Vulnerability-Lookup

CVE-2026-84701 (GCVE-0-2026-84701)

Vulnerability from cvelistv5 – Published: 2026-09-02 00:37 – Updated: 2026-09-02 15:43

Title

NocoBase Rich Text Field Stored Cross-Site Scripting via API

Summary

NocoBase fails to sanitize rich text field values in the read renderer, allowing users with create permissions to store malicious HTML with event handlers. Attackers can write arbitrary markup through the collection API that executes in the browsers of all users viewing the affected record.

Severity

5.1 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-02 15:42 UTC

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

VulnCheck mitre root

References

4 references

URL	Tags
https://github.com/nocobase/nocobase	product
https://github.com/nocobase/nocobase/issues/10416	issue-tracking
https://github.com/nocobase/nocobase/blob/v2.2.5/…	technical-description
https://www.vulncheck.com/advisories/nocobase-ric…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
nocobase	nocobase	Affected: 0 , ≤ 2.2.5 (semver) cpe:2.3:a:nocobase:nocobase::::::::

Date Public

2026-08-26 00:00

Credits

George Chen

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-84701

Vulnerability from fkie_nvd - Published: 2026-09-02 01:17 - Updated: 2026-09-02 16:17

Severity

5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://github.com/nocobase/nocobase
	disclosure@vulncheck.com	https://github.com/nocobase/nocobase/blob/v2.2.5/packages/core/client/src/schema-component/antd/input/ReadPretty.tsx
	disclosure@vulncheck.com	https://github.com/nocobase/nocobase/issues/10416
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/nocobase-rich-text-field-stored-cross-site-scripting-via-api

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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  "lastModified": "2026-09-02T16:17:32.693",
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          "modifiedSubIntegrityImpact": "NOT_DEFINED",
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          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
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      "url": "https://github.com/nocobase/nocobase"
    },
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}

GHSA-9MV7-8VHM-9HC5

Vulnerability from github – Published: 2026-09-02 03:31 – Updated: 2026-09-02 03:31

Details

Severity

5.4 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

5.1 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-84701"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-02T01:17:25Z",
    "severity": "MODERATE"
  },
  "details": "NocoBase fails to sanitize rich text field values in the read renderer, allowing users with create permissions to store malicious HTML with event handlers. Attackers can write arbitrary markup through the collection API that executes in the browsers of all users viewing the affected record.",
  "id": "GHSA-9mv7-8vhm-9hc5",
  "modified": "2026-09-02T03:31:12Z",
  "published": "2026-09-02T03:31:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84701"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nocobase/nocobase/issues/10416"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nocobase/nocobase"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nocobase/nocobase/blob/v2.2.5/packages/core/client/src/schema-component/antd/input/ReadPretty.tsx"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/nocobase-rich-text-field-stored-cross-site-scripting-via-api"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/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:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-84701 (GCVE-0-2026-84701)

FKIE_CVE-2026-84701

GHSA-9MV7-8VHM-9HC5

Tags

Sightings

Nomenclature