CVE-2026-88891

HIGHPre-NVD 8.38.3
EchelonGraph scoreMEDIUM confidence

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

Score 8.3 from GitHub Security Advisory (severity: HIGH) published 2026-09-10. A secondary CVSS source baseline 8.3; 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
8.3EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (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: 0.4%CVSS: 8.3Exploit: 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).

OpenPanel through 2.3.0 fails to enforce read-only project access level on 26 of 29 mutating procedures, allowing read-level members to modify, delete, and publish project data. Attackers with explicit read-only access can delete reports and dashboards, schedule entire projects for deletion, publish private analytics to public share links, and modify alerting rules by exploiting missing access level validation in mutation resolvers.

CVSS v3
8.3
EG Score
8.3HIGHmedium confidence
EG Risk
53
EG Risk 53/100

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)
Severity83% × 45%
The EG Score, 8.3 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (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: 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
36th
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 public PoC (CISA Vulnrichment) · Automatable no (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)60 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 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

September 10, 2026

Last Modified

October 2, 2026

Advisory Details (2)

Auto-updated Sep 10, 2026
Fix referenced — no release confirmed yet. Sources: github.
Web page

OpenPanel Read-Only Access Level Enforcement Bypass via Mutations | Advisories | VulnCheck

https://www.vulncheck.com/advisories/openpanel-read-only-access-level-enforcement-bypass-via-mutations
GitHub advisoryMentions a patch (unverified)

OpenPanel: the read-only project access level is enforced on 3 of 29 mutating procedures · Advisory · Openpanel-dev/openpanel · GitHub

https://github.com/Openpanel-dev/openpanel/security/advisories/GHSA-f9rx-pxgw-c6rg

Vendor Advisories for CVE-2026-88891(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 28× in last 7d / 122× 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 100 of 132 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. None are among the latest 100 rows. The 32 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 21:58 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  2. 2026-10-11 19:15 UTCEG score recompute
  3. 2026-10-11 16:32 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  5. 2026-10-11 13:48 UTCEG score recompute
  6. 2026-10-11 10:15 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  7. 2026-10-10 20:11 UTCEG score recompute
  8. 2026-10-10 20:11 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  10. 2026-10-10 08:12 UTCEG score recompute
  11. 2026-10-10 08:12 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  13. 2026-10-09 19:55 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  14. 2026-10-08 23:50 UTCEG score recompute
  15. 2026-10-08 23:49 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  16. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  17. 2026-10-08 00:38 UTCEG score recompute
  18. 2026-10-08 00:38 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  19. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  20. 2026-10-07 12:56 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  21. 2026-10-07 01:04 UTCEG score recompute
  22. 2026-10-07 01:04 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  23. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  24. 2026-10-06 13:22 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  25. 2026-10-06 01:40 UTCEG score recompute
Show 75 more
  1. 2026-10-06 01:40 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  2. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  3. 2026-10-05 13:58 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  4. 2026-10-05 02:16 UTCEG score recompute
  5. 2026-10-05 02:16 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  6. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  7. 2026-10-04 14:25 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  8. 2026-10-04 02:33 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  9. 2026-10-03 14:50 UTCEG score recompute
  10. 2026-10-03 14:50 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  11. 2026-10-03 03:09 UTCEG score recompute
  12. 2026-10-03 03:09 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  13. 2026-10-02 15:26 UTCEG score recompute
  14. 2026-10-02 15:26 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  15. 2026-10-02 14:29 UTCEG score recompute
  16. 2026-10-02 14:29 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  17. 2026-10-02 12:52 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  18. 2026-10-02 01:10 UTCEG score recompute
  19. 2026-10-02 01:10 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  20. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  21. 2026-10-01 13:24 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  22. 2026-10-01 01:42 UTCEG score recompute
  23. 2026-10-01 01:42 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  24. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  25. 2026-09-30 14:01 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  26. 2026-09-30 01:57 UTCEG score recompute
  27. 2026-09-30 01:57 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  28. 2026-09-29 09:42 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  29. 2026-09-28 21:58 UTCEG score recompute
  30. 2026-09-28 21:58 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  31. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  32. 2026-09-28 10:16 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  33. 2026-09-27 22:34 UTCEG score recompute
  34. 2026-09-27 22:34 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  35. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  36. 2026-09-27 10:52 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  37. 2026-09-26 22:47 UTCEG score recompute
  38. 2026-09-26 22:46 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  39. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  40. 2026-09-26 10:49 UTCEG score recompute
  41. 2026-09-26 10:49 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  42. 2026-09-25 22:45 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  43. 2026-09-25 10:59 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  44. 2026-09-24 23:09 UTCEG score recompute
  45. 2026-09-24 23:09 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  46. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  47. 2026-09-24 10:54 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  48. 2026-09-23 23:13 UTCEG score recompute
  49. 2026-09-23 23:12 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  50. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  51. 2026-09-23 11:17 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  52. 2026-09-22 23:35 UTCEG score recompute
  53. 2026-09-22 23:35 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  54. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  55. 2026-09-22 11:32 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  56. 2026-09-21 23:50 UTCEG score recompute
  57. 2026-09-21 23:50 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  58. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  59. 2026-09-21 12:08 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  60. 2026-09-21 00:26 UTCEG score recompute
  61. 2026-09-21 00:26 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  62. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  63. 2026-09-20 12:44 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  64. 2026-09-20 01:02 UTCEG score recompute
  65. 2026-09-20 01:02 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  66. 2026-09-19 13:20 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  67. 2026-09-19 01:38 UTCEG score recompute
  68. 2026-09-19 01:38 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  69. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  70. 2026-09-18 13:57 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  71. 2026-09-18 02:13 UTCEG score recompute
  72. 2026-09-18 02:13 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  73. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  74. 2026-09-17 14:31 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3
  75. 2026-09-17 02:42 UTCGHSA enrichmentGHSA-hpwh-25jq-4wxm · GitHub severity HIGH · GitHub CVSS 8.3

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-88891?
CVE-2026-88891 is a high-severity vulnerability; its CVE record was published on September 10, 2026. OpenPanel through 2.3.0 fails to enforce read-only project access level on 26 of 29 mutating procedures, allowing read-level members to modify, delete, and publish project data. Attackers with explicit read-only access can delete reports and dashboards, schedule entire projects for deletion,…
When was CVE-2026-88891 made public?
CVE-2026-88891 was made public on August 26, 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 September 10, 2026. EchelonGraph's copy of the record carries a last-modified date of October 2, 2026; the record at its source may have been updated since.
Is CVE-2026-88891 actively exploited?
CVE-2026-88891 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (36th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-88891?
CVE-2026-88891 has a CVSS base score of 8.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-88891?
A fix for CVE-2026-88891 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-2026-88891 are linked in the Vendor Advisories panel on this page.

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