CVE-2026-76238

HIGHPre-NVD 7.27.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.2 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
7.2EG
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: 7.2Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

stigmem versions before 0.9.0a12 contain a broken object level authorization vulnerability in the decay sweep endpoint that allows authenticated attackers with write credentials for one tenant to execute decay operations affecting all tenants. Attackers can submit POST requests to the decay sweep endpoint with ttl_seconds=0 to expire facts across all tenants, or use dry_run to obtain cross-tenant fact counts and existence information.

CVSS v3
7.2
EG Score
7.2HIGHmedium confidence
EG Risk
33
EG Risk 33/100CISA 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
Severity72% × 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
Patch available. Sources: github.
generic

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

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

stigmem-node: decay sweep expires and counts facts across all tenants (cross-tenant BOLA) · Advisory · eidetic-labs/stigmem · GitHub

https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-6gqw-jqv7-v88m

Vendor Advisories for CVE-2026-76238(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 23× in last 7d / 102× 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 175 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-76238?
CVE-2026-76238 is a high vulnerability published on August 19, 2026. stigmem versions before 0.9.0a12 contain a broken object level authorization vulnerability in the decay sweep endpoint that allows authenticated attackers with write credentials for one tenant to execute decay operations affecting all tenants. Attackers can submit POST requests to the decay sweep…
When was CVE-2026-76238 disclosed?
CVE-2026-76238 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-2026-76238 actively exploited?
CVE-2026-76238 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-2026-76238?
CVE-2026-76238 has a CVSS base score of 7.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-76238?
A fix for CVE-2026-76238 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-76238 are linked in the Vendor Advisories panel on this page.

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