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CVE-2026-49942

Published: Jun 4, 2026Updated: Jun 8, 2026 Sources: CVE List NVDCWE-1289
NVD MITRE
7.3CVSSHIGH
EPSS Score
0.5%
Top 61.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-1289

Affected Products

net\rrwo
Library
OSS Libraries / generic-library
Net::CIDR::SetRRWO
Library
OSS Libraries / generic-library
rrwoOSS Librariesaka net::cidr::set, crypt::saltedhash

Exploitability

Official Patch Available

References

https://metacpan.org/release/RRWO/Net-CIDR-Set-0.21/changes
metacpan.org
https://nvd.nist.gov/vuln/detail/CVE-2025-40911
nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2026-45191
nvd.nist.gov

Timeline

Published
Jun 4, 2026
Last Updated
Jun 8, 2026

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