Unchecked Input for Loop Condition Affecting smol-toml package, versions <1.7.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-SMOLTOML-19643959
- published8 Sept 2026
- disclosed4 Sept 2026
- creditRavi-lk
Introduced: 4 Sep 2026
NewCVE-2026-85730 (opens in a new tab)How to fix?
Upgrade smol-toml to version 1.7.1 or higher.
Overview
smol-toml is an A small, fast, and correct TOML parser/serializer
Affected versions of this package are vulnerable to Unchecked Input for Loop Condition due to the skipUntil comment-skipping logic in src/util.ts. An attacker can hang parse() by supplying a TOML document with a value in an array or inline table followed by a # comment that runs to end of input without a trailing newline. The parser gets stuck in an internal loop while searching for the end of the structure, pinning CPU and preventing the application from completing TOML parsing.