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CVE-2026-85990

CVE-2026-85990

validatedZero produced an exploit or a check.

GHSA-54mm-6729-r5wp ↗EUVD-2026-98850 ↗

check availableZero validated a working check for it.not proven exploitableZero has a detection check, but hasn't produced a full working exploit yet.
cve.orgpublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).+2.2dkevAttacks confirmed in the real world.
Leantime <= 3.9.5
CWE-269 Improper Privilege Management
ETK-2026-1481Zero's internal tracking ID, independent of the CVE number., permanent identifier
pkg:composer/leantime/leantime
cvss8.8cna vendorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
+1h09mTTV
30mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = trigger signal
trigger signal (cve.org) +0dcheck available+0.0dagent stoppedpublic poc+2.2d
0
+1d
+2d

description

Leantime versions before 3.10.0 expose JSON-RPC service methods without required per-method permission checks. An authenticated low-privilege user can create an administrator account and perform plugin-management actions through the affected API methods.

mitigation

Upgrade Leantime to version 3.10.0 or later. Restrict access to Leantime to trusted authenticated users until the upgrade is complete.

check
available
exploit
no
automationDeterministic: a check that runs on its own, the same request on every target. Contextual: an agentic technique that needs to be applied per target, for bugs that depend on contextual flows.
deterministic
auth requiredWhether an attacker needs an account first, based on the CVSS vector's Privileges Required.
yes, low privileges
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
0.33%24th percentile
agent run time
30m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-13 16:15Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
+2.2d
Δ to kevAttacks confirmed in the real world.
–

outcome

Check only, differential: the check fires on the vulnerable build and is silent on the patched one.

source signals

Public signals that triggered or updated the pipeline. These are inputs for the deltas above.

  1. 2026-10-13 16:15Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-85990
  2. 2026-10-15 20:14Z

this entry in the feed

GET /api/v1/feed/CVE-2026-85990

{
  "etk_id": "ETK-2026-1481",
  "cve_id": "CVE-2026-85990",
  "display_id": "CVE-2026-85990",
  "ghsa_id": "GHSA-54mm-6729-r5wp",
  "euvd_id": "EUVD-2026-98850",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Authorization bypass in Leantime JSON-RPC API",
  "summary": "Leantime versions before 3.10.0 expose JSON-RPC service methods without required per-method permission checks. An authenticated low-privilege user can create an administrator account and perform plugin-management actions through the affected API methods.",
  "mitigation": "Upgrade Leantime to version 3.10.0 or later. Restrict access to Leantime to trusted authenticated users until the upgrade is complete.",
  "vendor": "Leantime",
  "product": "leantime",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 3.9.5"
      ],
      "ecosystem": "composer",
      "fixed_versions": [],
      "package_name": "leantime/leantime",
      "purl": "pkg:composer/leantime/leantime"
    }
  ],
  "cwes": [
    269
  ],
  "cvss_score": 8.8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss_score": 0.0033,
  "epss_percentile": 0.245,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 30.491997133333335,
  "t0_at": "2026-10-13T16:15:09.529000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-13T17:23:49.364946+00:00",
      "days": 0.047683286412037035,
      "is_lower_bound": false,
      "measured_at": "2026-10-13T16:15:09.529000+00:00",
      "url": null
    },
    "public_poc": {
      "at": "2026-10-15T20:14:43+00:00",
      "days": 2.1663596180555555,
      "is_lower_bound": false,
      "measured_at": "2026-10-13T16:15:09.529000+00:00",
      "url": "https://github.com/advisories/GHSA-54mm-6729-r5wp"
    },
    "trigger_signal": {
      "at": "2026-10-13T16:15:09.529000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-13T16:15:09.529000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-85990"
    }
  }
}

published 2026-10-13 16:53Z
last change 2026-10-21 08:40Z

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