VDB
CVE-2026-25793
CVE-2026-25793
PUBLISHED
CVSS 7.599999904632568 HIGH
Nebula is a scalable overlay networking tool. In versions from 1.7.0 to 1.10.2, when using P256 certificates (which is not the default configuration), it is possible to evade a blocklist entry created against the fingerprint of a certificate by using ECDSA Signature Malleability to use a copy of the certificate with a different fingerprint. This issue has been patched in version 1.10.3.
EPSS 0.01% · 0.8th percentile
Risk Scores
CVSS 4.0
7.599999904632568
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS Score
0.01%
0.8th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| slackhq | nebula | >= 1.7.0, < 1.10.3, *, >= 1.7.0, < 1.10.3 |
| github.com | slackhq/nebula | 1.7.0, 1.7.0, 1.7.0 |
| slack | nebula | 1.7.0, 1.7.0, 1.7.0 |
Timeline
- Feb 6, 2026 CVE Published
- Feb 7, 2026 CVE Updated
- Feb 7, 2026 EPSS Score
- Feb 8, 2026 PoC Published
- Feb 9, 2026 EPSS Score
- Feb 11, 2026 EPSS Score
- Feb 13, 2026 EPSS Score
- Feb 16, 2026 EPSS Score
- Feb 18, 2026 EPSS Score
- Feb 20, 2026 EPSS Score
- Feb 22, 2026 EPSS Score
- Feb 24, 2026 EPSS Score