CVE-2026-33976

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Source
https://cve.org/CVERecord?id=CVE-2026-33976
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33976.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-33976
Aliases
  • GHSA-f42f-phvp-43x5
Published
2026-03-27T21:26:10.127Z
Modified
2026-04-02T13:29:15.882800Z
Severity
  • 9.6 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H CVSS Calculator
Summary
Notesnook vulnerable to RCE via stored XSS in Web Clipper rendering
Details

Notesnook is a note-taking app. Prior to version 3.3.11 on Web/Desktop and 3.3.17 on Android/iOS, a stored XSS in the Web Clipper rendering flow can be escalated to remote code execution in the desktop app. The root cause is that the clipper preserves attacker-controlled attributes from the source page’s root element and stores them inside web-clip HTML. When the clip is later opened, Notesnook renders that HTML into a same-origin, unsandboxed iframe using contentDocument.write(...). Event-handler attributes such as onload, onclick, or onmouseover execute in the Notesnook origin. In the desktop app, this becomes RCE because Electron is configured with nodeIntegration: true and contextIsolation: false. Version 3.3.11 Web/Desktop and 3.3.17 on Android/iOS patch the issue.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33976.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-79",
        "CWE-94"
    ]
}
References

Affected packages

Git / github.com/streetwriters/notesnook

Affected ranges

Type
GIT
Repo
https://github.com/streetwriters/notesnook
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
00a20dda48e63d04fec7724b8707c3a6b913f673
Fixed
0af831d50b4de3a9766cf8d5ab33238ade61bf27
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.3.11"
        },
        {
            "fixed": "3.3.17"
        }
    ]
}

