Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/typelevel/jawn/commit/cddcd5e3387c356b05953f7b2af103d309687e4
- https://github.com/typelevel/jawn/releases/tag/v1.7.0
- https://github.com/typelevel/jawn/security/advisories/GHSA-w4cm-gvhj-cgw6
FAQ
What is CVE-2026-61814?
CVE-2026-61814 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 in...
How severe is CVE-2026-61814?
CVE-2026-61814 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-61814?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.