CVE-2026-61814

EUVD-2026-85551
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
GitHub_MCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
typeleveljawn
𝑥
< 1.7.0
CNA
Common Weakness Enumeration
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