CVE-2026-35051

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 10.0 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 81% of all CVEs by exploit prediction. 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
Trending — 3 sources updated this week
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 10.0Exploit: None knownExposed: 0

A fix is available — apply it.

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is an authentication bypass vulnerability in Traefik's ForwardAuth middleware when trustForwardHeader=false is configured and Traefik is deployed behind a trusted upstream proxy. This issue has been patched in versions 2.11.43, 3.6.14, and 3.7.0-rc.2.

CVSS v3
10.0
EG Score
10.0(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: Track

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
Severity100% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

April 30, 2026

Last Modified

July 15, 2026

Advisory Details (8)

Auto-updated Jul 22, 2026
🔬 Proof of concept available. Patch available. Sources: github, redhat, github_release.
redhat Patch Available
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-35051.json
redhat

2464235 – (CVE-2026-35051) CVE-2026-35051 Traefik: github.com/traefik/traefik: Traefik: Authentication bypass in ForwardAuth middleware

https://bugzilla.redhat.com/show_bug.cgi?id=2464235
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-35051
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:21772
github Patch Available🟡 PoC Available

ForwardAuth trustForwardHeader=false allows spoofed X-Forwarded-Prefix to bypass auth · Advisory · traefik/traefik · GitHub

https://github.com/traefik/traefik/security/advisories/GHSA-6384-m2mw-rf54
github_release Patch Available

v3.7.0-rc.2

Patch available: traefik/traefik v3.7.0-rc.2 (pre-release)

https://github.com/traefik/traefik/releases/tag/v3.7.0-rc.2
github_release Patch Available

v3.6.14

Patch available: traefik/traefik v3.6.14

https://github.com/traefik/traefik/releases/tag/v3.6.14
github_release Patch Available

v2.11.43

Patch available: traefik/traefik v2.11.43

https://github.com/traefik/traefik/releases/tag/v2.11.43

Vendor Advisories for CVE-2026-35051(1)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatdevspaces/traefik-rhel9:17797867792026-05-28redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(3 across 1 ecosystem)
Go(3)
PackageVulnerable rangeFixed inDependents
github.com/traefik/traefik———
github.com/traefik/traefik/v2—2.11.43—
github.com/traefik/traefik/v3—3.7.0-rc.2—

Weakness Classification(2)

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 172 total refreshes for this CVE.

