CVE-2026-61814
High · 7.5CVSS
7.5
EPSS
0.6%
Published
Sep 23, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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