CVE-2026-81817

HIGHPre-NVD 7.27.2
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (26th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — 3 sources updated this week
7.2EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • 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 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).

Affected versions of Flowintel contain an insecure direct object reference / broken object-level authorization issue across numerous task endpoints.

The routes generally received both a case identifier and a task identifier, but previously they did not enforce that the task actually belonged to the supplied case. As a result, an authenticated user with editor-level access to one case could potentially substitute the ID of a task from another case and invoke operations against that foreign task.

The patch introduces task_case_bound_required, which loads both objects and returns 404 unless the task belongs to the requested case. This protection is applied to edit, delete, note, assignment, status, file, export, MISP-linking, subtask, external-reference, and other task-related endpoints.

The fix also adds explicit checks that a requested note_id belongs to the current task before returning or exporting it, closing related cross-object access paths.

Version impacted =>3.3.0

CVSS v3
7.2
EG Score
7.2HIGHmedium confidence
EG Risk
33
EG Risk 33/100

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)
Severity72% × 45%
The EG Score, 7.2 of 10.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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 and apply that within your standard update timelines; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
EPSS PROB
0.4%
EPSS %ILE
26th
KEV
Not listed

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

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 and apply that within your standard update timelines; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” 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

August 27, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Aug 27, 2026
Fix referenced — no release confirmed yet.

Vendor Advisories for CVE-2026-81817(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 / 103× 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 99 of 167 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 68 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 19:20 UTCEG score recompute
  2. 2026-10-11 16:36 UTCEG score recompute
  3. 2026-10-11 13:54 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  6. 2026-10-10 14:05 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  7. 2026-10-10 01:57 UTCEG score recompute
  8. 2026-10-10 01:56 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  10. 2026-10-09 03:08 UTCEG score recompute
  11. 2026-10-09 03:08 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  12. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  13. 2026-10-08 01:21 UTCEG score recompute
  14. 2026-10-08 01:21 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  15. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  16. 2026-10-07 07:47 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  17. 2026-10-06 19:40 UTCEG score recompute
  18. 2026-10-06 19:40 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  19. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  20. 2026-10-06 07:33 UTCEG score recompute
  21. 2026-10-06 07:33 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  22. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  23. 2026-10-05 16:52 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  24. 2026-10-05 03:43 UTCEG score recompute
  25. 2026-10-05 03:43 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
Show 74 more
  1. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  2. 2026-10-04 15:34 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  3. 2026-10-04 03:20 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  4. 2026-10-03 15:14 UTCEG score recompute
  5. 2026-10-03 15:14 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  6. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  7. 2026-10-02 20:57 UTCEG score recompute
  8. 2026-10-02 20:57 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  9. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  10. 2026-10-02 08:17 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  11. 2026-10-01 20:11 UTCEG score recompute
  12. 2026-10-01 20:11 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  13. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  14. 2026-10-01 08:01 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  15. 2026-09-30 19:55 UTCEG score recompute
  16. 2026-09-30 19:55 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  17. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  18. 2026-09-30 05:05 UTCEG score recompute
  19. 2026-09-30 05:05 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  20. 2026-09-29 12:17 UTCEG score recompute
  21. 2026-09-29 12:17 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  22. 2026-09-28 21:17 UTCEG score recompute
  23. 2026-09-28 21:17 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  24. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  25. 2026-09-28 07:06 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  26. 2026-09-27 19:00 UTCEG score recompute
  27. 2026-09-27 19:00 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  28. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  29. 2026-09-27 06:54 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  30. 2026-09-26 18:47 UTCEG score recompute
  31. 2026-09-26 18:47 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  32. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  33. 2026-09-25 08:12 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  34. 2026-09-24 20:06 UTCEG score recompute
  35. 2026-09-24 20:06 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  36. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 25th percentile
  37. 2026-09-24 08:00 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  38. 2026-09-23 19:54 UTCEG score recompute
  39. 2026-09-23 19:54 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  40. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  41. 2026-09-23 06:32 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  42. 2026-09-22 18:26 UTCEG score recompute
  43. 2026-09-22 18:25 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  44. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  45. 2026-09-22 05:26 UTCEG score recompute
  46. 2026-09-22 05:26 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  47. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  48. 2026-09-21 17:20 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  49. 2026-09-21 04:27 UTCEG score recompute
  50. 2026-09-21 04:27 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  51. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  52. 2026-09-20 16:15 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  53. 2026-09-20 04:09 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  54. 2026-09-19 16:03 UTCEG score recompute
  55. 2026-09-19 16:03 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  56. 2026-09-19 03:35 UTCEG score recompute
  57. 2026-09-19 03:35 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  58. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  59. 2026-09-18 15:29 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  60. 2026-09-18 03:23 UTCEG score recompute
  61. 2026-09-18 03:23 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  62. 2026-09-17 15:17 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  63. 2026-09-17 03:11 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  64. 2026-09-16 14:17 UTCEG score recompute
  65. 2026-09-16 14:17 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  66. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  67. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  68. 2026-09-16 02:10 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  69. 2026-09-15 14:04 UTCEG score recompute
  70. 2026-09-15 14:04 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  71. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  72. 2026-09-15 01:58 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  73. 2026-09-14 13:52 UTCGHSA enrichmentGHSA-ccgv-2jpf-98m2 · GitHub severity HIGH
  74. 2026-09-14 01:46 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-81817?
CVE-2026-81817 is a high-severity vulnerability; its CVE record was published on August 27, 2026. Affected versions of Flowintel contain an insecure direct object reference / broken object-level authorization issue across numerous task endpoints. The routes generally received both a case identifier and a task identifier, but previously they did not enforce that the task actually belonged to the…
When was the CVE record for CVE-2026-81817 published?
The CVE record for CVE-2026-81817 was published on August 27, 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 August 28, 2026; the record at its source may have been updated since.
Is CVE-2026-81817 actively exploited?
CVE-2026-81817 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (26th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-81817?
CVE-2026-81817 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-2026-81817?
A fix for CVE-2026-81817 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-2026-81817 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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