CVE-2024-38522Public exploitNetwork attack vector

JavaScript execution via permissive CSP source

Published Jun 28, 2024 · Updated Aug 2, 2024

Content Security Policy bypass in Hush Line before 0.1.0 allows remote attackers to execute JavaScript when a recipient views a crafted tip. The default script-src directive trusts all of unpkg.com, so injected tip HTML can load arbitrary npm-hosted scripts instead of limiting Stripe code. Exploitation requires the separate persistent HTML-injection path and recipient interaction, exposing data and actions available in the recipient's browser session.

CVSS severity6.3
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Content Security Policy bypass in Hush Line before 0.1.0 allows remote attackers to execute JavaScript when a recipient views a crafted tip. The default script-src directive trusts all of unpkg.com, so injected tip HTML can load arbitrary npm-hosted scripts instead of limiting Stripe code. Exploitation requires the separate persistent HTML-injection path and recipient interaction, exposing data and actions available in the recipient's browser session.

The record

CVE
CVE-2024-38522
Published
Jun 28, 2024
Updated
Aug 2, 2024
Vendor
Science & Design, Inc.
Product
Hush Line
Classifications
CWE-697, CWE-183, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 28, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 0.1.0
  2. Affected versionversion=0.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Science & Design, Inc. · Hush Lineversion=< 0.1.0; version=0.1.0

Published CVSS scores

6.3GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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 exploitPublished

Weakness, pattern, technique

CWE-697Incorrect Comparison
CWE-183Permissive List of Allowed Inputs
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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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