Traefik is an open-source edge router that makes publishing services a fun and easy experience. Prior to 2.11.54, 3.6.25, and 3.7.10, cross-namespace @kubernetescrd references are not rejected for TraefikService backend references resolved by the service resolver. A tenant confined by RBAC to a single namespace can therefore bind its own router to a TraefikService owned by another namespace and expose or reroute that namespace's backend, defeating the namespace isolation allowCrossNamespace=false is meant to enforce. This issue is fixed in version 2.11.54, 3.6.25, 3.7.10.
CVE-2026-71325
This medium-severity CVE scores 4.4 under NVD CVSS v3. EPSS exploit probability: 0.2% (4th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 4.4
- EG Score
- 4.4MEDIUMmedium confidence
- EG Risk
- 20EG Risk 20/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity44% × 45%Exploitation0% × 40%Automatability0% × 15%CISA SSVC: Track at every mission impact level.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 0.2%
- EPSS %ILE
- 4th
- KEV
- Not listed
CISA SSVCTrack at every mission impact level.
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
August 6, 2026
Last Modified
September 16, 2026
Advisory Details (5)
Auto-updated Aug 6, 2026`allowCrossNamespace=false` bypass via `@kubernetescrd` TraefikService backendRef · Advisory · traefik/traefik · GitHub
https://github.com/traefik/traefik/security/advisories/GHSA-62fc-8686-hfmqv3.7.10
Patch available: traefik/traefik v3.7.10
https://github.com/traefik/traefik/releases/tag/v3.7.10v3.6.25
Patch available: traefik/traefik v3.6.25
https://github.com/traefik/traefik/releases/tag/v3.6.25v2.11.54
Patch available: traefik/traefik v2.11.54
https://github.com/traefik/traefik/releases/tag/v2.11.54commit 65ebf4b47fbd (traefik/traefik)
Fix landed in traefik/traefik commit 65ebf4b47fbd — awaiting tagged release
https://github.com/traefik/traefik/commit/65ebf4b47fbdc33e3856803a5844a404e094d52dVendor Advisories for CVE-2026-71325(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(3 across 1 ecosystem)
Go(3)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| github.com/traefik/traefik | — |
| — |
| github.com/traefik/traefik/v2 | — |
| — |
| github.com/traefik/traefik/v3 | — |
| — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 41× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-10-05 08:26 UTCEG score recompute
- 2026-10-04 23:22 UTCEPSS rescore
- 2026-10-04 05:50 UTCEG score recompute
- 2026-10-03 14:26 UTCEPSS rescore
- 2026-10-02 17:56 UTCEPSS rescore
- 2026-10-02 09:40 UTCEG score recompute
- 2026-10-01 19:50 UTCEPSS rescore
- 2026-10-01 01:44 UTCEG score recompute
- 2026-09-30 15:03 UTCEPSS rescore
- 2026-09-29 05:54 UTCEG score recompute
- 2026-09-28 13:52 UTCEPSS rescore
- 2026-09-27 17:29 UTCEG score recompute
- 2026-09-27 13:48 UTCEPSS rescore
- 2026-09-26 15:59 UTCEPSS rescore
- 2026-09-25 04:22 UTCEG score recompute
- 2026-09-23 17:54 UTCEPSS rescore
- 2026-09-23 15:59 UTCEG score recompute
- 2026-09-22 14:18 UTCEG score recompute
- 2026-09-21 21:09 UTCEPSS rescore
- 2026-09-21 12:49 UTCEG score recompute
- 2026-09-20 20:16 UTCEPSS rescore
- 2026-09-20 04:39 UTCEG score recompute
