CVE-2026-67182

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory published 2026-07-28. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
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%CVSS: 7.5Exploit: None knownExposed: 0

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

Rouille 0.3.3 through 3.6.2 contains an HTTP request smuggling vulnerability that allows remote attackers to bypass access controls by injecting bare line feed characters (0x0A) into client-supplied request header values that are copied verbatim to upstream connections without validation. Attackers can craft a header value containing a complete additional HTTP request that is interpreted as a separate request by backends such as Go net/http and Python http.server, causing the backend to process a smuggled request with attacker-chosen method, path, and headers that bypasses the rouille handler's access control logic.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

July 28, 2026

Last Modified

July 30, 2026

Advisory Details (2)

Auto-updated Jul 28, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Rouille 0.3.3 - 3.6.2 HTTP Request Smuggling via proxy Header Injection | Advisories | VulnCheck

https://www.vulncheck.com/advisories/rouille-http-request-smuggling-via-proxy-header-injection
generic🟡 PoC Available

GitHub - theopaid/HTTP-Request-Smuggling-Enables-Front-End-Access-Control-Bypass-rouille-: Security Advisory: HTTP Request Smuggling Enables Front-End Access Control Bypass (rouille) · GitHub

https://github.com/theopaid/HTTP-Request-Smuggling-Enables-Front-End-Access-Control-Bypass-rouille-

Vendor Advisories for CVE-2026-67182(1)

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

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
rust-rouille3.6.2+20250617+ds-1, 3.6.2+20250617+ds-2, 3.6.2+20250617+ds-3——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 88× 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 177 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-67182?
CVE-2026-67182 is a high vulnerability published on July 28, 2026. Rouille 0.3.3 through 3.6.2 contains an HTTP request smuggling vulnerability that allows remote attackers to bypass access controls by injecting bare line feed characters (0x0A) into client-supplied request header values that are copied verbatim to upstream connections without validation. Attackers…
When was CVE-2026-67182 disclosed?
CVE-2026-67182 was first published in the National Vulnerability Database on July 28, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-67182 actively exploited?
CVE-2026-67182 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 64.5% of all scored CVEs.
What is the CVSS score of CVE-2026-67182?
CVE-2026-67182 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-67182?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-67182, 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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