# CVE-2023-30797: Insecure Random Generation in Netflix Lemur

Status: published. Published: 2023-04-19. Updated: 2026-11-08.

Netflix Lemur before version 1.3.2 used insufficiently random values when generating default credentials. The insufficiently random values may allow an attacker to guess the credentials and gain access to resources managed by Lemur.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/Netflix/lemur/commit/666d853212174ee7f4e6f8b3b4b389ede1872238
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: ADP: CVE) — https://github.com/Netflix/lemur/commit/666d853212174ee7f4e6f8b3b4b389ede1872238
- fix: lemur (PyPI): OSV reports a fixed version 1.3.2. Check the advisory for supported release branches. (source: OSV GHSA-5fqv-mpj8-h7gm) — https://github.com/advisories/GHSA-5fqv-mpj8-h7gm

## Affected products and versions

- Netflix / Lemur (lemur): ≥ 0; < 1.3.2 (affected, semver). Source: CNA: VulnCheck
-  / lemur (lemur): 0.11.0 (affected, PyPI); 0.2.1 (affected, PyPI); 0.8.0 (affected, PyPI); 0.8.1 (affected, PyPI); 0.9.0 (affected, PyPI); 1.0.0 (affected, PyPI); 1.1.0 (affected, PyPI); 1.2.0 (affected, PyPI); 1.3.1 (affected, PyPI); Ecosystem version events: introduced 0; fixed 1.3.2. Source: OSV GHSA-5fqv-mpj8-h7gm

## Severity and prioritization

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N; source: CNA: VulnCheck

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N; source: ADP: CISA-ADP

- CISA KEV: No listing in collected sources

- EPSS: 0.79% as of 2026-11-08; percentile 56.55%

- SSVC: exploitation none; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-330

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/Netflix/security-bulletins/blob/master/advisories/nflx-2023-001.md (CNA: VulnCheck; vendor-advisory)

- https://github.com/Netflix/lemur/commit/666d853212174ee7f4e6f8b3b4b389ede1872238 (CNA: VulnCheck; patch)

- https://github.com/Netflix/lemur/security/advisories/GHSA-5fqv-mpj8-h7gm (CNA: VulnCheck; vendor-advisory)

- https://vulncheck.com/advisories/netflix-lemur-weak-rng (CNA: VulnCheck; third-party-advisory)

- https://github.com/Netflix/security-bulletins/blob/master/advisories/nflx-2023-001.md (ADP: CVE; vendor-advisory, x_transferred)

- https://github.com/Netflix/lemur/commit/666d853212174ee7f4e6f8b3b4b389ede1872238 (ADP: CVE; patch, x_transferred)

- https://github.com/Netflix/lemur/security/advisories/GHSA-5fqv-mpj8-h7gm (ADP: CVE; vendor-advisory, x_transferred)

- https://vulncheck.com/advisories/netflix-lemur-weak-rng (ADP: CVE; third-party-advisory, x_transferred)

- https://github.com/advisories/GHSA-5fqv-mpj8-h7gm (OSV / GitHub Security Advisories; advisory)

- https://osv.dev/vulnerability/GHSA-5fqv-mpj8-h7gm (OSV / GitHub Security Advisories; osv)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2023-30797; retrieved 2026-11-08; source updated 2026-11-08

- OSV / GitHub Security Advisories: https://osv.dev/vulnerability/GHSA-5fqv-mpj8-h7gm; retrieved 2026-11-08; source updated 2026-07-08

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2023-30797; retrieved 2026-11-08; source updated Not reported

Revision: cfff49508badc2e9afb2f9c07101c983db25b0b318fd4ef75fd81cfb4d6f76ef

Canonical: https://y2.dev/cve/CVE-2023-30797

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