Detections
Analytics

SCA: security update for lemur (GHSA-qcqw-jwxc-2hqg)

high Tenable Cloud Security Plugin ID 443938

Description

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

 - Lemur manages TLS certificate creation. Prior to 1.9.1, StrictRolePermission and
 AuthorityCreatorPermission in lemur/auth/permissions.py call flask_principal.Permission.__init__() with
 zero Need objects when ADMIN_ONLY_AUTHORITY_CREATION and LEMUR_STRICT_ROLE_ENFORCEMENT are unset because
 both flags default to False. Flask-Principal Permission.allows() returns True when self.needs is empty, so
 the .can() authorization gate permits every authenticated identity, including the read-only role. A read-
 only user can access POST /api/1/authorities, POST /api/1/certificates/upload, POST
 /api/1/pending_certificates//upload, POST /api/1/notifications, PUT or DELETE /api/1/notifications/, and
 POST /api/1/domains to create root Certificate Authorities, upload arbitrary certificates, create or edit
 notifications that reach an SSRF sink, and create domain entries. Explicitly setting either flag to False
 continues to opt into the permissive behavior. This issue is fixed in version 1.9.1. (CVE-2026-48508)

Solution

Update the lemur library and its related packages to version 1.9.1 or later.

See Also

https://github.com/advisories/GHSA-qcqw-jwxc-2hqg

Plugin Details

Severity: High

ID: 443938

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: 4.9

Percentile: 58

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2026-48508

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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-2026-48508

cwe: CWE-863