw-jwvvvendor-advisory
- https://metacpan.org/release/RRWO/Data-Entropy-0.008/view/lib/Data/Entropy.pm#STATUSrelease-notes
- https://metacpan.org/release/RRWO/Data-Entropy-0.010/changesrelease-notes
- https://security.metacpan.org/docs/guides/random-data-for-security.htmlthird-party-advisory
- http://www.openwall.com/lists/oss-security/2026/08/01/8mailing-list, third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.