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CVE-2026-122220

CVE-2026-122220

validatedZero produced an exploit or a check.
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.
WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN) < 45.2
fixed in 45.2
CWE-294 Authentication Bypass by Capture-replay
ETK-2026-3537Zero's internal tracking ID, independent of the CVE number., permanent identifier
cvss9.1cna vendorCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
+56mTTV
31mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = trigger signal
trigger signal (cve.org) +0mcheck available+56magent stopped
0
+15min
+30min
+45min
+60min

description

WPO365 Login versions before 45.2 do not reliably reject previously processed SAML responses. An attacker who obtains a valid signed SAML response may reuse it during its validity period to authenticate as the associated account, including privileged accounts.

mitigation

Upgrade WPO365 Login to version 45.2 or later. Limit exposure of SAML responses and review affected account sessions for unexpected authentication activity.

fixed in 45.2

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
31m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-11-04 20:09Z
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

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. 2026-11-04 20:09Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-122220

this entry in the feed

GET /api/v1/feed/CVE-2026-122220

{
  "etk_id": "ETK-2026-3537",
  "cve_id": "CVE-2026-122220",
  "display_id": "CVE-2026-122220",
  "ghsa_id": null,
  "euvd_id": null,
  "status": "published",
  "anchor_state": "anchored",
  "title": "SAML response replay authentication bypass in WPO365 Login",
  "summary": "WPO365 Login versions before 45.2 do not reliably reject previously processed SAML responses. An attacker who obtains a valid signed SAML response may reuse it during its validity period to authenticate as the associated account, including privileged accounts.",
  "mitigation": "Upgrade WPO365 Login to version 45.2 or later. Limit exposure of SAML responses and review affected account sessions for unexpected authentication activity.",
  "vendor": "wpo365",
  "product": "WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN)",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 45.2"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "45.2"
      ],
      "package_name": "WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN)",
      "purl": null
    }
  ],
  "cwes": [
    294
  ],
  "cvss_score": 9.1,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 30.980317016666667,
  "t0_at": "2026-11-04T20:09:07.711000+00:00",
  "signals": {
    "check": {
      "at": "2026-11-04T21:05:26.133238+00:00",
      "days": 0.03910210923611111,
      "is_lower_bound": false,
      "measured_at": "2026-11-04T20:09:07.711000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-11-04T20:09:07.711000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-04T20:09:07.711000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-122220"
    }
  }
}

published 2026-11-04 20:34Z
last change 2026-11-04 21:05Z

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