| Name | CVE-2026-61814 |
| 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| jawn (PTS) | forky, sid, bookworm, trixie | 0.11.1+really0.6.0-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| jawn | source | (unstable) | (unfixed) | | | |
Notes
[trixie] - jawn <no-dsa> (Minor issue)
[bookworm] - jawn <postponed> (Minor issue; needs AsyncParser, which no reverse dependency uses)
https://github.com/typelevel/jawn/security/advisories/GHSA-w4cm-gvhj-cgw6
Fixed by: https://github.com/typelevel/jawn/commit/cddcd5e3387c356b05953f7b2af103d309687e4b (v1.7.0)