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ETK-2026-306

ETK-2026-306Zero's internal tracking ID, independent of the CVE number.

validatedZero produced an exploit or a check.

GHSA-mw8j-7mjm-r3p9 ↗

check availableZero validated a working check for it.not proven exploitableZero has a detection check, but hasn't produced a full working exploit yet.
awaiting cvepublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).−20dkevAttacks confirmed in the real world.
pip:turbohtml >= 1.0.0, <= 1.13.0
fixed in 1.13.1
CWE-400 Uncontrolled Resource Consumption
ETK-2026-306, no cve assigned
pkg:pypi/turbohtml
cvss7.5cna vendorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
−19dTTV
15mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = cve.org, not yet published
trigger signal −20dpublic poc−20dcheck available−19dagent stopped
−15d
−10d
−5d
0

description

turbohtml versions before 1.13.1 can consume excessive CPU while evaluating regular expressions through XPath or XSLT processing. An attacker who can influence an XPath expression, stylesheet, or pattern may cause processing to stall; applications using vulnerable fixed patterns may also be affected when attackers control the searched text.

mitigation

Upgrade turbohtml to version 1.13.1 or later. Until upgraded, do not evaluate untrusted XPath expressions, stylesheets, or regular-expression patterns, and restrict attacker-controlled input processed by risky patterns.

fixed in 1.13.1

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.
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.
–
agent run time
15m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
not published yet
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
−20d
Δ to kevAttacks confirmed in the real world.
–

outcome

Mechanism verified: the exploit fired on the vulnerable build and stayed silent on the patched one, but the server it ran against was ours, so no check ships for it.

source signals

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

  1. 2026-10-01 05:52Z
  2. 2026-10-01 05:52Z

this entry in the feed

GET /api/v1/feed/ETK-2026-306

{
  "etk_id": "ETK-2026-306",
  "cve_id": null,
  "display_id": "ETK-2026-306",
  "ghsa_id": "GHSA-mw8j-7mjm-r3p9",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Regular expression denial of service in turbohtml XPath functions",
  "summary": "turbohtml versions before 1.13.1 can consume excessive CPU while evaluating regular expressions through XPath or XSLT processing. An attacker who can influence an XPath expression, stylesheet, or pattern may cause processing to stall; applications using vulnerable fixed patterns may also be affected when attackers control the searched text.",
  "mitigation": "Upgrade turbohtml to version 1.13.1 or later. Until upgraded, do not evaluate untrusted XPath expressions, stylesheets, or regular-expression patterns, and restrict attacker-controlled input processed by risky patterns.",
  "vendor": "pip",
  "product": "pip:turbohtml",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 1.0.0, <= 1.13.0"
      ],
      "ecosystem": "pip",
      "fixed_versions": [
        "1.13.1"
      ],
      "package_name": "turbohtml",
      "purl": "pkg:pypi/turbohtml"
    }
  ],
  "cwes": [
    400
  ],
  "cvss_score": 7.5,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "mechanism_verified",
  "exploit": false,
  "pipeline_minutes": 15.254640083333333,
  "t0_at": null,
  "signals": {
    "check": {
      "at": "2026-10-02T06:11:31.638537+00:00",
      "days": -18.983233399664353,
      "is_lower_bound": true,
      "measured_at": "2026-10-21T05:47:23.025840+00:00",
      "url": null
    },
    "public_poc": {
      "at": "2026-10-01T05:52:15+00:00",
      "days": -19.99662041976852,
      "is_lower_bound": true,
      "measured_at": "2026-10-21T05:47:23.025840+00:00",
      "url": "https://github.com/tox-dev/turbohtml/security/advisories/GHSA-mw8j-7mjm-r3p9"
    },
    "trigger_signal": {
      "at": "2026-10-01T05:52:15+00:00",
      "days": -19.99662041976852,
      "is_lower_bound": true,
      "measured_at": "2026-10-21T05:47:23.025840+00:00",
      "url": "https://github.com/tox-dev/turbohtml/security/advisories/GHSA-mw8j-7mjm-r3p9"
    }
  }
}

published 2026-10-02 05:56Z
last change 2026-10-21 05:31Z

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