CVE-2022-3877Public exploitNetwork attack vector

Stored script execution via accepted JavaScript URL

Published Dec 19, 2022 · Updated Apr 15, 2025

Stored XSS in Click Studios Passwordstate before build 9653 allows remote authenticated users to execute script through a saved URL. URL validation accepts the JavaScript protocol, while the interface largely hides the stored target before opening it. Exploitation requires a malicious password entry and a victim click; script runs in the Passwordstate origin with the victim's permitted access.

CVSS severity5.4
Medium
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Click Studios Passwordstate before build 9653 allows remote authenticated users to execute script through a saved URL. URL validation accepts the JavaScript protocol, while the interface largely hides the stored target before opening it. Exploitation requires a malicious password entry and a victim click; script runs in the Passwordstate origin with the victim's permitted access.

The record

CVE
CVE-2022-3877
Published
Dec 19, 2022
Updated
Apr 15, 2025
Vendor
Click Studios
Product
Passwordstate Browser Extension
Classifications
CWE-79, CWE-707, T1204.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 19, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 2025Record 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=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Click Studios · Passwordstate Browser Extensionversion=n/a
Click Studios · Passwordstateversion=n/a

Published CVSS scores

3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-707Improper Neutralization
T1204.001Malicious Link

Public exploit references

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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