CVE-2026-67345

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-07-30. The CNA's CVSS baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 8.1Exploit: None knownExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

MaxKey through 4.1.12, fixed in commit ddbb72f, contains an insufficient redirect URI validation vulnerability in DefaultRedirectResolver.hostMatches() that allows remote attackers to hijack OAuth 2.0 authorization codes by supplying a crafted redirect_uri whose hostname suffix matches a registered URI without proper dot-boundary anchoring. Attackers who control a domain ending with the registered redirect URI hostname can social-engineer victims into clicking a crafted authorization URL, causing the authorization code to be issued to the attacker-controlled URI and exchanged for an access token granting access to the victim's identity.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100CISA SSVC

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
Severity81% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.
EPSS PROB
0.6%
EPSS %ILE
45th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 30, 2026

Last Modified

August 14, 2026

Advisory Details (3)

Auto-updated Jul 30, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

MaxKey 4.1.12 DefaultRedirectResolver OAuth Authorization Code Theft | Advisories | VulnCheck

https://www.vulncheck.com/advisories/maxkey-defaultredirectresolver-oauth-authorization-code-theft
github_commit

commit ddbb72fb24ab (dromara/MaxKey)

Fix landed in dromara/MaxKey commit ddbb72fb24ab — awaiting tagged release

https://github.com/dromara/MaxKey/commit/ddbb72fb24ab8e66aa422fb14b1177330bcffb45
generic

OAuth 2.0 redirect_uri bypass via subdomain prefix allows authorization code theft · Issue #269 · dromara/MaxKey · GitHub

https://github.com/dromara/MaxKey/issues/269

Vendor Advisories for CVE-2026-67345(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 15× in last 7d / 76× 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 222 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-67345?
CVE-2026-67345 is a high vulnerability published on July 30, 2026. MaxKey through 4.1.12, fixed in commit ddbb72f, contains an insufficient redirect URI validation vulnerability in DefaultRedirectResolver.hostMatches() that allows remote attackers to hijack OAuth 2.0 authorization codes by supplying a crafted redirect_uri whose hostname suffix matches a registered…
When was CVE-2026-67345 disclosed?
CVE-2026-67345 was first published on July 30, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-67345 actively exploited?
CVE-2026-67345 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (45th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-67345?
CVE-2026-67345 has a CVSS base score of 8.1 (the CNA's own assessment, by vulncheck; NVD's own analysis pending).
How do I remediate CVE-2026-67345?
An upstream fix for CVE-2026-67345 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-67345 are linked in the Vendor Advisories panel on this page.

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