XSS in Standard Notes on Android via Malicious Google Keep and Evernote HTML Import

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-78325
StatePUBLISHED
AssignerProton
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-07 12:17:19 UTC
Updated2026-09-09 15:52:04 UTC
DescriptionCross-site scripting in the Evernote and Google Keep note importers in Standard Notes for Android through 3.201.24 allows an attacker to execute arbitrary JavaScript in the application context when a victim imports a crafted .enex or Google Keep HTML file, leading to theft of encryption keys and note data, and arbitrary invocation of native device APIs.

Risk And Classification

Primary CVSS: v4.0 6.9 MEDIUM from b2fa7fcc-7d08-41f0-853b-11242c5539db

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

EPSS: 0.000880000 probability, percentile 0.004260000 (date 2026-09-09)

Problem Types: CWE-79 | CWE-79 CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')

VersionSourceTypeScoreSeverityVector
4.0b2fa7fcc-7d08-41f0-853b-11242c5539dbSecondary6.9MEDIUMCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/C...
4.0CNACVSS6.9MEDIUMCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P

CVSS v4.0 Breakdown

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
Active
Confidentiality
High
Integrity
High
Availability
None
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Standard Notes Standard Notes affected v3.201.24 semver Android

References

ReferenceSourceLinkTags
github.com/standardnotes/app/compare/%40standardnotes/desktop%403.201.24... b2fa7fcc-7d08-41f0-853b-11242c5539db github.com
proton.me/security/security-advisories b2fa7fcc-7d08-41f0-853b-11242c5539db proton.me
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Luca Regne, https://regne.me/ (en)

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