CVE-2026-65602

MEDIUMPre-NVD 5.35.3
EchelonGraph scoreLOW confidence

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). 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).

Triggered by: NVD CVSS baseline
Sources: secondary
Trending — 3 sources updated this week
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: —CVSS: 5.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Traefik 3.6.0 through 3.6.22 and 3.7.0 through 3.7.6 fail to enforce the crossProviderNamespaces allowlist for IngressRouteTCP service serversTransport references (the allowlist was only enforced for HTTP serversTransport references). A low-privileged Kubernetes user in a namespace not listed in crossProviderNamespaces can set serversTransport: foo@file on an IngressRouteTCP service, causing Traefik to accept the forbidden cross-provider reference and use a file-provider TCPServersTransport — including privileged backend mTLS client certificates, SPIFFE identity, or PROXY-protocol settings. This is fixed in 3.6.23 and 3.7.7.

CVSS v3
5.3
EG Score
5.3(low)
EPSS
—
KEV
Not listed

Published

July 22, 2026

Last Modified

July 22, 2026

Advisory Details (3)

Auto-updated Jul 22, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
generic

Traefik before 3.6.23 IngressRouteTCP ServersTransport Namespace Bypass | Advisories | VulnCheck

https://www.vulncheck.com/advisories/traefik-before-ingressroutetcp-serverstransport-namespace-bypass
github_commit

commit 26c96a3935ca (traefik/traefik)

Fix landed in traefik/traefik commit 26c96a3935ca — awaiting tagged release

https://github.com/traefik/traefik/commit/26c96a3935cafb473f4a5bae1886560d9aa4e4f0
github Patch Available🟡 PoC Available

Traefik CRD IngressRouteTCP ServersTransport Cross-Provider Namespace Bypass · Advisory · traefik/traefik · GitHub

https://github.com/traefik/traefik/security/advisories/GHSA-42cj-m3vj-89wv

Vendor Advisories for CVE-2026-65602(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 83× in last 7d / 83× 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.

  1. 2026-07-22 14:58 UTCEG score recompute
  2. 2026-07-22 14:58 UTCGHSA enrichment
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  1. 2026-07-22 14:08 UTCGHSA enrichment
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  55. 2026-07-22 13:21 UTCGHSA enrichment
  56. 2026-07-22 13:21 UTCGHSA enrichment
  57. 2026-07-22 11:32 UTCEG score recompute
  58. 2026-07-22 11:32 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2026-65602?
CVE-2026-65602 is a medium vulnerability published on July 22, 2026. Traefik 3.6.0 through 3.6.22 and 3.7.0 through 3.7.6 fail to enforce the crossProviderNamespaces allowlist for IngressRouteTCP service serversTransport references (the allowlist was only enforced for HTTP serversTransport references). A low-privileged Kubernetes user in a namespace not listed in…
When was CVE-2026-65602 disclosed?
CVE-2026-65602 was first published in the National Vulnerability Database on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-65602?
CVE-2026-65602 has a CVSS v3 base score of 5.3 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-65602?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-65602, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-65602

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