Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses
Published Jun 4, 2026
7.5
HIGHCVSS 3.1
EPSS 0.49%
Description
Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses.
The add method called the _encode method to parse addresses. If the addresses did not look like netmasks or network ranges, then they were assumed to single IP addresses and passed back to itself as a 32-bit or 128-bit netmask.
If the argument was not a well-formed IP address, then this would lead to indefinite recursion.
An attacker could use this to cause a denial of service.
Affected products
-
- Version 0StatusaffectedConstraints<=0.20
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| RRWO | Net::CIDR::Set | unaffected |
|
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
Upgrade to version 0.21 of later.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Jun 4, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Jun–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.49% (0.00493) | 40.08th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.49% (0.00494) | 38.27th | v5 (v2026.06.15) |
| Jun 5, 2026 | 0.04% (0.00044) | 14.00th | v4 (v2025.03.14) |
References (2)
- http://www.openwall.com/lists/oss-security/2026/06/04/11 Mailing ListThird Party Advisory
- https://metacpan.org/release/RRWO/Net-CIDR-Set-0.21/changes release-notesRelease Notes
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2026/06/04/11 | Mailing ListThird Party Advisory | |
| https://metacpan.org/release/RRWO/Net-CIDR-Set-0.21/changes | release-notesRelease Notes |
Change history (0)
No recorded changes yet.