Arbitrary shell execution via unchecked FFI operations
Published Mar 25, 2022 · Updated Apr 23, 2025
Incorrect authorization in Deno 1.18.0 through 1.20.2 allows remote attackers controlling runtime code to execute arbitrary shell code. Certain FFI ops callable through Deno.core fail to enforce the runtime's unstable-feature permission check, exposing native loading and pointer operations. The attacker must cause malicious JavaScript or TypeScript to run inside the local runtime; Deno Deploy is not affected.
Summary
What happened
Incorrect authorization in Deno 1.18.0 through 1.20.2 allows remote attackers controlling runtime code to execute arbitrary shell code. Certain FFI ops callable through Deno.core fail to enforce the runtime's unstable-feature permission check, exposing native loading and pointer operations. The attacker must cause malicious JavaScript or TypeScript to run inside the local runtime; Deno Deploy is not affected.
The record
- CVE
- CVE-2022-24783
- Published
- Mar 25, 2022
- Updated
- Apr 23, 2025
- Vendor
- Deno Land Inc.
- Product
- Deno
- Classifications
- CWE-863, CWE-269, T1059
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 25, 2022CVE publishedPublication date reported by the CVE source.
- Apr 23, 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=>= 1.18.0, < 1.20.3
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
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Your stack
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