CVE-2026-76237

HIGHPre-NVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (27th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 8.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

stigmem-node before 0.9.0a12 contains a broken object level authorization (cross-tenant BOLA) vulnerability in the quarantine review endpoints. On multi-tenant deployments running the opt-in stigmem-plugin-multi-tenant, the list/count queries and _get_quarantined_fact in routes/quarantine.py lacked a tenant_id predicate and the garden lookup was not tenant-scoped, allowing a tenant administrator with only a plain tenant write capability to list, read, and admit or reject quarantined facts belonging to other tenants via the /v1/quarantine endpoints. Default single-tenant deployments are not affected.

CVSS v3
8.6
EG Score
8.6HIGHmedium confidence
EG Risk
39
EG Risk 39/100CISA 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
Severity86% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
27th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines.

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

August 19, 2026

Last Modified

September 24, 2026

Advisory Details (2)

Auto-updated Aug 19, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

stigmem before 0.9.0a12 Cross-Tenant BOLA via quarantine | Advisories | VulnCheck

https://www.vulncheck.com/advisories/stigmem-before-0a12-cross-tenant-bola-via-quarantine
github Patch Available🟡 PoC Available

stistigmem-node: quarantine review surface exposes and mutates other tenants' quarantined facts (cross-tenant BOLA) · Advisory · eidetic-labs/stigmem · GitHub

https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-xhv3-q4xx-349r

Vendor Advisories for CVE-2026-76237(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)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
stigmem-node0.9.0a1 ... 0.9.0a9 (11 versions)
  • every version up to 0.9.0a12: fixed in 0.9.0a12
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 24× in last 7d / 109× 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 186 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-76237?
CVE-2026-76237 is a high vulnerability published on August 19, 2026. stigmem-node before 0.9.0a12 contains a broken object level authorization (cross-tenant BOLA) vulnerability in the quarantine review endpoints. On multi-tenant deployments running the opt-in stigmem-plugin-multi-tenant, the list/count queries and getquarantinedfact in routes/quarantine.py lacked a…
When was CVE-2026-76237 disclosed?
CVE-2026-76237 was first published on August 19, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-76237 actively exploited?
CVE-2026-76237 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-2026-76237?
CVE-2026-76237 has a CVSS base score of 8.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-76237?
A fix for CVE-2026-76237 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-76237 are linked in the Vendor Advisories panel on this page.

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