CVE-2026-9091

MEDIUMNVD 5.35.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 5.3 from GitHub Security Advisory published 2026-05-28. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
5.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.3Exploit: None knownExposed services: Not assessed

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

The CVE record's CNA (CERT/CC) lists Casdoor versions up to and including 2.362.0 as affected. No release containing a fix is confirmed on record.

Casdoor versions 2.362.0 and earlier contain a logic flaw in the social‑login binding flow that allows users to bypass configured MFA requirements. The binding‑rule code path in controllers/auth.go calls HandleLoggedIn directly without invoking checkMfaEnable. Any user authenticating via this path is logged in without MFA enforcement.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
39
EG Risk 39/100

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 (value × EchelonGraph’s weight)
Severity53% × 45%
The EG Score, 5.3 of 10.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
27th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 28, 2026

Last Modified

May 29, 2026

Advisory Details (1)

Auto-updated Jun 13, 2026
No fix on record yet. Sources: cert.
CERT

VU#780781 - Casdoor contains multiple authentication bypass and access management vulnerabilities

https://kb.cert.org/vuls/id/780781

Vendor Advisories for CVE-2026-9091(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
gogithub.com/casdoor/casdoor—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFix by version rangeDependents
github.com/casdoor/casdoor—
  • every version through 1.1000.1-0.20260321120606-239e8bd69487: no fix on record
  • every version on: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 31× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 98 of 223 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 2 repeat rows among the latest 100 are merged into the row they repeat. The 125 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-16 16:45 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  2. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  3. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  4. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  5. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  6. 2026-10-12 14:46 UTCEG score recompute
  7. 2026-10-11 19:14 UTCEG score recompute
  8. 2026-10-11 16:30 UTCEG score recompute
  9. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  10. 2026-10-11 13:45 UTCEG score recompute
  11. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  12. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  13. 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  15. 2026-10-06 15:19 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  16. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  17. 2026-10-04 23:23 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  18. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  19. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  20. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  21. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  22. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  23. 2026-09-27 13:49 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  24. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  25. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 26th percentile
Show 73 more
  1. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  2. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  3. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  4. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  5. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  6. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  7. 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  8. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  9. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  10. 2026-09-14 06:42 UTCEG score recompute
  11. 2026-09-14 06:42 UTCGHSA enrichmentGHSA-gv4m-v8c8-hr3g · GitHub CVSS 5.3
  12. 2026-09-13 16:48 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  13. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  14. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  15. 2026-09-11 09:38 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  16. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  17. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  18. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  19. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  20. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  21. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  22. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  23. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  24. 2026-08-30 19:18 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  25. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  26. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  27. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  28. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  29. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  30. 2026-08-25 04:41 UTCEG score recompute
  31. 2026-08-25 04:41 UTCGHSA enrichmentGHSA-gv4m-v8c8-hr3g · GitHub CVSS 5.3
  32. 2026-08-24 14:18 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  33. 2026-08-23 14:29 UTCEG score recompute
  34. 2026-08-23 14:29 UTCGHSA enrichmentGHSA-gv4m-v8c8-hr3g · GitHub CVSS 5.3
  35. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  36. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  37. 2026-08-21 15:26 UTCEG score recompute
  38. 2026-08-21 15:26 UTCGHSA enrichmentGHSA-gv4m-v8c8-hr3g · GitHub CVSS 5.3
  39. 2026-08-20 22:56 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  40. 2026-08-20 10:46 UTCEG score recompute
  41. 2026-08-20 10:46 UTCGHSA enrichmentGHSA-gv4m-v8c8-hr3g · GitHub CVSS 5.3
  42. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  43. 2026-08-18 13:49 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  44. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  45. 2026-08-17 08:02 UTCEG score recompute
  46. 2026-08-17 08:02 UTCGHSA enrichmentGHSA-gv4m-v8c8-hr3g · GitHub CVSS 5.3
  47. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  48. 2026-08-16 02:34 UTCEG score recompute
  49. 2026-08-16 02:34 UTCGHSA enrichmentGHSA-gv4m-v8c8-hr3g · GitHub CVSS 5.3
  50. 2026-08-16 02:15 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  51. 2026-08-15 03:48 UTCEG score recompute
  52. 2026-08-15 03:48 UTCGHSA enrichmentGHSA-gv4m-v8c8-hr3g · GitHub CVSS 5.3
  53. 2026-08-15 01:31 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  54. 2026-08-14 05:55 UTCEG score recompute
  55. 2026-08-14 05:55 UTCGHSA enrichmentGHSA-gv4m-v8c8-hr3g · GitHub CVSS 5.3
  56. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  57. 2026-08-13 08:02 UTCEG score recompute
  58. 2026-08-13 08:02 UTCGHSA enrichmentGHSA-gv4m-v8c8-hr3g · GitHub CVSS 5.3
  59. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  60. 2026-08-12 09:59 UTCEG score recompute
  61. 2026-08-12 09:59 UTCGHSA enrichmentGHSA-gv4m-v8c8-hr3g · GitHub CVSS 5.3
  62. 2026-08-11 13:43 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  63. 2026-08-11 12:06 UTCEG score recompute
  64. 2026-08-11 12:06 UTCGHSA enrichmentGHSA-gv4m-v8c8-hr3g · GitHub CVSS 5.3
  65. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  66. 2026-08-10 14:09 UTCGHSA enrichmentGHSA-gv4m-v8c8-hr3g · GitHub CVSS 5.3
  67. 2026-08-09 16:16 UTCEG score recompute
  68. 2026-08-09 16:16 UTCGHSA enrichmentGHSA-gv4m-v8c8-hr3g · GitHub CVSS 5.3
  69. 2026-08-09 13:47 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  70. 2026-08-08 18:23 UTCEG score recompute
  71. 2026-08-08 18:23 UTCGHSA enrichmentGHSA-gv4m-v8c8-hr3g · GitHub CVSS 5.3
  72. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  73. 2026-08-07 17:20 UTCEG score recompute

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-9091?
CVE-2026-9091 is a medium-severity vulnerability; its CVE record was published on May 28, 2026. Casdoor versions 2.362.0 and earlier contain a logic flaw in the social‑login binding flow that allows users to bypass configured MFA requirements. The binding‑rule code path in controllers/auth.go calls HandleLoggedIn directly without invoking checkMfaEnable. Any user authenticating via this path…
When was the CVE record for CVE-2026-9091 published?
The CVE record for CVE-2026-9091 was published on May 28, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of May 29, 2026; the record at its source may have been updated since.
Is CVE-2026-9091 actively exploited?
CVE-2026-9091 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (27th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-9091?
CVE-2026-9091 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-9091?
No fix for CVE-2026-9091 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (CERT/CC) lists Casdoor versions up to and including 2.362.0 as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-9091 are linked in the Vendor Advisories panel on this page.

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