CVE-2026-109936

validatedZero produced an exploit or a check.

GHSA-7hjg-79p8-hrjm ↗EUVD-2026-108589 ↗

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).kevAttacks confirmed in the real world.+10d
themeisle Otter Blocks < 3.2.8
fixed in 3.2.8
ETK-2026-3293Zero's internal tracking ID, independent of the CVE number., permanent identifier
+10dTTV
<1mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = cve.org publication
cve.org publicationtrigger signal +9.7dkev+10dcheck available+10dagent stopped
0
+2d
+4d
+6d
+8d

description

Otter Blocks versions earlier than 3.2.8 are affected when processing dynamic-content tokens in block markup. An unauthenticated attacker may cause script to execute in the browser of a visitor who views an affected page, including an administrator.

mitigation

Update Otter Blocks to version 3.2.8 or later. Disable the plugin until it can be updated if upgrading cannot be performed promptly.

fixed in 3.2.8

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.
no
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
–
agent run time
<1m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-23 06:00Z
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.
+10d

outcome

Upstream: a detection for this already ships elsewhere, so we didn't generate a new one. The credit goes to whoever did.

source signals

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

  1. 2026-10-23 06:00Z
  2. 2026-11-02
    vulncheck_kev: trigger signal, started the run
  3. 2026-11-02 00:00Z
  4. 2026-11-02 16:03Z

this entry in the feed

GET /api/v1/feed/CVE-2026-109936

{
  "etk_id": "ETK-2026-3293",
  "cve_id": "CVE-2026-109936",
  "display_id": "CVE-2026-109936",
  "ghsa_id": "GHSA-7hjg-79p8-hrjm",
  "euvd_id": "EUVD-2026-108589",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Stored cross-site scripting in Otter Blocks",
  "summary": "Otter Blocks versions earlier than 3.2.8 are affected when processing dynamic-content tokens in block markup. An unauthenticated attacker may cause script to execute in the browser of a visitor who views an affected page, including an administrator.",
  "mitigation": "Update Otter Blocks to version 3.2.8 or later. Disable the plugin until it can be updated if upgrading cannot be performed promptly.",
  "vendor": "themeisle",
  "product": "Otter Blocks",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 3.2.8"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "3.2.8"
      ],
      "package_name": "Otter Blocks",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 7.5,
  "cvss_src": "other",
  "cvss_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "upstream",
  "exploit": false,
  "pipeline_minutes": 0.012944733333333333,
  "t0_at": "2026-10-23T06:00:18.103000+00:00",
  "signals": {
    "check": {
      "at": "2026-11-02T16:03:07.327619+00:00",
      "days": 10.418625284942129,
      "is_lower_bound": false,
      "measured_at": "2026-10-23T06:00:18.103000+00:00",
      "url": null
    },
    "kev": {
      "at": "2026-11-02T00:00:00+00:00",
      "days": 10,
      "is_lower_bound": false,
      "measured_at": "2026-10-23T06:00:18.103000+00:00",
      "precision": "day",
      "url": "https://vulncheck.com/cve/CVE-2026-109936"
    },
    "trigger_signal": {
      "at": "2026-11-02T00:00:00+00:00",
      "days": 9.749790474537036,
      "is_lower_bound": false,
      "measured_at": "2026-10-23T06:00:18.103000+00:00",
      "url": "https://vulncheck.com/cve/CVE-2026-109936"
    }
  }
}

published 2026-11-02 16:03Z
last change 2026-11-02 20:38Z

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