CVE-2026-45191
medium
CVSS v3
6.5
CVSS v4 NEW
—
VIR risk
6.5
Description
Net::CIDR::Lite versions before 0.24 for Perl does not properly consider extraneous zero characters in CIDR mask values, which may allow IP ACL bypass. Mask forms like "/00" and "/01" pass validation and parse to the same prefix as their unpadded value. See also CVE-2026-45190.
Predictions
Exploit likelihood
75%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Mixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Affected | — |
| sid | Fixed | 0.24-1 |
| forky | Fixed | 0.24-1 |
| bullseye | Affected | — |
| bookworm | Affected | — |
References
- https://github.com/stigtsp/Net-CIDR-Lite/commit/24e2c439ec405e5256024b9acefd4f7008c5ed0c.patch
- https://metacpan.org/release/STIGTSP/Net-CIDR-Lite-0.24/changes
- https://www.cve.org/CVERecord?id=CVE-2026-45190
- https://security-tracker.debian.org/tracker/CVE-2026-45191
- https://www.suse.com/security/cve/CVE-2026-45191.html
CWEs
CWE-1289
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.