CVE-2025-1987Network attack vector

Stored XSS via unsanitized vault-entry URLs

Published Jun 21, 2025 · Updated Jun 23, 2025

Stored XSS in Psono Client 4.0.4 and earlier and Bitdefender SecurePass allows remote attackers to run JavaScript through vault entries. The client accepts javascript: URLs in website_password and bookmark URL fields without sanitizing the scheme, then executes them in the vault context. Exploitation requires a user to create, import, click, or open the crafted entry and can expose passwords and other vault data.

CVSS severity9.3
Critical
EPSS probability0.53%
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 Psono Client 4.0.4 and earlier and Bitdefender SecurePass allows remote attackers to run JavaScript through vault entries. The client accepts javascript: URLs in website_password and bookmark URL fields without sanitizing the scheme, then executes them in the vault context. Exploitation requires a user to create, import, click, or open the crafted entry and can expose passwords and other vault data.

The record

CVE
CVE-2025-1987
Published
Jun 21, 2025
Updated
Jun 23, 2025
Vendor
Psono
Product
Psono Client
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 23, 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=0 <=4.0.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Psono · Psono Clientversion=0 <=4.0.4
Bitdefender · Bitdefender SecurePassversion=0 <0.0.76; version=0 <1.0.10; version=0 <1.1.18; version=0 <1.1.22

Published CVSS scores

9.3BitdefenderCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA: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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

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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