CVE-2026-2739
- State
- Published
- Severity
- 6.9 Medium
- Published
- Feb 20, 2026
- Updated
- Feb 20, 2026
- Reserved
- Feb 19, 2026
Description
This affects versions of the package bn.js before 5.2.3. Calling maskn(0) on any BN instance corrupts the internal state, causing toString(), divmod(), and other methods to enter an infinite loop, hanging the process indefinitely.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P | snyk |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P | snyk |
Weaknesses
- CWE-835 Infinite loop
Affected Products
| Product | Versions |
|---|---|
bn.jsn/a |
|
References
- https://security.snyk.io/vuln/SNYK-JS-BNJS-15274301
- https://github.com/indutny/bn.js/issues/316
- https://github.com/indutny/bn.js/issues/186
- https://gist.github.com/Kr0emer/02370d18328c28b5dd7f9ac880d22a91
- https://github.com/indutny/bn.js/pull/317
- https://github.com/indutny/bn.js/commit/33df26b5771e824f303a79ec6407409376baa64b
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