Affected versions

2.*
2.2.0-android
2.2.1-android
2.2.2-android
2.2.3-android
2.2.4-android
2.2.5-android
2.2.6-android
2.3.0-android
2.4.0-android
2.4.1-android
2.4.10-android
2.4.11-android
2.4.12-android
2.4.13-android
2.4.14-android
2.4.15-android
2.4.16-android
2.4.17-android
2.4.2-android
2.4.3-android
2.4.4-android
2.4.5-android
2.4.6-android
2.4.7-android
2.4.8-android
2.4.9-android
2.5.0-android
2.5.1-android
2.5.2-android
2.5.3-android
2.5.4-android
2.5.5-android
2.5.6-android
2.6.0-android
2.6.1-android
2.6.10-android
2.6.11-android
2.6.12-android
2.6.14-android
2.6.15-android
2.6.16-android
2.6.17-android
2.6.18-android
2.6.2-android
2.6.3-android
2.6.4-android
2.6.5-android
2.6.6-android
2.6.7-android
2.6.8-android
2.6.9-android
3.*
3.0.0-android
3.0.0-beta-android
3.0.1-android
3.0.1-beta-android
3.0.10-android
3.0.10-beta-android
3.0.11-android
3.0.11-beta-android
3.0.12-android
3.0.12-beta-android
3.0.13-android
3.0.13-beta-android
3.0.14-android
3.0.14-beta-android
3.0.15-android
3.0.15-beta-android
3.0.16-android
3.0.16-beta-android
3.0.17-android
3.0.17-beta-android
3.0.18-android
3.0.19-android
3.0.2-android
3.0.2-beta-android
3.0.20-android
3.0.21-android
3.0.22-android
3.0.23-android
3.0.24-android
3.0.25-android
3.0.26-android
3.0.27-android
3.0.28-android
3.0.29-android
3.0.3-android
3.0.3-beta-android
3.0.30-android
3.0.31-android
3.0.32-android
3.0.4-android
3.0.4-beta-android
3.0.5-android
3.0.5-beta-android
3.0.6-android
3.0.6-beta-android
3.0.7-android
3.0.7-beta-android
3.0.8-android
3.0.8-beta-android
3.0.9-android
3.0.9-beta-android
3.1.0-android
3.1.0-beta.0-beta-android
3.1.0-beta.1-beta-android
3.1.0-beta.2-beta-android
3.1.0-beta.3-beta-android
3.1.0-beta.4-beta-android
3.1.1-android
3.2.0-android
3.2.0-beta.0-beta-android
3.2.0-beta.1-beta-android
3.2.0-beta.2-beta-android
3.2.0-beta.3-beta-android
3.2.0-beta.4-beta-android
3.2.1-android
3.2.10-android
3.2.11-android
3.2.12-android
3.2.2-android
3.2.3-android
3.2.4-android
3.2.5-android
3.2.7-android
3.2.8-android
3.2.9-android
3.3.0-android
3.3.1-android
3.3.10-android
3.3.10-beta.0-beta-android
3.3.10-beta.1-beta-android
3.3.10-beta.2-beta-android
3.3.10-beta.3-beta-android
3.3.10-beta.4-beta-android
3.3.10-beta.5-beta-android
3.3.10-beta.6-beta-android
3.3.11-android
3.3.12-android
3.3.13-android
3.3.13-beta.0-beta-android
3.3.13-beta.1-beta-android
3.3.14-android
3.3.15-android
3.3.15-beta.0-beta-android
3.3.15-beta.1-beta-android
3.3.16-android
3.3.2-android
3.3.3-android
3.3.4-android
3.3.5-android
3.3.6-android
3.3.7-android
3.3.8-android
3.3.9-android
v2.*
v2.2.0
v2.2.1
v2.2.2
v2.2.3
v2.2.4
v2.3.0
v2.4.0
v2.4.1
v2.4.10
v2.4.11
v2.4.2
v2.4.3
v2.4.4
v2.4.5
v2.4.6
v2.4.7
v2.4.8
v2.4.9
v2.5.0
v2.5.1
v2.5.2
v2.5.3
v2.5.4
v2.5.5
v2.5.6
v2.5.7
v2.5.8
v2.6.0
v2.6.1
v2.6.10
v2.6.11
v2.6.12
v2.6.13
v2.6.14
v2.6.15
v2.6.16
v2.6.17
v2.6.2
v2.6.3
v2.6.4
v2.6.5
v2.6.6
v2.6.7
v2.6.8
v2.6.9
v3.*
v3.0.0
v3.0.0-beta
v3.0.1
v3.0.1-beta
v3.0.10
v3.0.10-beta
v3.0.11
v3.0.11-beta
v3.0.12
v3.0.12-beta
v3.0.13
v3.0.13-beta
v3.0.14
v3.0.14-beta
v3.0.15
v3.0.16
v3.0.17
v3.0.18
v3.0.19
v3.0.2
v3.0.2-beta
v3.0.20
v3.0.21
v3.0.22
v3.0.23
v3.0.24
v3.0.25
v3.0.26
v3.0.27
v3.0.28
v3.0.29
v3.0.3
v3.0.3-beta
v3.0.30
v3.0.31
v3.0.32
v3.0.4
v3.0.4-beta
v3.0.5
v3.0.5-beta
v3.0.6
v3.0.6-beta
v3.0.7
v3.0.7-beta
v3.0.8
v3.0.8-beta
v3.0.9
v3.0.9-beta
v3.1.0
v3.1.0-beta.0
v3.1.0-beta.1
v3.1.0-beta.2
v3.1.0-beta.3
v3.1.0-beta.4
v3.1.0-beta.5
v3.1.0-beta.6
v3.1.1
v3.2.0
v3.2.0-beta.0
v3.2.0-beta.1
v3.2.0-beta.2
v3.2.0-beta.3
v3.2.0-beta.4
v3.2.0-beta.5
v3.2.0-beta.6
v3.2.0-beta.7
v3.2.0-beta.8
v3.2.0-beta.9
v3.2.2
v3.2.3
v3.2.4
v3.3.0
v3.3.0-beta.0
v3.3.0-beta.1
v3.3.1
v3.3.10
v3.3.2
v3.3.3
v3.3.4
v3.3.5
v3.3.6
v3.3.6-beta.0
v3.3.6-beta.1
v3.3.6-beta.2
v3.3.6-beta.3
v3.3.7
v3.3.8
v3.3.8-beta.0
v3.3.8-beta.1
v3.3.9
v3.3.9-beta.1
v3.3.9-beta.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33976.json"