node-mocha: nanoid is a secure, URL-friendly, unique string ID generator for JavaScript
CVE-2026-73086 is fixed in 6 products on 1 platform, first by DEBIAN-CVE-2026-73086, released August 13, 2026. It is not reported as exploited. Patch Radar priority: High.
nanoid is a secure, URL-friendly, unique string ID generator for JavaScript. Prior to versions 3.3.12 and 5.1.11, the nanoid(size) function in index.js and index.cjs coerces the user-influenced size parameter to a signed 32-bit integer, allowing a value of 2147483648 to become -2147483648 and corrupt the process-wide CSPRNG poolOffset in fillPool(), which causes subsequent session tokens, CSRF tokens, API keys, and unique identifiers to become the deterministic string "uuuuuuuuuuuuuuuuuuuuu" until the process restarts. This issue is fixed in versions 3.3.12 and 5.1.11.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| node-mocha · Debian 12.15 (bookworm) | 9.1.4+ds1+~cs28.2.8-1 | DEBIAN-CVE-2026-73086 | Aug 13, 2026 |
| node-mocha · Debian 13.5 (trixie) | 9.1.4+ds1+~cs28.2.8-1 | DEBIAN-CVE-2026-73086 | Aug 13, 2026 |
| node-mocha · Debian 14 | 9.1.4+ds1+~cs28.2.8-1 | DEBIAN-CVE-2026-73086 | Aug 13, 2026 |
| node-postcss · Debian 14 | 8.5.14+~cs9.3.34-1 | DEBIAN-CVE-2026-73086 | Aug 13, 2026 |
| python-jupytext · Fedora 43 | 1.19.6-1.fc43 | FEDORA-2026-3942AB86FD | Oct 5, 2026 |
| python-jupytext-doc · Fedora 43 | 1.19.6-1.fc43 | FEDORA-2026-3942AB86FD | Oct 5, 2026 |
| python3-jupyterlab-jupytext · Fedora 43 | 1.19.6-1.fc43 | FEDORA-2026-3942AB86FD | Oct 5, 2026 |
| python3-jupytext · Fedora 43 | 1.19.6-1.fc43 | FEDORA-2026-3942AB86FD | Oct 5, 2026 |
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