CVE-2026-111690

CRITICALPre-NVD 9.89.8
EchelonGraph scoreHIGH confidence

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

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-10-16. A secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this weekElevated

Also known asEUVD-2026-102981 (ENISA EUVD) · GHSA-m87p-c3h7-7hr8 (GitHub Security Advisories)Source: ENISA EUVD

9.8EG
EchelonGraph verdictPlan mitigationNo release containing the referenced fix is confirmed: check the referenced fix and the vendor's advisory for a release that contains it; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 9.8Exploit: No code on recordExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

Simple Admin Core through 1.8.7 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge super administrator tokens by using the hard-coded Auth.AccessSecret in api/etc/core.yaml. Attackers can sign a JWT with the public secret and roleId claim 001 to gain full administrative control over users, roles, menus, API authorities, configuration and tokens.

CVSS v3
9.8
EG Score
9.8CRITICALhigh confidence
EG Risk
75
EG Risk 75/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
47th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-30). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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)3 days if the affected system is publicly exposed; 60 days if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (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

October 16, 2026

Last Modified

October 19, 2026

Advisory Details (4)

Auto-updated Oct 27, 2026
Fix referenced — no release confirmed yet. Sources: github_pr.
Web page

Simple Admin Core ships a hard-coded JWT AccessSecret that lets anyone forge a super-admin token and bypass authentication - HackMD

https://hackmd.io/@hieuPenguinnn/simple-admin-core-hardcoded-jwt-accesssecret-admin-auth-bypass
Web page

Simple Admin Core through 1.8.7 Hard-Coded JWT Secret Authentication Bypass | Advisories | VulnCheck

https://www.vulncheck.com/advisories/simple-admin-core-through-1.8.7-hard-coded-jwt-secret-authentication-bypass
GitHub pull request

Security: Replace hardcoded JWT AccessSecret in example configs (CWE-798)

Upstream fix in progress (PR #382 · suyuan32/simple-admin-core, state=open)

https://github.com/suyuan32/simple-admin-core/pull/382
Web page

simple-admin-core/api/etc/core.yaml at v1.8.7 · suyuan32/simple-admin-core · GitHub

https://github.com/suyuan32/simple-admin-core/blob/v1.8.7/api/etc/core.yaml#L6-L8

Vendor Advisories for CVE-2026-111690(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 23× in last 7d / 55× 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.

  1. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  2. 2026-10-31 11:25 UTCEG score recompute
  3. 2026-10-31 11:25 UTCGHSA enrichmentGHSA-m87p-c3h7-7hr8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  5. 2026-10-30 11:47 UTCEG score recompute
  6. 2026-10-30 11:47 UTCGHSA enrichmentGHSA-m87p-c3h7-7hr8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  7. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  8. 2026-10-29 12:10 UTCEG score recompute
  9. 2026-10-29 12:10 UTCGHSA enrichmentGHSA-m87p-c3h7-7hr8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  10. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  11. 2026-10-28 12:26 UTCEG score recompute
  12. 2026-10-28 12:26 UTCGHSA enrichmentGHSA-m87p-c3h7-7hr8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  13. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  14. 2026-10-27 12:49 UTCGHSA enrichmentGHSA-m87p-c3h7-7hr8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  15. 2026-10-27 09:24 UTCEG score recompute
  16. 2026-10-27 09:24 UTCGHSA enrichmentGHSA-m87p-c3h7-7hr8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  17. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  18. 2026-10-26 09:33 UTCEG score recompute
  19. 2026-10-26 09:33 UTCGHSA enrichmentGHSA-m87p-c3h7-7hr8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  20. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  21. 2026-10-25 14:52 UTCEG score recompute
  22. 2026-10-25 09:56 UTCEG score recompute
  23. 2026-10-25 09:56 UTCGHSA enrichmentGHSA-m87p-c3h7-7hr8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  24. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  25. 2026-10-24 10:18 UTCEG score recompute
Show 30 more
  1. 2026-10-24 10:18 UTCGHSA enrichmentGHSA-m87p-c3h7-7hr8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  2. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  3. 2026-10-23 10:40 UTCEG score recompute
  4. 2026-10-23 10:40 UTCGHSA enrichmentGHSA-m87p-c3h7-7hr8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  5. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  6. 2026-10-22 11:00 UTCEG score recompute
  7. 2026-10-22 11:00 UTCGHSA enrichmentGHSA-m87p-c3h7-7hr8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  8. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  9. 2026-10-21 11:21 UTCEG score recompute
  10. 2026-10-21 11:21 UTCGHSA enrichmentGHSA-m87p-c3h7-7hr8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  11. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  12. 2026-10-20 11:44 UTCEG score recompute
  13. 2026-10-20 11:44 UTCGHSA enrichmentGHSA-m87p-c3h7-7hr8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  14. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  15. 2026-10-19 14:27 UTCEG score recompute
  16. 2026-10-19 14:27 UTCGHSA enrichmentGHSA-m87p-c3h7-7hr8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  17. 2026-10-19 13:50 UTCEG score recompute
  18. 2026-10-19 13:50 UTCGHSA enrichmentGHSA-m87p-c3h7-7hr8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  19. 2026-10-18 18:25 UTCEG score recompute
  20. 2026-10-18 18:25 UTCGHSA enrichmentGHSA-m87p-c3h7-7hr8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  21. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  22. 2026-10-18 05:05 UTCEG score recompute
  23. 2026-10-17 18:47 UTCEG score recompute
  24. 2026-10-17 18:46 UTCGHSA enrichmentGHSA-m87p-c3h7-7hr8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  25. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  26. 2026-10-16 19:08 UTCEG score recompute
  27. 2026-10-16 19:08 UTCGHSA enrichmentGHSA-m87p-c3h7-7hr8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  28. 2026-10-16 18:29 UTCEG score recompute
  29. 2026-10-16 17:49 UTCEG score recomputeFirst assessed: 9.8 CRITICAL
  30. 2026-10-16 17:48 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-111690?
CVE-2026-111690 is a critical-severity vulnerability; its CVE record was published on October 16, 2026. Simple Admin Core through 1.8.7 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge super administrator tokens by using the hard-coded Auth.AccessSecret in api/etc/core.yaml. Attackers can sign a JWT with the public secret and roleId claim 001 to gain full…
When was CVE-2026-111690 made public?
CVE-2026-111690 was made public on October 15, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on October 16, 2026. EchelonGraph's copy of the record carries a last-modified date of October 19, 2026; the record at its source may have been updated since.
Is CVE-2026-111690 actively exploited?
CVE-2026-111690 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (47th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-111690?
CVE-2026-111690 has a CVSS base score of 9.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-111690?
A fix for CVE-2026-111690 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation. The vendor advisories EchelonGraph has for CVE-2026-111690 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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