CVE-2026-114635

Traefik before v2.11.58 and v3.7.14 SNI Check Bypass via HTTP/2 Scheme

7.0 High

Traefik before v2.11.58 and v3.7.14 contains an authentication bypass vulnerability in its SNI check, which is skipped when request TLS state is nil. Unauthenticated clients can send HTTP/2 requests with the :scheme http pseudo-header over TLS on Go 1.27 builds to reach routers requiring client certificates without presenting one.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: None

Exploit likelihood

0.19%Unchanged since Oct 22, 2026

What each source reports

CVE List Score used 7.0

Traefik before v2.11.58 and v3.7.14 SNI Check Bypass via HTTP/2 Scheme

Record: CVE-2026-114635
CVSS 4.0: 7.0 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
CVSS 3.1: 8.7 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Weakness: CWE-288
Updated: 2026-11-04

EUVDEUVD-2026-107890 7.0

Record: EUVD-2026-107890
CVSS 4.0: 7.0 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Updated: 2026-11-04

GitHub AdvisoriesGHSA-m6hw-6pp7-2ffc 7.0

Traefik before v2.11.58 and v3.7.14 contains an authentication bypass vulnerability in its SNI...

Record: GHSA-m6hw-6pp7-2ffc
CVSS 4.0: 7.0 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 8.7 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Weakness: CWE-288
Updated: 2026-11-02

NVD 7.0

Record: CVE-2026-114635
CVSS 4.0: 7.0 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 8.7 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Weakness: CWE-288
Updated: 2026-11-04

OSV 7.0

Traefik before v2.11.58 and v3.7.14 SNI Check Bypass via HTTP/2 Scheme

Record: CVE-2026-114635
CVSS 4.0: 7.0 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Weakness: CWE-288
Updated: 2026-11-05

OSVopenSUSE-SU-2026:12281-1 No score

traefik-3.7.16-1.1 on GA media

These are all security issues fixed in the traefik-3.7.16-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2026:12281-1
Updated: 2026-11-02

Affected products

traefik

Affected packages

Affected packages
Package	Affected	Fixed
`traefik` openSUSE:Tumbleweed From an advisory covering 9 CVEs	before 3.7.16-1.1	3.7.16-1.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts	EUVD, NVD, OSV
Nov 4, 2026	facts	CVE List
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-114635 is a high vulnerability (CVSS 7.0) in Traefik, published October 22, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.19%, the 8th percentile. No source names a fixed version.

References

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