CVE-2026-86287
Net::IP::LPM versions before 1.12 for Perl accept malformed prefix lengths
- State
- Published
- Severity
- 7.5 High
- Published
- Sep 7, 2026
- Updated
- Sep 8, 2026
- Reserved
- Sep 6, 2026
Description
Net::IP::LPM versions before 1.12 for Perl accept malformed prefix lengths.
Non-numeric and non-ASCII prefix lengths are accepted and treated as 0. Integers over 31 bits are silently truncated. A single malformed mask will poison the lookup table.
The result is that the lookup will silently succeed for every address. An allow-list will allow every address, and a deny-list will block every address.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
Weaknesses
- CWE-1287 Improper Validation of Specified Type of Input
Affected Products
| Product | Versions |
|---|---|
Net-IP-LPM |
|
References
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.