PatchTheCVECVE-2026-49293: js-toml is a TOML parser for JavaScript, fully compliant with the TOML 1.0.0 Spec
CVE-2026-49293 is a high-severity flaw (CVSS 7.5) affecting js-toml. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
js-toml is a TOML parser for JavaScript, fully compliant with the TOML 1.0.0 Spec. Versions up to and including 1.1.0 parse hexadecimal / octal / binary integer literals via a hand-written `parseBigInt` loop that multiplies a `BigInt` accumulator by the radix once per input digit. Each iteration performs a `BigInt * BigInt` operation on an accumulator that grows linearly with the number of digits already consumed, so the whole loop is O(n²) in th
Why this priority
- High severity
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-49293?
js-toml: upgrade to 1.1.1. Exact commands for each OS are on this page.
Is CVE-2026-49293 being exploited?
CVE-2026-49293 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-49293 affect?
CVE-2026-49293 affects js-toml. Severity is high (CVSS 7.5). js-toml is a TOML parser for JavaScript, fully compliant with the TOML 1.0.0 Spec. Versions up to and including 1.1.0 parse hexadecimal / octal / binary integer literals via a hand-written `parseBigInt` loop that multiplies a `BigInt` accum
How urgent is CVE-2026-49293?
Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action