CVE-2026-38967

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-02. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.8Exploit: NoneExposed: 0

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

CrowCpp Crow through v1.3.1 HTTP is vulnerable to response header injection via unvalidated response header values.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
25.6%
KEV
Not listed

Published

June 2, 2026

Last Modified

July 22, 2026

Advisory Details (2)

Auto-updated Jun 20, 2026
Patch available. Sources: github_pr.
github_pr Patch Available

[Security] Prevent HTTP Response Header Injection by sanitizing CR/LF characters

Patch available: CrowCpp/Crow v1.3.2 (PR #1167 merged 2026-03-27)

https://github.com/CrowCpp/Crow/pull/1167
generic

[BUG] HTTP response header injection via unvalidated response header values · Issue #1165 · CrowCpp/Crow · GitHub

https://github.com/CrowCpp/Crow/issues/1165

Vendor Advisories for CVE-2026-38967(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 8× in last 7d / 92× 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 209 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-38967?
CVE-2026-38967 is a critical vulnerability published on June 2, 2026. CrowCpp Crow through v1.3.1 HTTP is vulnerable to response header injection via unvalidated response header values.
When was CVE-2026-38967 disclosed?
CVE-2026-38967 was first published in the National Vulnerability Database on June 2, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-38967 actively exploited?
CVE-2026-38967 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 25.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-38967?
CVE-2026-38967 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-38967?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-38967, 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.

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