  1. 2026-07-27 14:13 UTCEPSS rescore
  2. 2026-07-26 14:54 UTCEPSS rescore
  3. 2026-07-26 14:54 UTCEPSS rescore
  4. 2026-07-25 14:18 UTCEPSS rescore
  5. 2026-07-25 14:18 UTCEPSS rescore
  6. 2026-07-24 14:17 UTCEPSS rescore
  7. 2026-07-24 14:17 UTCEPSS rescore
  8. 2026-07-23 14:18 UTCEPSS rescore
  9. 2026-07-23 14:18 UTCEPSS rescore
  10. 2026-07-23 03:10 UTCEG score recompute
  11. 2026-07-22 14:08 UTCEPSS rescore
  12. 2026-07-20 22:02 UTCOSV refresh
  13. 2026-07-20 17:08 UTCEPSS rescore
  14. 2026-07-19 14:31 UTCEPSS rescore
  15. 2026-07-19 02:29 UTCEPSS rescore
  16. 2026-07-18 10:04 UTCEPSS rescore
  17. 2026-07-16 17:03 UTCEPSS rescore
  18. 2026-07-15 16:57 UTCEPSS rescore
  19. 2026-07-15 16:57 UTCEPSS rescore
  20. 2026-07-15 02:25 UTCNVD updateCVSS v3 → 10 · severity → CRITICAL
  21. 2026-07-15 02:00 UTCEPSS rescore
  22. 2026-07-15 01:21 UTCMITRE cvelistV5CVSS v3 → 8.2 · severity → HIGH
  23. 2026-07-13 22:30 UTCEPSS rescore
  24. 2026-07-13 06:13 UTCEPSS rescore
  25. 2026-07-13 06:13 UTCEPSS rescore
Show 75 more
  1. 2026-07-12 05:46 UTCEPSS rescore
  2. 2026-07-11 08:27 UTCEPSS rescore
  3. 2026-07-09 19:10 UTCEPSS rescore
  4. 2026-07-08 15:15 UTCEPSS rescore
  5. 2026-07-07 13:46 UTCEPSS rescore
  6. 2026-07-06 16:27 UTCEPSS rescore
  7. 2026-07-06 16:27 UTCEPSS rescore
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-06 02:23 UTCEPSS rescore
  10. 2026-07-05 02:30 UTCEPSS rescore
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-01 15:06 UTCEPSS rescore
  13. 2026-06-30 23:22 UTCEPSS rescore
  14. 2026-06-29 14:06 UTCEPSS rescore
  15. 2026-06-29 14:06 UTCEPSS rescore
  16. 2026-06-28 14:07 UTCEPSS rescore
  17. 2026-06-28 14:07 UTCEPSS rescore
  18. 2026-06-28 04:56 UTCEPSS rescore
  19. 2026-06-28 04:56 UTCEPSS rescore
  20. 2026-06-27 03:08 UTCEPSS rescore
  21. 2026-06-25 13:49 UTCEPSS rescore
  22. 2026-06-25 13:49 UTCEPSS rescore
  23. 2026-06-24 14:05 UTCEPSS rescore
  24. 2026-06-23 21:33 UTCEPSS rescore
  25. 2026-06-23 21:33 UTCEPSS rescore
  26. 2026-06-22 14:25 UTCEPSS rescore
  27. 2026-06-22 14:25 UTCEPSS rescore
  28. 2026-06-21 14:56 UTCEPSS rescore
  29. 2026-06-21 14:56 UTCEPSS rescore
  30. 2026-06-21 01:59 UTCEPSS rescore
  31. 2026-06-19 19:25 UTCEPSS rescore
  32. 2026-06-19 19:25 UTCEPSS rescore
  33. 2026-06-18 17:52 UTCEPSS rescore
  34. 2026-06-18 17:52 UTCEPSS rescore
  35. 2026-06-17 17:53 UTCEPSS rescore
  36. 2026-06-16 17:52 UTCEPSS rescore
  37. 2026-06-15 17:49 UTCEPSS rescore
  38. 2026-06-15 05:44 UTCVendor advisory
  39. 2026-06-15 01:30 UTCVendor advisory
  40. 2026-06-14 23:18 UTCEPSS rescore
  41. 2026-06-14 20:40 UTCVendor advisory
  42. 2026-06-14 16:27 UTCVendor advisory
  43. 2026-06-14 09:15 UTCVendor advisory
  44. 2026-06-13 23:00 UTCEPSS rescore
  45. 2026-06-12 23:12 UTCEPSS rescore
  46. 2026-06-12 23:12 UTCEPSS rescore
  47. 2026-06-12 11:02 UTCVendor advisory
  48. 2026-06-12 06:41 UTCVendor advisory
  49. 2026-06-12 02:25 UTCVendor advisory
  50. 2026-06-11 22:11 UTCVendor advisory
  51. 2026-06-11 17:58 UTCVendor advisory
  52. 2026-06-11 14:00 UTCEPSS rescore
  53. 2026-06-11 13:45 UTCVendor advisory
  54. 2026-06-11 09:32 UTCVendor advisory
  55. 2026-06-11 04:47 UTCVendor advisory
  56. 2026-06-10 22:18 UTCEPSS rescore
  57. 2026-06-10 20:58 UTCVendor advisory
  58. 2026-06-10 16:33 UTCVendor advisory
  59. 2026-06-10 13:22 UTCEPSS rescore
  60. 2026-06-10 12:19 UTCVendor advisory
  61. 2026-06-10 08:06 UTCVendor advisory
  62. 2026-06-10 03:41 UTCVendor advisory
  63. 2026-06-09 23:28 UTCVendor advisory
  64. 2026-06-09 16:55 UTCVendor advisory
  65. 2026-06-09 12:42 UTCVendor advisory
  66. 2026-06-09 08:29 UTCVendor advisory
  67. 2026-06-09 03:53 UTCVendor advisory
  68. 2026-06-08 23:39 UTCVendor advisory
  69. 2026-06-08 14:51 UTCVendor advisory
  70. 2026-06-08 14:17 UTCEPSS rescore
  71. 2026-06-08 14:17 UTCEPSS rescore
  72. 2026-06-08 10:37 UTCVendor advisory
  73. 2026-06-08 06:24 UTCVendor advisory
  74. 2026-06-08 02:11 UTCVendor advisory
  75. 2026-06-07 21:58 UTCVendor advisory

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-35051?
CVE-2026-35051 is a critical vulnerability published on April 30, 2026. Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is an authentication bypass vulnerability in Traefik's ForwardAuth middleware when trustForwardHeader=false is configured and Traefik is deployed behind a trusted upstream proxy. This issue…
When was CVE-2026-35051 disclosed?
CVE-2026-35051 was first published in the National Vulnerability Database on April 30, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-35051 actively exploited?
CVE-2026-35051 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 81.3% of all scored CVEs.
What is the CVSS score of CVE-2026-35051?
CVE-2026-35051 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-35051?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-35051, 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

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