Document privilege escalation via principal-order assumption
Published Jun 19, 2023 · Updated May 27, 2025
Improper privilege management in Mozilla Firefox before 113 allows remote attackers to load a document with an unintended principal. Document::MaybeDowngradePrincipal assumes an ExpandedPrincipal allowlist order even though entries are sorted alphabetically, so it can select a more privileged principal. Exploitation requires user interaction with attacker-controlled content in an expanded-principal context and can alter document integrity through elevated privileges.
Summary
What happened
Improper privilege management in Mozilla Firefox before 113 allows remote attackers to load a document with an unintended principal. Document::MaybeDowngradePrincipal assumes an ExpandedPrincipal allowlist order even though entries are sorted alphabetically, so it can select a more privileged principal. Exploitation requires user interaction with attacker-controlled content in an expanded-principal context and can alter document integrity through elevated privileges.
The record
- CVE
- CVE-2023-32210
- Published
- Jun 19, 2023
- Updated
- May 27, 2025
- Vendor
- Mozilla
- Product
- Firefox
- Classifications
- T1203
- 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
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.
- 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
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
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
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo