Malicious script execution via hardcoded CDN reference
Published Jun 25, 2024 · Updated Feb 13, 2025
Third-party dependency exposure in mitmproxy pdoc before 14.5.1 allows attackers to execute malicious JavaScript through math-mode output. The math.html.jinja2 template hardcodes a polyfill.io script element into documentation generated with the math option, causing browsers to fetch and execute CDN-controlled code. The condition requires math mode, which is disabled by default; visitors to affected generated documentation can be redirected or exposed to other browser-delivered malware.
Summary
What happened
Third-party dependency exposure in mitmproxy pdoc before 14.5.1 allows attackers to execute malicious JavaScript through math-mode output. The math.html.jinja2 template hardcodes a polyfill.io script element into documentation generated with the math option, causing browsers to fetch and execute CDN-controlled code. The condition requires math mode, which is disabled by default; visitors to affected generated documentation can be redirected or exposed to other browser-delivered malware.
The record
- CVE
- CVE-2024-38526
- Published
- Jun 25, 2024
- Updated
- Feb 13, 2025
- Vendor
- mitmproxy
- Product
- pdoc
- Classifications
- CWE-1395, T1189
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 25, 2024CVE publishedPublication date reported by the CVE source.
- Feb 13, 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.
- Affected versionversion=0 <14.5.1
- Affected versionversion=< 14.5.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
- Polyfill malicious payload examplefunctional · observed in use
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Reported exploitation
- Polyfill.io supply-chain malware injectionreported exploitation
Technologies
Your stack
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Your stack
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