CVE-2025-46499Network attack vector

Stored script execution via undisclosed input handling

Published Apr 24, 2025 · Updated Apr 28, 2026

Stored cross-site scripting in hccoder PayPal Express Checkout 2.1.2 and earlier allows remote attackers to inject browser-executed content. Patchstack has not published the affected input, storage location, rendering path, or missing output-neutralization operation. Exploitation requires a victim to load the stored content; successful script execution can alter displayed content and act within that browser session.

CVSS severity7.1
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in hccoder PayPal Express Checkout 2.1.2 and earlier allows remote attackers to inject browser-executed content. Patchstack has not published the affected input, storage location, rendering path, or missing output-neutralization operation. Exploitation requires a victim to load the stored content; successful script execution can alter displayed content and act within that browser session.

The record

CVE
CVE-2025-46499
Published
Apr 24, 2025
Updated
Apr 28, 2026
Vendor
PayPal
Product
PayPal Express Checkout
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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 <=2.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

PayPal · PayPal Express Checkoutversion=0 <=2.1.2

Published CVSS scores

7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

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')
T1189Drive-by Compromise

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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