Detections
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SCA: security update for lemur (GHSA-x3vf-mgxj-7785)

medium Tenable Cloud Security Plugin ID 443946

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Lemur manages TLS certificate creation. Prior to 1.9.2, PUT /api/1/roles/ in lemur/roles/views.py:298
 authorized updates with RoleMemberPermission(role_id), which allowed either an administrator or any
 existing member of the target role. The handler passed data["users"] and data["name"] to service.update,
 allowing a non-admin member to add or remove other users and rename the role. This enabled lateral
 privilege grants within roles that control certificate and authority access and could deny access by
 removing legitimate members. The DELETE handler already required admin_permission, confirming that the
 weaker PUT authorization was inconsistent. The fix applies the same administrator-only requirement to the
 PUT handler. This issue is fixed in version 1.9.2. (CVE-2026-55163)

Solution

Update the lemur library and its related packages to version 1.9.2 or later.

See Also

https://github.com/advisories/GHSA-x3vf-mgxj-7785

Plugin Details

Severity: Medium

ID: 443946

Version: Revision 1.4

Type: Local

Family: SCA Checks

Published: 6/26/2026

Updated: 8/19/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.8

Percentile: 57.82

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 4.8

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS Score Source: CVE-2026-55163

CVSS v3

Risk Factor: Medium

Base Score: 6.3

Temporal Score: 5.5

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/25/2026

Vulnerability Publication Date: 6/25/2026

Reference Information

CVE: CVE-2026-55163

cwe: CWE-863