CVE-2026-73086

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Source
https://cve.org/CVERecord?id=CVE-2026-73086
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-73086.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-73086
Aliases
Downstream
Published
2026-08-11T16:46:23Z
Modified
2026-08-14T03:53:27Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
nanoid: Integer Overflow or Wraparound
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-190"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73086.json"
}
References

Affected packages

Git / github.com/ai/nanoid

Affected ranges

Type
GIT
Repo
https://github.com/ai/nanoid
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Introduced
fd80ce3f462d3309c31d07dc3b3ec2f3e0a0fc9f
Fixed
aa9c399f6915fb8aaf957ac9290321be932ac252
Fixed
5423cf56499c1ea33ea4bd9fbaab1723083cb659
Fixed
7087969281cab8ba8ae3babf1894e819068b3bb4
Fixed
821dfed7b5db7f88e92f56c60eef32c8135077c3
Fixed
b0036ed60dc9facd7f1191a50dfb3076500202ac
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "3.3.12"
        },
        {
            "introduced":  "4.0.0"
        },
        {
            "fixed":  "5.1.11"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

0.*
0.1.0
0.1.1
0.2.0
0.2.1
0.2.2
1.*
1.0.0
1.0.1
1.0.2
1.0.3
1.0.4
1.0.5
1.0.6
1.0.7
1.1.0
1.1.1
1.2.0
1.2.1
1.2.2
1.2.3
1.2.4
1.2.5
1.2.6
1.3.0
1.3.1
1.3.2
1.3.3
1.3.4
2.*
2.0.0
2.0.1
2.0.2
2.0.3
2.0.4
2.1.0
2.1.1
2.1.10
2.1.11
2.1.2
2.1.3
2.1.4
2.1.5
2.1.6
2.1.7
2.1.8
2.1.9
3.*
3.0.0
3.0.1
3.0.2
3.1.0
3.1.1
3.1.10
3.1.11
3.1.12
3.1.13
3.1.14
3.1.15
3.1.16
3.1.17
3.1.18
3.1.19
3.1.2
3.1.20
3.1.21
3.1.22
3.1.23
3.1.24
3.1.25
3.1.26
3.1.27
3.1.28
3.1.29
3.1.30
3.1.31
3.1.32
3.1.4
3.1.5
3.1.6
3.1.7
3.1.8
3.1.9
3.2.0
3.3.0
3.3.1
3.3.10
3.3.11
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.3.8
3.3.9
4.*
4.0.0
4.0.1
4.0.2
5.*
5.0.0
5.0.1
5.0.2
5.0.3
5.0.4
5.0.5
5.0.6
5.0.7
5.0.8
5.0.9
5.1.0
5.1.1
5.1.10
5.1.2
5.1.3
5.1.4
5.1.5
5.1.6
5.1.7
5.1.8
5.1.9

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-73086.json"