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High

Lemur uses static IV per key

  • Disclosed: 09.08.2017
  • Updated: 11.10.2026 15:17

Lemur 0.1.4 does not use sufficient entropy in its IV when encrypting AES in CBC mode.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) lemur < 0.1.5 0.1.5

References

CVSS score 7.5/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE)
CWE-331
Platform
Python (PyPI)
Package
lemur
Disclosed
09.08.2017
Updated
11.10.2026 15:17

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2017-50 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-chg9-3c3p-ch23 - CC BY 4.0

Vulnerability history: lemur

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (18) in the archive
Total entries
18
First → latest
08.2017 08.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 1
  • High 9
  • Medium 8

Disclosures per year

Severity:
  1. Lemur: Any user can revoke arbitrary certificates at the CA by uploading a duplicate record and revoking it
    High · 7.3 CVE-2026-71417 < 1.9.3 1.9.3
  2. Lemur: Unchecked `replaces[]` lets any user silence notifications and hijack auto-rotation for arbitrary certificates
    High · 8.1 CVE-2026-71308 >= 0.5.0, < 1.9.3 1.9.3
  3. Lemur: Authenticated low-privilege users can read plaintext destination credentials (SFTP password / private-key passphrase) via the destinations API
    High · 7.7 CVE-2026-71307 < 1.9.3 1.9.3
  4. Lemur: Incomplete fix for GHSA-v2wp-frmc-5q3v -- ACME authority update endpoint allows non-admin to replace `acme_url` with internal IP, bypassing allowlist
    High · 7.7 CVE-2026-71303 < 1.9.3 1.9.3
  5. Lemur: Server-Side Request Forgery via the ACME client following server-controlled URLs
    High · 7.4 CVE-2026-70666 < 1.9.3 1.9.3
  6. Lemur: ACME SSRF + creator-equality IDOR lead to AWS IAM/PKI compromise
    Critical · 9.9 CVE-2026-55166 < 1.9.2 1.9.2
  7. Lemur has an authorization bypass in StrictRolePermission / AuthorityCreatorPermission
    High · 8.8 CVE-2026-48508 < 1.9.1 1.9.1
  8. Lemur: LDAP Filter Injection enables post-authentication privilege escalation
    High · 8.1 CVE-2026-44304 < 1.9.0 1.9.0
  9. Lemur subject to insecure random generation
    High · 7.5 CVE-2023-30797 < 1.3.2 1.3.2
  10. Lemur uses static IV per key this entry
    High · 7.5 CVE-2015-7764 < 0.1.5 0.1.5

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