CVE-2026-49942Net::CIDR::Set versions through 0.20 for Perl did not validate network masks.
Updated under an hour ago ()
Does this affect you?
It affects rrwo net::cidr::set. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Net::CIDR::Set versions through 0.20 for Perl did not validate network masks. The mask portion of a network mask could contain Unicode digits such as the Arabic-Indic One (U+0661), or non-digits, which were ignored. This could allow network masks to accept larger networks. Leading zeros were also accepted, but treated as decimal instead of octal. This could lead to confusion about what networks are acceptable.
- CVSS
- 7.3 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- Weakness (CWE)
- CWE-1289
- 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
- Jul 22, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
rrwo net::cidr::set rrwo:net::cidr::set | before 0.21 | NVD |
References
- https://metacpan.org/release/RRWO/Net-CIDR-Set-0.21/changesrelease-notes
- https://nvd.nist.gov/vuln/detail/CVE-2025-40911third-party-advisory, us-government-resource
- https://nvd.nist.gov/vuln/detail/CVE-2026-45191third-party-advisory, us-government-resource
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.