CVSS 3.1
9.1 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NCVE-2021-28918
Critical (9.1) in netmask project netmask. EPSS 15% chance of exploitation in the next 30 days. Fixed in netmask 1.1.0, 2.0.1.
Improper input validation of octal strings in netmask npm package v1.0.6 and below allows unauthenticated remote attackers to perform indeterminate SSRF, RFI, and LFI attacks on many of the dependent packages. A remote unauthenticated attacker can bypass packages relying on netmask to filter IPs and reach critical VPN or LAN hosts.
Severity
- EPSS
- 15% chance of exploitation in the next 30 days; higher than 96% of CVEs (scores of 2026-10-31)
- CWE
- CWE-704
- Published
- Modified
- Record from
- the NVD, synced
Affected
- netmask_project:netmask
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-4c7m-wxvm-r7gc | npm | netmask | <1.1.0 | 1.1.0 |
| GHSA-pch5-whg9-qr2r | npm | netmask | <2.0.1 | 2.0.1 |
References
- https://github.com/advisories/GHSA-pch5-whg9-qr2r
- https://github.com/rs/node-netmask
- https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-011.md
- https://rootdaemon.com/2021/03/29/vulnerability-in-netmask-npm-package-affects-280000-projects/
- https://security.netapp.com/advisory/ntap-20210528-0010/