8.7

CVE-2026-114635: Traefik before v2.11.58 and v3.7.14 SNI Check Bypass via HTTP/2 Scheme

Analyzed
AliasesCGA-7hpv-xpcm-mwxqCGA-pwq3-6r77-32vx
Published 22-10-2026Last modified 04-11-2026

Vulnerability summary

CVE-2026-114635 is a high (CVSS 8.7) vulnerability in traefik. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8.5% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 0% (FIRST, 04-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
8.7/10
010
High · v3.1 (CVE.org)
EPSS score
0.19%
0%100%
Low · Change unavailable
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:12281-1

Timeline

  1. 22-10-2026
    PublishedVulnerability first disclosed.
  2. 04-11-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

22-10-202604-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard1 product
  • traefik-3.6All versions (No fix recorded)
Traefik1 product
  • traefik< 2.11.58 | ≥ 3.0.0, < 3.7.14
Wolfi1 product
  • traefik-3.6All versions (No fix recorded)

3 vendors · 3 products

References

2 links