Loading
Loading
We use strictly necessary cookies to run this site, and analytics cookies to understand how it's used. See our Privacy Policy for details.
A GitHub-reviewed security advisory, not necessarily under active exploitation the way our CISA KEV advisories are, but a real, disclosed vulnerability in an open-source dependency.
Affected packages
Vulnerable: <= 1.6.0
Patched in 1.7.0
Vulnerable: <= 1.6.0
Patched in 1.7.0
Vulnerable: <= 1.6.0
Patched in 1.7.0
Details
AsyncParser can be forced to perform O(n^2) work on the length of the input. When a single JSON token arrives across many small chunks, each absorb call rescans the incomplete token from the start.
Denial of service via CPU exhaustion when parsing untrusted JSON.
Preconditions:
AsyncParserFixed in jawn-parser-1.7.0.
If you can't upgrade immediately:
Parser.absorbEPSS, exploit probability
Low0.75%
estimated chance of real-world exploitation in the next 30 days, higher than 55.2% of every CVE FIRST.org scores
Refreshed 11/8/2026, via FIRST.org's EPSS model, not CVSS, this measures likelihood of exploitation, not how severe it would be.
Talk to us about this
Find out whether this dependency (or others like it) is actually reachable in your codebase.
Get help patching, or building dependency-scanning into your pipeline going forward.
A secure code review or supply chain review finds this before an advisory does.