CVE-2026-63386

See a problem?
Please try reporting it to the source first.

Source

https://cve.org/CVERecord?id=CVE-2026-63386

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63386.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-63386

Aliases

GHSA-3g82-77xr-68x5

Published

2026-09-22T19:00:19Z

Modified

2026-09-24T03:45:42Z

Severity

5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator

Summary

js-toml: Uncontrolled recursion in `load()` causes `RangeError` (stack exhaustion) on deeply nested input

Details

js-toml is a TOML parser for JavaScript. Prior to 1.1.3, load() does not bound nesting or dotted-key depth in the recursive parser at src/load/parser.ts or the interpreter at src/load/interpreter.ts, so deeply nested arrays, deeply nested inline tables, or long dotted keys can exhaust the V8 call stack and throw a raw RangeError instead of the documented SyntaxParseError. Applications that parse attacker-controlled TOML and handle only SyntaxParseError can rethrow the unexpected exception, which can terminate a worker or process and cause denial of service. The exception is synchronous and catchable by consumers that handle all exceptions, and the issue does not affect confidentiality or integrity. This issue is fixed in version 1.1.3.

Database specific

{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-674"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63386.json"
}

References

Affected packages

Git / github.com/sunnyadn/js-toml

Affected ranges

Type

GIT

Repo

https://github.com/sunnyadn/js-toml

Events

Introduced

Fixed

4e10acf1f99ff3cb443c58b8f0a57664e41e87c6

Fixed

fcb1fa379a722f006acb464c59b3a371994311f9

Database specific

Show details

{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "1.1.3"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v0.*

v0.1.0

v0.1.1

v1.*

v1.0.0

v1.0.1

v1.0.2

v1.0.3

v1.1.0

v1.1.1

v1.1.2

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63386.json"