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CVE-2026-1928

CVE-2026-1928

validatedZero produced an exploit or a check.

GHSA-f7v4-wpwr-74r2 ↗EUVD-2026-111576 ↗

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.
rankmath Rank Math SEO – AI SEO Tools to Dominate SEO Rankings <= 1.0.276
CWE-502 Deserialization of Untrusted Data
ETK-2026-2828Zero's internal tracking ID, independent of the CVE number., permanent identifier
cvss8.8cna vendorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
+21mTTV
<1mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = trigger signal
trigger signal (cve.org) +0mcheck available+21magent stopped
0
+5min
+10min
+15min
+20min

description

Rank Math SEO for WordPress through version 1.0.276 is affected by PHP object injection in a REST API endpoint that deserializes untrusted input. An authenticated attacker with Contributor-level or higher access may inject PHP objects and, where a suitable POP chain is present, execute code on the site.

mitigation

Restrict Contributor and higher WordPress accounts to trusted users, review existing accounts, and remove unnecessary access. Limit access to the affected REST API endpoint where operationally feasible, and apply a vendor update when a fixed release is published.

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.
–
agent run time
<1m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-28 03:42Z
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. 2026-10-28 03:42Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-1928
  2. 2026-10-28 04:04Z

this entry in the feed

GET /api/v1/feed/CVE-2026-1928

{
  "etk_id": "ETK-2026-2828",
  "cve_id": "CVE-2026-1928",
  "display_id": "CVE-2026-1928",
  "ghsa_id": "GHSA-f7v4-wpwr-74r2",
  "euvd_id": "EUVD-2026-111576",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Authenticated PHP object injection in Rank Math SEO",
  "summary": "Rank Math SEO for WordPress through version 1.0.276 is affected by PHP object injection in a REST API endpoint that deserializes untrusted input. An authenticated attacker with Contributor-level or higher access may inject PHP objects and, where a suitable POP chain is present, execute code on the site.",
  "mitigation": "Restrict Contributor and higher WordPress accounts to trusted users, review existing accounts, and remove unnecessary access. Limit access to the affected REST API endpoint where operationally feasible, and apply a vendor update when a fixed release is published.",
  "vendor": "rankmath",
  "product": "Rank Math SEO – AI SEO Tools to Dominate SEO Rankings",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 1.0.276"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "Rank Math SEO – AI SEO Tools to Dominate SEO Rankings",
      "purl": null
    }
  ],
  "cwes": [
    502
  ],
  "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": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "upstream",
  "exploit": false,
  "pipeline_minutes": 0.3982706,
  "t0_at": "2026-10-28T03:42:54.378000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-28T04:04:20.971487+00:00",
      "days": 0.01489112832175926,
      "is_lower_bound": false,
      "measured_at": "2026-10-28T03:42:54.378000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-28T03:42:54.378000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-28T03:42:54.378000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-1928"
    }
  }
}

published 2026-10-28 04:03Z
last change 2026-10-28 06:14Z

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