CVE-2026-127056

waiting for further signals

EUVD-2026-124377 ↗

no check availablenot proven exploitable

cve.orgpublic pockev

mholt PapaParse < 5.7.1

fixed in 5.7.1

CWE-407 Inefficient Algorithmic Complexity

ETK-2026-4275, permanent identifier

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

14h 30msince last run

17mAI analysis

timeline

0 = trigger signal

trigger signal (cve.org) +0hwaiting for further signals+0h41m

+2h

+4h

+6h

+8h

+10h

+12h

description

PapaParse releases before 5.7.1 can consume disproportionate CPU while processing crafted CSV content. An unauthenticated attacker may cause denial of service, including blocking a Node.js event loop or freezing a browser tab, when they can supply data to Papa.parse().

mitigation

Upgrade PapaParse to version 5.7.1 or later. Until upgraded, restrict untrusted input to parsing endpoints and enforce input size and processing limits.

fixed in 5.7.1

check

exploit

automation

–

auth required

EPSS

–

agent run time

17m

cve.org record, t = 0

2026-11-12 12:39Z

Δ to public poc

–

Δ to kev

–

outcome

No artifact: an exploit or check was attempted but could not be produced at this moment.

source signals

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

2026-11-12 12:39Z
cve_org: trigger signal, started the run
https://www.cve.org/CVERecord?id=CVE-2026-127056

this entry in the feed

GET /api/v1/feed/CVE-2026-127056

{
  "etk_id": "ETK-2026-4275",
  "cve_id": "CVE-2026-127056",
  "display_id": "CVE-2026-127056",
  "ghsa_id": null,
  "euvd_id": "EUVD-2026-124377",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Algorithmic complexity denial of service in PapaParse",
  "summary": "PapaParse releases before 5.7.1 can consume disproportionate CPU while processing crafted CSV content. An unauthenticated attacker may cause denial of service, including blocking a Node.js event loop or freezing a browser tab, when they can supply data to Papa.parse().",
  "mitigation": "Upgrade PapaParse to version 5.7.1 or later. Until upgraded, restrict untrusted input to parsing endpoints and enforce input size and processing limits.",
  "vendor": "mholt",
  "product": "PapaParse",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 5.7.1"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "5.7.1"
      ],
      "package_name": "PapaParse",
      "purl": null
    }
  ],
  "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": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 16.630191566666667,
  "t0_at": "2026-11-12T12:39:13.552000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-12T12:39:13.552000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-12T12:39:13.552000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-127056"
    }
  }
}

published 2026-11-12 13:03Z
last change 2026-11-13 02:09Z

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