Parser crash via unconsumed malformed JSON
Published Sep 16, 2022 · Updated Apr 21, 2025
Denial of service in Jettison before 1.5.1 allows attackers to crash its parser by supplying malformed JSON input. When an object or array opens and the input ends with a slash, JSONTokener.nextClean backs up without consuming the slash, and nextValue recursively creates JSONObjects until the Java stack is exhausted. Reachability requires an integrating application to pass attacker-controlled JSON to Jettison; successful triggering crashes the parser and interrupts its processing thread.
Summary
What happened
Denial of service in Jettison before 1.5.1 allows attackers to crash its parser by supplying malformed JSON input. When an object or array opens and the input ends with a slash, JSONTokener.nextClean backs up without consuming the slash, and nextValue recursively creates JSONObjects until the Java stack is exhausted. Reachability requires an integrating application to pass attacker-controlled JSON to Jettison; successful triggering crashes the parser and interrupts its processing thread.
The record
- CVE
- CVE-2022-40149
- Published
- Sep 16, 2022
- Updated
- Apr 21, 2025
- Vendor
- Jettison
- Product
- Jettison
- Classifications
- CWE-787, CWE-121, T1499.004
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 16, 2022CVE publishedPublication date reported by the CVE source.
- Apr 21, 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=unspecified <=1.4.0
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
- Malformed terminal-slash JSON proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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