High severity7.3NVD Advisory· Published Jun 4, 2026· Updated Jun 8, 2026
CVE-2026-49942
CVE-2026-49942
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- Range: <=0.20
Patches
Vulnerability mechanics
References
3- nvd.nist.gov/vuln/detail/CVE-2025-40911nvdThird Party AdvisoryUS Government Resource
- nvd.nist.gov/vuln/detail/CVE-2026-45191nvdThird Party AdvisoryUS Government Resource
- metacpan.org/release/RRWO/Net-CIDR-Set-0.21/changesnvdRelease Notes
News mentions
0No linked articles in our index yet.