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CVE-2026-104734

CVE-2026-104734

validatedZero produced an exploit or a check.

GHSA-9858-wmm9-p4jw ↗EUVD-2026-103214 ↗

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.
themeum Kirki – Freeform Page Builder, Website Builder & Customizer <= 6.3.2
CWE-502 Deserialization of Untrusted Data
ETK-2026-2239Zero's internal tracking ID, independent of the CVE number., permanent identifier
cvss7.2cna vendorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
+3.9dTTV
<1mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = trigger signal
trigger signal (cve.org) +0dcheck available+3.9dagent stopped
0
+1d
+2d
+3d

description

Kirki for WordPress through version 6.3.2 accepts untrusted serialized data through its import functionality. An authenticated user with import access, including Editors under the default access setting, can inject PHP objects; harmful outcomes additionally depend on another installed plugin or theme supplying a usable object chain.

mitigation

Restrict the Kirki import endpoint to trusted administrators and remove Editor access granted by the default full-access setting. Review installed plugins and themes for deserialization object chains, and update or disable Kirki when a corrected release is available.

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, high privileges
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.
2026-10-17 02:31Z
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

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. 2026-10-17 02:31Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-104734
  2. 2026-10-20 23:14Z

this entry in the feed

GET /api/v1/feed/CVE-2026-104734

{
  "etk_id": "ETK-2026-2239",
  "cve_id": "CVE-2026-104734",
  "display_id": "CVE-2026-104734",
  "ghsa_id": "GHSA-9858-wmm9-p4jw",
  "euvd_id": "EUVD-2026-103214",
  "status": "published",
  "anchor_state": "anchored",
  "title": "PHP object injection in Kirki",
  "summary": "Kirki for WordPress through version 6.3.2 accepts untrusted serialized data through its import functionality. An authenticated user with import access, including Editors under the default access setting, can inject PHP objects; harmful outcomes additionally depend on another installed plugin or theme supplying a usable object chain.",
  "mitigation": "Restrict the Kirki import endpoint to trusted administrators and remove Editor access granted by the default full-access setting. Review installed plugins and themes for deserialization object chains, and update or disable Kirki when a corrected release is available.",
  "vendor": "themeum",
  "product": "Kirki – Freeform Page Builder, Website Builder & Customizer",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 6.3.2"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "Kirki – Freeform Page Builder, Website Builder & Customizer",
      "purl": null
    }
  ],
  "cwes": [
    502
  ],
  "cvss_score": 7.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/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": 0.009759583333333334,
  "t0_at": "2026-10-17T02:31:05.687000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-20T23:14:41.830318+00:00",
      "days": 3.8636127698842593,
      "is_lower_bound": false,
      "measured_at": "2026-10-17T02:31:05.687000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-17T02:31:05.687000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-17T02:31:05.687000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-104734"
    }
  }
}

published 2026-10-20 23:14Z
last change 2026-10-21 02:54Z

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