CVE-2023-30797Network attack vector

Unauthorized resource access via predictable generated secrets

Published Apr 19, 2023 · Updated Jul 15, 2026

Insufficient randomness in Netflix Lemur before 1.3.2 allows remote attackers to guess generated secrets and access managed resources. The get_random_secret and get_psuedo_random_string utilities, plus the example configuration, select characters with Python random.choice rather than a cryptographic generator. Exploitation requires a deployment to retain or use an affected session, token, encryption, keystore, OAuth, certificate-challenge, or user-password value.

CVSS severity7.5
High
EPSS probability0.79%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient randomness in Netflix Lemur before 1.3.2 allows remote attackers to guess generated secrets and access managed resources. The get_random_secret and get_psuedo_random_string utilities, plus the example configuration, select characters with Python random.choice rather than a cryptographic generator. Exploitation requires a deployment to retain or use an affected session, token, encryption, keystore, OAuth, certificate-challenge, or user-password value.

The record

CVE
CVE-2023-30797
Published
Apr 19, 2023
Updated
Jul 15, 2026
Vendor
Netflix
Product
Lemur
Classifications
CWE-330, CAPEC-112, T1110
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 19, 2023CVE publishedPublication date reported by the CVE source.
  2. Jul 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.3.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Netflix · Lemurversion=0 <1.3.2

Published CVSS scores

7.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-330Use of Insufficiently Random Values
CAPEC-112Brute Force
T1110Brute Force

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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