- 2026-09-19 03:11 UTCEG score recompute
- 2026-09-18 19:28 UTCEPSS rescore
- 2026-09-18 00:57 UTCEG score recompute
Show 67 moreShow fewer
- 2026-09-16 21:10 UTCEG score recompute▼ 0.40
- 2026-09-16 21:01 UTCNVD updateCVSS v3 → 4.4
- 2026-09-16 14:08 UTCEPSS rescore
- 2026-09-15 09:29 UTCEG score recompute
- 2026-09-15 03:12 UTCEPSS rescore
- 2026-09-14 07:59 UTCEG score recompute
- 2026-09-13 06:32 UTCEG score recompute
- 2026-09-12 15:02 UTCEPSS rescore
- 2026-09-12 05:05 UTCEG score recompute
- 2026-09-11 14:53 UTCEPSS rescore
- 2026-09-11 03:38 UTCEG score recompute
- 2026-09-10 09:35 UTCEPSS rescore
- 2026-09-10 02:10 UTCEG score recompute
- 2026-09-08 22:01 UTCEPSS rescore
- 2026-09-07 17:56 UTCEG score recompute
- 2026-09-06 13:48 UTCEPSS rescore
- 2026-09-05 10:40 UTCEG score recompute
- 2026-09-03 06:15 UTCEG score recompute
- 2026-09-02 14:12 UTCEPSS rescore
- 2026-09-02 00:02 UTCEG score recompute
- 2026-09-01 13:54 UTCEPSS rescore
- 2026-09-01 04:40 UTCEPSS rescore
- 2026-08-31 22:35 UTCEG score recompute
- 2026-08-30 19:17 UTCEPSS rescore
- 2026-08-30 12:10 UTCEG score recompute
- 2026-08-30 01:22 UTCEPSS rescore
- 2026-08-29 10:40 UTCEG score recompute
- 2026-08-28 21:42 UTCEPSS rescore
- 2026-08-27 22:25 UTCEG score recompute
- 2026-08-25 19:30 UTCEG score recompute
- 2026-08-25 13:49 UTCEPSS rescore
- 2026-08-24 18:03 UTCEG score recompute
- 2026-08-23 16:35 UTCEG score recompute
- 2026-08-23 00:19 UTCEPSS rescore
- 2026-08-22 15:08 UTCEG score recompute
- 2026-08-21 23:49 UTCEPSS rescore
- 2026-08-21 13:40 UTCEG score recompute
- 2026-08-20 22:56 UTCEPSS rescore
- 2026-08-20 12:10 UTCEG score recompute
- 2026-08-19 17:04 UTCEPSS rescore
- 2026-08-19 10:43 UTCEG score recompute
- 2026-08-18 13:49 UTCEPSS rescore
- 2026-08-18 13:49 UTCEPSS rescore
- 2026-08-18 09:09 UTCEG score recompute
- 2026-08-17 13:47 UTCEPSS rescore
- 2026-08-17 07:38 UTCEG score recompute
- 2026-08-16 14:56 UTCEPSS rescore
- 2026-08-16 14:56 UTCEPSS rescore
- 2026-08-16 06:11 UTCEG score recompute
- 2026-08-16 02:15 UTCEPSS rescore
- 2026-08-15 04:44 UTCEG score recompute
- 2026-08-15 01:31 UTCEPSS rescore
- 2026-08-14 03:16 UTCEG score recompute
- 2026-08-13 22:00 UTCEPSS rescore
- 2026-08-13 01:49 UTCEG score recompute
- 2026-08-12 13:51 UTCEPSS rescore
- 2026-08-12 00:22 UTCEG score recompute
- 2026-08-11 00:00 UTCEPSS rescore
- 2026-08-09 21:22 UTCEG score recompute
- 2026-08-09 13:47 UTCEPSS rescore
- 2026-08-08 19:55 UTCEG score recompute
- 2026-08-08 16:37 UTCEPSS rescore
- 2026-08-07 18:27 UTCEG score recompute
- 2026-08-07 17:27 UTCEG score recompute
- 2026-08-06 22:37 UTCEG score recompute▲ 4.80
- 2026-08-06 22:37 UTCNVD updateCVSS v3 → 4.8 · CVSS v4 → 4.8
- 2026-08-06 17:07 UTCEG score recompute
Related CVEs(same product + same CWE)
Same product
10 shownGo:github.com/traefik/traefik/v3
Frequently asked(5)
What is CVE-2026-71325?
When was CVE-2026-71325 disclosed?
Is CVE-2026-71325 actively exploited?
What is the CVSS score of CVE-2026-71325?
How do I remediate CVE-2026-71325?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-71325
Is Your Infrastructure Affected by CVE-2026-71325?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.