VDB
CVE-2026-26994
CVE-2026-26994
PUBLISHED
CVSS 6.5 MEDIUM
uTLS ServerHellos are accepted without checking TLS 1.3 downgrade canaries
EPSS 0.30% · 22.9th percentile
Risk Scores
CVSS 3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS Score
0.30%
22.9th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| refraction-networking | utls | < 1.7.0, 0 |
| github.com | refraction-networking/utls | 0 |
Timeline
- Apr 23, 2025 CVE Published
- Feb 20, 2026 EPSS Score
- Feb 20, 2026 CVE Updated
- Feb 23, 2026 EPSS Score
- Feb 25, 2026 EPSS Score
- Feb 28, 2026 EPSS Score
- Mar 2, 2026 EPSS Score
- Mar 5, 2026 EPSS Score
- Mar 7, 2026 EPSS Score
- Mar 10, 2026 EPSS Score
- Mar 12, 2026 EPSS Score
- Mar 15, 2026 EPSS Score
References
- https://github.com/refraction-networking/utls/issues/181 discussion
- https://github.com/refraction-networking/utls/pull/337 fix
- https://github.com/refraction-networking/utls/commit/f8892761e2a4d29054264651d3a86fda83bc83f9 fix
- https://github.com/refraction-networking/utls/security/advisories/GHSA-pmc3-p9hx-jq96 patch
- https://nvd.nist.gov/vuln/detail/CVE-2026-26994 advisory
- https://github.com/refraction-networking/utls package