Enforce StreamReadConstraints.maxNumberLength for non-blocking (async) parser#1555
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StreamReadConstraints.maxNumberLength for non-blocking (async) parser
cowtowncoder
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Feb 22, 2026
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LGTM, will merge first thing tomorrow.
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Hi there @cowtowncoder @pjfanning, I work in Product Security over at Red Hat. We had a reporter reach out to us concerned that this should be considered a security vulnerability. If you don't mind, I was going to assign a CVE id to track this. Is this alright with you? If so, let me know if anyone would like credit for the discovery and/or if @pjfanning want's credit for the fix. Thanks! |
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@cebarks we have GHSA-72hv-8253-57qq We don't view this as CVE worthy. The effect of numbers with multi thousand digits is non-linear CPU time parsing the number. We use Java Runtime to do this parsing. If Jackson has an issue, then so does the Java Runtime. |
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Gotcha, totally reasonable. I'll defer to your judgement and skip assigning a CVE. Thanks for your quick response! |
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To avoid the 'Allocation of Resources Without Limits or Throttling' vulnerability: FasterXML/jackson-core#1555
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To avoid the 'Allocation of Resources Without Limits or Throttling' vulnerability: FasterXML/jackson-core#1555
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To avoid the 'Allocation of Resources Without Limits or Throttling' vulnerability: FasterXML/jackson-core#1555
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To avoid the 'Allocation of Resources Without Limits or Throttling' vulnerability: FasterXML/jackson-core#1555
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validate number length against constraints in async parser