Information disclosure via unrestricted dictsort key resolution
Published Jan 4, 2022 · Updated May 22, 2025
Information disclosure in Django 2.2 through 2.2.25, 3.2 through 3.2.10, and 4.0 allows remote attackers to expose data via crafted dictsort keys. The dictsort filter passed its sort key to Variable.resolve(), enabling dictionary indexing and automatic method calls during template resolution. Reachability requires an application template to pass untrusted input as the filter key; exposed objects can disclose attributes or invoke accessible methods.
Summary
What happened
Information disclosure in Django 2.2 through 2.2.25, 3.2 through 3.2.10, and 4.0 allows remote attackers to expose data via crafted dictsort keys. The dictsort filter passed its sort key to Variable.resolve(), enabling dictionary indexing and automatic method calls during template resolution. Reachability requires an application template to pass untrusted input as the filter key; exposed objects can disclose attributes or invoke accessible methods.
The record
- CVE
- CVE-2021-45116
- Published
- Jan 4, 2022
- Updated
- May 22, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-20, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 4, 2022CVE publishedPublication date reported by the CVE source.
- May 22, 2025Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
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Published CVSS scores
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Attacks
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Technologies
Your stack
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