CVE-2026-18266

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

Score 5.4 from GitHub Security Advisory published 2026-07-29. a secondary CVSS source baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0

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

Dify AI Workflow oauth_redirect_url Open Redirect Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Dify. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the OAuth flow handling in the AppInitializer component. An attacker can force a redirection to a site that serves malicious content. An attacker can leverage this vulnerability to disclose information in the context of the application. Was ZDI-CAN-29196.

CVSS v3
5.4
EG Score
5.4(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
16%
KEV
Not listed

Published

July 29, 2026

Last Modified

July 30, 2026

Advisory Details (1)

Auto-updated Jul 29, 2026
No patch confirmed yet.
generic

ZDI-26-452 - TrendAI™ Zero Day Initiative™ (ZDI)

https://www.zerodayinitiative.com/advisories/ZDI-26-452/

Vendor Advisories for CVE-2026-18266(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 17× in last 7d / 83× 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.

  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 23:09 UTCEG score recompute
  3. 2026-08-29 23:09 UTCGHSA enrichment
  4. 2026-08-28 21:41 UTCEPSS rescore
  5. 2026-08-28 01:44 UTCEG score recompute
  6. 2026-08-28 01:44 UTCGHSA enrichment
  7. 2026-08-27 14:25 UTCEPSS rescore
  8. 2026-08-27 03:43 UTCEG score recompute
  9. 2026-08-27 03:43 UTCGHSA enrichment
  10. 2026-08-26 14:46 UTCEPSS rescore
  11. 2026-08-26 05:43 UTCEG score recompute
  12. 2026-08-26 05:43 UTCGHSA enrichment
  13. 2026-08-25 13:48 UTCEPSS rescore
  14. 2026-08-25 07:43 UTCEG score recompute
  15. 2026-08-25 07:42 UTCGHSA enrichment
  16. 2026-08-24 09:42 UTCGHSA enrichment
  17. 2026-08-23 11:41 UTCGHSA enrichment
  18. 2026-08-22 13:41 UTCEG score recompute
  19. 2026-08-22 13:41 UTCGHSA enrichment
  20. 2026-08-21 23:49 UTCEPSS rescore
  21. 2026-08-21 15:40 UTCEG score recompute
  22. 2026-08-21 15:40 UTCGHSA enrichment
  23. 2026-08-20 22:55 UTCEPSS rescore
  24. 2026-08-20 17:38 UTCGHSA enrichment
  25. 2026-08-19 19:38 UTCEG score recompute
Show 64 more
  1. 2026-08-19 19:38 UTCGHSA enrichment
  2. 2026-08-19 17:03 UTCEPSS rescore
  3. 2026-08-18 20:49 UTCEG score recompute
  4. 2026-08-18 20:49 UTCGHSA enrichment
  5. 2026-08-18 13:48 UTCEPSS rescore
  6. 2026-08-17 22:50 UTCEG score recompute
  7. 2026-08-17 22:50 UTCGHSA enrichment
  8. 2026-08-17 13:47 UTCEPSS rescore
  9. 2026-08-17 00:50 UTCEG score recompute
  10. 2026-08-17 00:50 UTCGHSA enrichment
  11. 2026-08-16 14:56 UTCEPSS rescore
  12. 2026-08-16 02:50 UTCEG score recompute
  13. 2026-08-16 02:50 UTCGHSA enrichment
  14. 2026-08-16 02:14 UTCEPSS rescore
  15. 2026-08-15 04:50 UTCEG score recompute
  16. 2026-08-15 04:50 UTCGHSA enrichment
  17. 2026-08-15 01:30 UTCEPSS rescore
  18. 2026-08-14 06:50 UTCEG score recompute
  19. 2026-08-14 06:50 UTCGHSA enrichment
  20. 2026-08-13 22:00 UTCEPSS rescore
  21. 2026-08-13 08:50 UTCEG score recompute
  22. 2026-08-13 08:50 UTCGHSA enrichment
  23. 2026-08-12 13:50 UTCEPSS rescore
  24. 2026-08-12 10:50 UTCEG score recompute
  25. 2026-08-12 10:50 UTCGHSA enrichment
  26. 2026-08-11 13:42 UTCEPSS rescore
  27. 2026-08-11 12:49 UTCEG score recompute
  28. 2026-08-11 12:49 UTCGHSA enrichment
  29. 2026-08-11 00:00 UTCEPSS rescore
  30. 2026-08-10 14:49 UTCGHSA enrichment
  31. 2026-08-09 16:49 UTCEG score recompute
  32. 2026-08-09 16:49 UTCGHSA enrichment
  33. 2026-08-09 13:46 UTCEPSS rescore
  34. 2026-08-08 18:49 UTCEG score recompute
  35. 2026-08-08 18:49 UTCGHSA enrichment
  36. 2026-08-08 16:37 UTCEPSS rescore
  37. 2026-08-07 20:49 UTCEG score recompute
  38. 2026-08-07 20:49 UTCGHSA enrichment
  39. 2026-08-06 22:49 UTCGHSA enrichment
  40. 2026-08-06 00:40 UTCEG score recompute
  41. 2026-08-06 00:40 UTCGHSA enrichment
  42. 2026-08-05 19:17 UTCEPSS rescore
  43. 2026-08-05 02:40 UTCEG score recompute
  44. 2026-08-05 02:40 UTCGHSA enrichment
  45. 2026-08-04 15:10 UTCEPSS rescore
  46. 2026-08-04 10:38 UTCEPSS rescore
  47. 2026-08-04 04:40 UTCEG score recompute
  48. 2026-08-04 04:40 UTCGHSA enrichment
  49. 2026-08-03 10:35 UTCEPSS rescore
  50. 2026-08-03 06:40 UTCGHSA enrichment
  51. 2026-08-02 08:40 UTCEG score recompute
  52. 2026-08-02 08:40 UTCGHSA enrichment
  53. 2026-08-02 02:26 UTCEPSS rescore
  54. 2026-08-01 10:39 UTCEG score recompute
  55. 2026-08-01 10:39 UTCGHSA enrichment
  56. 2026-08-01 04:15 UTCEPSS rescore
  57. 2026-07-31 12:39 UTCEG score recompute
  58. 2026-07-31 12:38 UTCGHSA enrichment
  59. 2026-07-30 14:38 UTCEG score recompute
  60. 2026-07-30 14:38 UTCGHSA enrichment
  61. 2026-07-29 20:20 UTCEG score recompute
  62. 2026-07-29 19:59 UTCEG score recompute
  63. 2026-07-29 19:23 UTCEG score recompute
  64. 2026-07-29 19:22 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-18266?
CVE-2026-18266 is a medium vulnerability published on July 29, 2026. Dify AI Workflow oauthredirecturl Open Redirect Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Dify. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a…
When was CVE-2026-18266 disclosed?
CVE-2026-18266 was first published in the National Vulnerability Database on July 29, 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-2026-18266 actively exploited?
CVE-2026-18266 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 84.0% of all scored CVEs.
What is the CVSS score of CVE-2026-18266?
CVE-2026-18266 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-18266?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18266, 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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