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CVE-2026-116872

CVE-2026-116872

validatedZero produced an exploit or a check.

GHSA-22p9-pjfx-9wj2 ↗EUVD-2026-110700 ↗

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.
SemanticMediaWiki >= 3.0.0, < 7.3.1
fixed in 7.3.1
CWE-407 Inefficient Algorithmic Complexity
ETK-2026-2750Zero's internal tracking ID, independent of the CVE number., permanent identifier
pkg:composer/mediawiki/semantic-media-wiki
cvss8.7cna vendorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
+1h00mTTV
29mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = trigger signal
trigger signal (cve.org) +0mcheck available+60magent stopped
0
+15min
+30min
+45min

description

Semantic MediaWiki versions 3.0.0 through 7.3.0 are affected by inefficient processing of search terms. An unauthenticated attacker may consume excessive CPU and occupy PHP search workers through search requests when the extended search engine is enabled.

mitigation

Upgrade SemanticMediaWiki to version 7.3.1 or later. Until upgrading, disable extended search where feasible and restrict or rate-limit access to Special:Search.

fixed in 7.3.1

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
29m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-27 10:23Z
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. 2026-10-27 10:23Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-116872

this entry in the feed

GET /api/v1/feed/CVE-2026-116872

{
  "etk_id": "ETK-2026-2750",
  "cve_id": "CVE-2026-116872",
  "display_id": "CVE-2026-116872",
  "ghsa_id": "GHSA-22p9-pjfx-9wj2",
  "euvd_id": "EUVD-2026-110700",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Algorithmic complexity flaw in Semantic MediaWiki search parsing",
  "summary": "Semantic MediaWiki versions 3.0.0 through 7.3.0 are affected by inefficient processing of search terms. An unauthenticated attacker may consume excessive CPU and occupy PHP search workers through search requests when the extended search engine is enabled.",
  "mitigation": "Upgrade SemanticMediaWiki to version 7.3.1 or later. Until upgrading, disable extended search where feasible and restrict or rate-limit access to Special:Search.",
  "vendor": "SemanticMediaWiki",
  "product": "SemanticMediaWiki",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 3.0.0, < 7.3.1"
      ],
      "ecosystem": "composer",
      "fixed_versions": [
        "7.3.1"
      ],
      "package_name": "mediawiki/semantic-media-wiki",
      "purl": "pkg:composer/mediawiki/semantic-media-wiki"
    }
  ],
  "cwes": [
    407
  ],
  "cvss_score": 8.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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": 28.60922315,
  "t0_at": "2026-10-27T10:23:26.944000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-27T11:23:35.540656+00:00",
      "days": 0.041766165,
      "is_lower_bound": false,
      "measured_at": "2026-10-27T10:23:26.944000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-27T10:23:26.944000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-27T10:23:26.944000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-116872"
    }
  }
}

published 2026-10-27 10:54Z
last change 2026-10-27 13:52Z

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