CVE-2026-100268

waiting for further signalsZero needs more public information before it can validate it.

GHSA-9w5q-jgx6-pw78 ↗EUVD-2026-90012 ↗

no check availablenot proven exploitable
cve.orgpublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).kevAttacks confirmed in the real world.
JetBrains YouTrack < 2026.2.19197
fixed in 2026.2.19197
CWE-639 Authorization Bypass Through User-Controlled Key
ETK-2026-142, permanent identifier
19h 10msince last run
34mAI analysisAnalysis: how long the AI spent reversing this signal.
timeline
0 = trigger signal
trigger signal (cve.org) +0hwaiting for further signals+475h38m
0
+2h
+4h
+6h
+8h
+10h

description

JetBrains YouTrack versions before 2026.2.19197 are affected by an authorization flaw involving notification templates. A project administrator may be able to read comments from other projects. Exploitation requires project-administrator access.

mitigation

Upgrade YouTrack to version 2026.2.19197 or later.

fixed in 2026.2.19197

check
no
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.
contextual
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.
0.23%12th percentile
agent run time
34m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-09-30 15:17Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
–
Δ to kevAttacks confirmed in the real world.
–

outcome

Contextual: an exploit technique exists, but no deterministic check could cover this one.

source signals

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

  1. 2026-09-30 15:17Z
    cve_org: trigger signal, started the run

this entry in the feed

GET /api/v1/feed/CVE-2026-100268

{
  "etk_id": "ETK-2026-142",
  "cve_id": "CVE-2026-100268",
  "display_id": "CVE-2026-100268",
  "ghsa_id": "GHSA-9w5q-jgx6-pw78",
  "euvd_id": "EUVD-2026-90012",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Cross-project comment authorization flaw in YouTrack",
  "summary": "JetBrains YouTrack versions before 2026.2.19197 are affected by an authorization flaw involving notification templates. A project administrator may be able to read comments from other projects. Exploitation requires project-administrator access.",
  "mitigation": "Upgrade YouTrack to version 2026.2.19197 or later.",
  "vendor": "JetBrains",
  "product": "YouTrack",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 2026.2.19197"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "2026.2.19197"
      ],
      "package_name": "YouTrack",
      "purl": null
    }
  ],
  "cwes": [
    639
  ],
  "cvss_score": 7.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
  "epss_score": 0.0023,
  "epss_percentile": 0.1285,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 33.73156215,
  "t0_at": "2026-09-30T15:17:51.585000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-09-30T15:17:51.585000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-30T15:17:51.585000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-100268"
    }
  }
}

published 2026-09-30 19:32Z
last change 2026-10-21 02:25Z

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