CVE-2026-103043

validatedZero produced an exploit or a check.

GHSA-phc2-88rx-x2mp ↗EUVD-2026-89484 ↗

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.
alexcorvi anchorme <= 3.0.8
CWE-1333 Inefficient Regular Expression Complexity
ETK-2026-37, permanent identifier
+17dTTV
7mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = trigger signal
trigger signal (cve.org) +0dcheck available+17dagent stopped
0
+5d
+10d
+15d

description

anchorme through 3.0.8 is affected by a regular-expression denial-of-service issue in IPv6 host extraction. An attacker who can submit text for anchorme to process may cause excessive regular-expression work that blocks the Node.js event loop and disrupts other requests.

mitigation

Avoid processing untrusted input with affected anchorme versions, or impose input length and processing-time limits before invoking it. Monitor the project for a fixed release and upgrade when one 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.
contextual
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.
0.49%40th percentile
agent run time
7m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-09-29 22:51Z
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

Contextual check: a technique exists and was validated, but no deterministic check could cover this one.

source signals

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

  1. 2026-09-29 22:51Z
    cve_org: trigger signal, started the run

this entry in the feed

GET /api/v1/feed/CVE-2026-103043

{
  "etk_id": "ETK-2026-37",
  "cve_id": "CVE-2026-103043",
  "display_id": "CVE-2026-103043",
  "ghsa_id": "GHSA-phc2-88rx-x2mp",
  "euvd_id": "EUVD-2026-89484",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Regular expression denial of service in anchorme",
  "summary": "anchorme through 3.0.8 is affected by a regular-expression denial-of-service issue in IPv6 host extraction. An attacker who can submit text for anchorme to process may cause excessive regular-expression work that blocks the Node.js event loop and disrupts other requests.",
  "mitigation": "Avoid processing untrusted input with affected anchorme versions, or impose input length and processing-time limits before invoking it. Monitor the project for a fixed release and upgrade when one is published.",
  "vendor": "alexcorvi",
  "product": "anchorme",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 3.0.8"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "anchorme",
      "purl": null
    }
  ],
  "cwes": [
    1333
  ],
  "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": 0.0049,
  "epss_percentile": 0.4048,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 7.18085895,
  "t0_at": "2026-09-29T22:51:02.576000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-17T08:20:40.160562+00:00",
      "days": 17.395573895393518,
      "is_lower_bound": false,
      "measured_at": "2026-09-29T22:51:02.576000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-09-29T22:51:02.576000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-29T22:51:02.576000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-103043"
    }
  }
}

published 2026-09-29 23:29Z
last change 2026-10-21 02:54Z

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