CVE-2026-67309

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.7% (49th 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).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Traefik versions >= v3.7.0 and <= v3.7.7 contain a path traversal vulnerability in the Kubernetes Ingress NGINX provider's RewriteTarget middleware (generated from the nginx.ingress.kubernetes.io/rewrite-target annotation). When an Ingress path uses a regex that captures attacker-controlled text without requiring a path separator (e.g., path /api(.*) with rewrite target /$1), a crafted request such as /api../admin matches the public router, is rewritten to a dot-segment traversal path (/../admin), and is forwarded without post-replacement normalization validation. A backend that normalizes dot segments resolves the path to a protected endpoint (e.g., /admin) reachable only through a separate router secured with BasicAuth, DigestAuth, or ForwardAuth, resulting in route-level authentication bypass. The issue is fixed in v3.7.8.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100CISA 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 computed
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.7%
EPSS %ILE
49th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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 1, 2026

Last Modified

September 16, 2026

Advisory Details (3)

Auto-updated Aug 1, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
generic

Traefik v3.7.0 Path Traversal via RewriteTarget Authentication Bypass | Advisories | VulnCheck

https://www.vulncheck.com/advisories/traefik-path-traversal-via-rewritetarget-authentication-bypass
github_commit

commit 69259c3acc9d (traefik/traefik)

Fix landed in traefik/traefik commit 69259c3acc9d — awaiting tagged release

https://github.com/traefik/traefik/commit/69259c3acc9d4bdc065cb2e3b83336f7de3e7038
github Patch Available🟡 PoC Available

Kubernetes Ingress NGINX RewriteTarget Path Traversal Allows Route-Level Authentication Bypass · Advisory · traefik/traefik · GitHub

https://github.com/traefik/traefik/security/advisories/GHSA-8rxv-jg7p-wvg3

Vendor Advisories for CVE-2026-67309(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)
PackageVulnerable rangeFix by version rangeDependents
github.com/traefik/traefik—
  • every version on: no fix on record
—
github.com/traefik/traefik/v2—
  • every version on: no fix on record
—
github.com/traefik/traefik/v3—
  • 3.7.0 up to 3.7.8: fixed in 3.7.8
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 44× 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.

Showing the most recent 100 of 121 total refreshes for this CVE.

