CVE-2026-78325

Encryption-key theft via unsafe importer HTML parsing

Published Sep 7, 2026 · Updated Sep 8, 2026

Cross-site scripting in Standard Notes for Android through 3.201.24 allows attackers to steal encryption keys and note data. The Evernote and Google Keep importers assigned attacker-controlled markup to innerHTML and rebuilt elements through outerHTML, allowing active content into the application context. Exploitation requires a victim to import a crafted .enex or Google Keep HTML file; the resulting script can read note data and invoke native device APIs.

CVSS severityUnavailable
Unscored
EPSS probability0.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Standard Notes for Android through 3.201.24 allows attackers to steal encryption keys and note data. The Evernote and Google Keep importers assigned attacker-controlled markup to innerHTML and rebuilt elements through outerHTML, allowing active content into the application context. Exploitation requires a victim to import a crafted .enex or Google Keep HTML file; the resulting script can read note data and invoke native device APIs.

The record

CVE
CVE-2026-78325
Published
Sep 7, 2026
Updated
Sep 8, 2026
Vendor
Standard Notes
Product
Standard Notes
Classifications
CWE-79, CAPEC-63, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=v3.201.24

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Standard Notes · Standard Notesversion=0 <=v3.201.24

Published CVSS scores

6.9Proton CNACVSS: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 describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-63Cross-Site Scripting (XSS)
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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