CVE-2023-26135
flatnest Prototype Pollution vulnerability
All versions of the package flatnest are vulnerable to Prototype Pollution via the nest() function in the flatnest/nest.js file.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
All versions of the package flatnest are vulnerable to Prototype Pollution via the nest() function in the flatnest/nest.js file.
- Record
CVE-2023-26135- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P - Weakness
- CWE-1321
- Updated
- 2026-11-02
EUVDEUVD-2023-1736
All versions of the package flatnest are vulnerable to Prototype Pollution via the nest() function in the flatnest/nest.js file.
- Record
EUVD-2023-1736- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-7px2-3c2p-q4v4
flatnest Prototype Pollution vulnerability
All versions of the package flatnest are vulnerable to Prototype Pollution via the nest() function in flatnest/nest.js file.
- Record
GHSA-7px2-3c2p-q4v4- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-1321
- Updated
- 2026-11-02
NVD
All versions of the package flatnest are vulnerable to Prototype Pollution via the nest() function in the flatnest/nest.js file.
- Record
CVE-2023-26135- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-1321
- Updated
- 2026-11-02
OSV
All versions of the package flatnest are vulnerable to Prototype Pollution via the nest() function in the flatnest/nest.js file.
- Record
CVE-2023-26135- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P - Weakness
- CWE-1321
- Updated
- 2026-11-02
OSVGHSA-7px2-3c2p-q4v4
flatnest Prototype Pollution vulnerability
All versions of the package flatnest are vulnerable to Prototype Pollution via the nest() function in flatnest/nest.js file.
- Record
GHSA-7px2-3c2p-q4v4- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-1321
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
flatnestnpm |
through 1.0.0 | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-26135 is a high vulnerability (CVSS 7.3) in Flatnest Project Flatnest, published June 30, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.89%, the 59th percentile. No source names a fixed version.
References
security.snyk.io/vuln/SNYK-JS-FLATNEST-3185149
github.com/brycebaril/node-flatnest/issues/4
nvd.nist.gov/vuln/detail/CVE-2023-26135