  1. 2026-10-05 17:43 UTCEPSS rescore
  2. 2026-10-04 23:48 UTCEG score recompute
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 06:25 UTCEG score recompute
  5. 2026-10-03 14:26 UTCEPSS rescore
  6. 2026-10-03 02:43 UTCEG score recompute
  7. 2026-10-02 17:56 UTCEPSS rescore
  8. 2026-10-02 10:28 UTCEG score recompute
  9. 2026-10-01 19:50 UTCEPSS rescore
  10. 2026-10-01 02:42 UTCEG score recompute
  11. 2026-09-30 15:03 UTCEPSS rescore
  12. 2026-09-29 06:46 UTCEG score recompute
  13. 2026-09-28 13:52 UTCEPSS rescore
  14. 2026-09-27 18:21 UTCEG score recompute
  15. 2026-09-27 13:48 UTCEPSS rescore
  16. 2026-09-26 15:59 UTCEPSS rescore
  17. 2026-09-25 04:50 UTCEG score recompute
  18. 2026-09-23 23:50 UTCEG score recompute
  19. 2026-09-23 17:54 UTCEPSS rescore
  20. 2026-09-22 21:32 UTCEG score recompute
  21. 2026-09-22 06:57 UTCEG score recompute
  22. 2026-09-20 20:59 UTCEG score recompute
  23. 2026-09-20 20:16 UTCEPSS rescore
  24. 2026-09-19 23:30 UTCEG score recompute
  25. 2026-09-19 03:57 UTCEG score recompute
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  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 01:14 UTCEG score recompute
  3. 2026-09-16 21:11 UTCEG score recompute▼ 0.30
  4. 2026-09-16 20:45 UTCNVD updateCVSS v3 → 7.5
  5. 2026-09-16 14:08 UTCEPSS rescore
  6. 2026-09-16 05:24 UTCEG score recompute
  7. 2026-09-16 05:15 UTCEPSS rescore
  8. 2026-09-13 17:32 UTCEG score recompute
  9. 2026-09-12 16:13 UTCEG score recompute
  10. 2026-09-11 14:55 UTCEG score recompute
  11. 2026-09-11 14:53 UTCEPSS rescore
  12. 2026-09-11 09:37 UTCEPSS rescore
  13. 2026-09-10 10:00 UTCEG score recompute
  14. 2026-09-09 06:56 UTCEG score recompute
  15. 2026-09-08 22:01 UTCEPSS rescore
  16. 2026-09-07 19:15 UTCEG score recompute
  17. 2026-09-07 16:01 UTCEPSS rescore
  18. 2026-09-06 20:45 UTCEG score recompute
  19. 2026-09-06 13:47 UTCEPSS rescore
  20. 2026-09-05 18:43 UTCEG score recompute
  21. 2026-09-05 15:31 UTCEPSS rescore
  22. 2026-09-04 16:18 UTCEG score recompute
  23. 2026-09-04 05:07 UTCEPSS rescore
  24. 2026-09-03 09:02 UTCEG score recompute
  25. 2026-09-02 14:12 UTCEPSS rescore
  26. 2026-09-01 22:23 UTCEG score recompute
  27. 2026-09-01 13:54 UTCEPSS rescore
  28. 2026-09-01 04:40 UTCEPSS rescore
  29. 2026-08-30 23:32 UTCEG score recompute
  30. 2026-08-30 19:17 UTCEPSS rescore
  31. 2026-08-30 10:53 UTCEG score recompute
  32. 2026-08-30 01:22 UTCEPSS rescore
  33. 2026-08-29 22:12 UTCEG score recompute
  34. 2026-08-28 21:42 UTCEPSS rescore
  35. 2026-08-28 00:57 UTCEG score recompute
  36. 2026-08-26 23:29 UTCEG score recompute
  37. 2026-08-26 14:47 UTCEPSS rescore
  38. 2026-08-25 22:08 UTCEG score recompute
  39. 2026-08-25 13:49 UTCEPSS rescore
  40. 2026-08-24 20:47 UTCEG score recompute
  41. 2026-08-23 06:49 UTCEG score recompute
  42. 2026-08-23 00:19 UTCEPSS rescore
  43. 2026-08-22 05:32 UTCEG score recompute
  44. 2026-08-21 23:49 UTCEPSS rescore
  45. 2026-08-21 04:11 UTCEG score recompute
  46. 2026-08-20 22:56 UTCEPSS rescore
  47. 2026-08-20 02:50 UTCEG score recompute
  48. 2026-08-19 17:04 UTCEPSS rescore
  49. 2026-08-19 01:30 UTCEG score recompute
  50. 2026-08-18 13:48 UTCEPSS rescore
  51. 2026-08-17 23:21 UTCEG score recompute
  52. 2026-08-17 13:47 UTCEPSS rescore
  53. 2026-08-16 22:03 UTCEG score recompute
  54. 2026-08-16 14:56 UTCEPSS rescore
  55. 2026-08-16 09:23 UTCEG score recompute
  56. 2026-08-15 08:06 UTCEG score recompute
  57. 2026-08-15 01:30 UTCEPSS rescore
  58. 2026-08-14 06:47 UTCEG score recompute
  59. 2026-08-13 22:00 UTCEPSS rescore
  60. 2026-08-12 16:51 UTCEG score recompute
  61. 2026-08-12 13:51 UTCEPSS rescore
  62. 2026-08-11 15:32 UTCEG score recompute
  63. 2026-08-11 02:53 UTCEG score recompute
  64. 2026-08-11 00:00 UTCEPSS rescore
  65. 2026-08-10 01:34 UTCEG score recompute
  66. 2026-08-09 13:47 UTCEPSS rescore
  67. 2026-08-07 22:58 UTCEG score recompute
  68. 2026-08-06 21:40 UTCEG score recompute
  69. 2026-08-06 13:47 UTCEPSS rescore
  70. 2026-08-06 09:01 UTCGHSA enrichment
  71. 2026-08-05 20:22 UTCEG score recompute
  72. 2026-08-05 20:22 UTCGHSA enrichment
  73. 2026-08-05 19:17 UTCEPSS rescore
  74. 2026-08-05 19:17 UTCEPSS rescore
  75. 2026-08-05 07:43 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2026-67309?
CVE-2026-67309 is a high vulnerability published on August 1, 2026. Traefik versions >= v3.7.0 and <= v3.7.7 contain a path traversal vulnerability in the Kubernetes Ingress NGINX provider's RewriteTarget middleware (generated from the nginx.ingress.kubernetes.io/rewrite-target annotation). When an Ingress path uses a regex that captures attacker-controlled text…
When was CVE-2026-67309 disclosed?
CVE-2026-67309 was first published on August 1, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-67309 actively exploited?
CVE-2026-67309 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (49th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-67309?
CVE-2026-67309 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-67309?
A fix for CVE-2026-67309 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-67309 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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