CVE-2026-90800

validated

GHSA-49pc-3x56-3wp6 ↗EUVD-2026-105100 ↗

check availablenot proven exploitable

cve.orgpublic pockev

Apache Software Foundation Apache CouchDB < 3.5.3

fixed in 3.5.3

ETK-2026-2209, permanent identifier

cvss8.1cna vendorCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:C/RE:M/U:Amber

+4h09mTTV

14mAI analysis

Check if you are vulnerable

timeline

0 = trigger signal

trigger signal (cve.org) +0hcheck available+4h09magent stopped

+1h

+2h

+3h

description

Apache CouchDB 3.5.2 and earlier may fail to enforce authorization for an API path handled by chttpd. An attacker can read the contents of a prefixed _user or _replicator database without the intended permissions when the deployment uses one of those prefixed system databases.

mitigation

Upgrade Apache CouchDB to version 3.5.3.

fixed in 3.5.3

check

available

exploit

automation

deterministic

auth required

EPSS

–

agent run time

14m

cve.org record, t = 0

2026-10-20 15:40Z

Δ to public poc

–

Δ to kev

–

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.

2026-10-20 15:40Z
ghsa: trigger signal, started the run
https://github.com/advisories/GHSA-49pc-3x56-3wp6
2026-10-20 15:40Z
cve.org record for CVE-2026-90800
cve_org · https://www.cve.org/CVERecord?id=CVE-2026-90800

this entry in the feed

GET /api/v1/feed/CVE-2026-90800

{
  "etk_id": "ETK-2026-2209",
  "cve_id": "CVE-2026-90800",
  "display_id": "CVE-2026-90800",
  "ghsa_id": "GHSA-49pc-3x56-3wp6",
  "euvd_id": "EUVD-2026-105100",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Missing authorization in Apache CouchDB chttpd",
  "summary": "Apache CouchDB 3.5.2 and earlier may fail to enforce authorization for an API path handled by chttpd. An attacker can read the contents of a prefixed _user or _replicator database without the intended permissions when the deployment uses one of those prefixed system databases.",
  "mitigation": "Upgrade Apache CouchDB to version 3.5.3.",
  "vendor": "Apache Software Foundation",
  "product": "Apache CouchDB",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 3.5.3"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "3.5.3"
      ],
      "package_name": "Apache CouchDB",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 8.1,
  "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:H/SI:H/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:C/RE:M/U:Amber",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 14.279381783333333,
  "t0_at": "2026-10-20T15:40:47.497000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-20T19:50:00.725989+00:00",
      "days": 0.17306977996527778,
      "is_lower_bound": false,
      "measured_at": "2026-10-20T15:40:47.497000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-20T15:40:47.497000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-20T15:40:47.497000+00:00",
      "url": "https://github.com/advisories/GHSA-49pc-3x56-3wp6"
    }
  }
}

published 2026-10-20 19:35Z
last change 2026-10-21 03:11Z

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