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 — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 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 PROB
0%
EPSS %ILE
26%
KEV
Not listed

Published

June 2, 2026

Last Modified

July 22, 2026

Advisory Details (2)

Auto-updated Sep 12, 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 11× in last 7d / 50× 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 392 total refreshes for this CVE.

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

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 0% probability of exploitation in the next 30 days, which ranks it in the top 73.7% of all scored CVEs.
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.

Dependency Blast Radius

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