CVE-2025-71381

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-07-01. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

Hono before 4.10.2 (fixed in 4.10.3) contains a flaw in its CORS middleware: when the origin is not set to "*", the middleware copies the Vary header from the incoming request into the response. Because Vary is a response header that should be managed by the server, an attacker can supply arbitrary Vary values that are reflected into the response, potentially causing cache key pollution and inconsistent CORS enforcement in environments that rely on shared caches or proxies.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

June 30, 2026

Last Modified

July 2, 2026

Advisory Details (2)

Auto-updated Jul 1, 2026
Patch available. Sources: github.
generic

Hono - Vary Header Injection in CORS Middleware | Advisories | VulnCheck

https://www.vulncheck.com/advisories/hono-vary-header-injection-in-cors-middleware
github Patch Available

Vary Header Injection leading to potential CORS Bypass · Advisory · honojs/hono · GitHub

https://github.com/honojs/hono/security/advisories/GHSA-q7jf-gf43-6x6p

Vendor Advisories for CVE-2025-71381(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)
npm(1)
PackageVulnerable rangeFixed inDependents
hono—4.10.3—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 84× 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 142 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2025-71381?
CVE-2025-71381 is a medium vulnerability published on June 30, 2026. Hono before 4.10.2 (fixed in 4.10.3) contains a flaw in its CORS middleware: when the origin is not set to "*", the middleware copies the Vary header from the incoming request into the response. Because Vary is a response header that should be managed by the server, an attacker can supply arbitrary…
When was CVE-2025-71381 disclosed?
CVE-2025-71381 was first published in the National Vulnerability Database on June 30, 2026, with the most recent update on July 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-71381 actively exploited?
CVE-2025-71381 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 78.8% of all scored CVEs.
What is the CVSS score of CVE-2025-71381?
CVE-2025-71381 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2025-71381?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-71381, 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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