CVE-2026-73086: ai nanoid · Integer Overflow or Wraparound
Affects ai nanoidSource CVE Database V5
Not known to be exploited · CVSS 7.4 High : upgrade to 5.1.11 or 3.3.12 soon.
Data as of 8 Nov 2026, 23:24 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 22% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.1.11, 3.3.12
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 11 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.
What to do
Upgrade ai nanoid to 5.1.11 or 3.3.12.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| ainanoid | Affected
| Fixed in
|
| ainanoid | Affected
| Fixed in
|
AI-suggested
This vulnerability is fixed in ai nanoid versions 3.3.12 and 5.1.11. Users should upgrade to these or later versions to remediate the issue. No other mitigation or workaround is indicated. Patch status is confirmed by the version fix information in the description.
Description
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.
References
- github.com/ai/nanoid/security/advisories/GHSA-xwg4-73v4-xw9w (opens in a new tab)
- github.com/ai/nanoid/commit/7087969281cab8ba8ae3babf1894e819068b3bb4 (opens in a new tab)
- github.com/ai/nanoid/commit/821dfed7b5db7f88e92f56c60eef32c8135077c3 (opens in a new tab)
- github.com/ai/nanoid/commit/b0036ed60dc9facd7f1191a50dfb3076500202ac (opens in a new tab)
- github.com/ai/nanoid/releases/tag/3.3.12 (opens in a new tab)
- github.com/ai/nanoid/releases/tag/5.1.11 (opens in a new tab)