HIGH 7.5 NVD
CVE-2026-61814
Jawn is an open source JSON parser. Prior to 1.7.0, Jawn's AsyncParser can perform quadratic work when a single JSON token is delivered across many small chunks
Jawn is an open source JSON parser. Prior to 1.7.0, Jawn's AsyncParser can perform quadratic work when a single JSON token is delivered across many small chunks because each absorb call rescans the incomplete token from the start. A remote attacker who controls untrusted JSON input and its chunk sizes can exhaust CPU resources and cause denial of service in applications using AsyncParser. This issue is fixed in version 1.7.0.
References
- https://github.com/typelevel/jawn/commit/cddcd5e3387c356b05953f7b2af103d309687e4b
- https://github.com/typelevel/jawn/releases/tag/v1.7.0
- https://github.com/typelevel/jawn/security/advisories/GHSA-w4cm-gvhj-cgw6
This high severity vulnerability with a CVSS score of 7.5 was published on 2026-09-23 via NVD.
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