Script base URL disclosure via dynamic import
Published Jun 19, 2023 · Updated May 27, 2025
Information disclosure in Mozilla Firefox before 113 allows remote attackers to reveal a service worker script's base URL via dynamic import(). Mozilla has not publicly disclosed which service-worker implementation locus exposes the base URL or the incorrect operation that returns it. Exploitation requires attacker-controlled web content to invoke dynamic import() in a service worker; the reported consequence is URL disclosure only.
Summary
What happened
Information disclosure in Mozilla Firefox before 113 allows remote attackers to reveal a service worker script's base URL via dynamic import(). Mozilla has not publicly disclosed which service-worker implementation locus exposes the base URL or the incorrect operation that returns it. Exploitation requires attacker-controlled web content to invoke dynamic import() in a service worker; the reported consequence is URL disclosure only.
The record
- CVE
- CVE-2023-32208
- Published
- Jun 19, 2023
- Updated
- May 27, 2025
- Vendor
- Mozilla
- Product
- Firefox
- Classifications
- Unavailable
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 19, 2023CVE publishedPublication date reported by the CVE source.
- May 27, 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?
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- Affected versionversion=unspecified <113
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
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Weakness, pattern, technique
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Public exploit references
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Technologies
Your stack
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Your stack
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