Vulnerability Description
smol-toml is a small, fast, and correct TOML parser and serializer. Prior to 1.7.1, parse() can enter an infinite loop when a value inside an array or inline table is followed by a comment with no trailing newline. In src/util.ts, skipUntil() calls indexOfNewline(), receives -1 at the end of input, and resets the cursor to the beginning of the string instead of leaving the structure scan. The parser then hangs indefinitely and can consume a service's processing capacity when an application parses attacker-controlled TOML. This issue is fixed in version 1.7.1.
Related Weaknesses (CWE)
References
- https://github.com/squirrelchat/smol-toml/commit/30f5c367d946b695f379b5d4f0946b2
- https://github.com/squirrelchat/smol-toml/releases/tag/v1.7.1
- https://github.com/squirrelchat/smol-toml/security/advisories/GHSA-7w5x-hrqm-74c
- https://medium.com/@ravindu.lakmina1/seven-bytes-that-freeze-a-node-js-server-fo
- https://github.com/squirrelchat/smol-toml/security/advisories/GHSA-7w5x-hrqm-74c
FAQ
What is CVE-2026-85730?
CVE-2026-85730 is a documented vulnerability. smol-toml is a small, fast, and correct TOML parser and serializer. Prior to 1.7.1, parse() can enter an infinite loop when a value inside an array or inline table is followed by a comment with no tra...
How severe is CVE-2026-85730?
CVSS scoring is not yet available for CVE-2026-85730. Check NVD for updates.
Is there a patch for CVE-2026-85730?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.