Kirby up to API/Panel observable response discrepancy

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in Kirby up to It has been rated as problematic. Affected by this issue is an unknown code of the component API/Panel. The manipulation with an unknown input leads to a observable response discrepancy vulnerability. Using CWE to declare the problem leads to CWE-204. The product provides different responses to incoming requests in a way that reveals internal state information to an unauthorized actor outside of the intended control sphere. Impacted is confidentiality. CVE summarizes:

Kirby is a Content Management System. Prior to versions,,, and 3.8.1, a user enumeration vulnerability affects all Kirby sites with user accounts unless Kirby's API and Panel are disabled in the config. It can only be exploited for targeted attacks because the attack does not scale to brute force. The problem has been patched in Kirby, Kirby, Kirby, and Kirby 3.8.1. In all of the mentioned releases, the maintainers have rewritten the affected code so that the delay is also inserted after the brute force limit is reached.

The weakness was shared 10/25/2022 as GHSA-c27j-76xg-6x4f. The advisory is available at This vulnerability is handled as CVE-2022-39315 since 09/02/2022. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

Upgrading to version 3.8.1 eliminates this vulnerability. The upgrade is hosted for download at



CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔒

CNA Base Score: 6.5
CNA Vector (GitHub, Inc.): 🔒



VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍


Class: Observable response discrepancy
CWE: CWE-204 / CWE-203 / CWE-200
ATT&CK: T1592

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kirby 3.8.1


09/02/2022 CVE reserved
10/25/2022 +53 days Advisory disclosed
10/25/2022 +0 days VulDB entry created
11/23/2022 +29 days VulDB last update


Advisory: GHSA-c27j-76xg-6x4f
Status: Confirmed

CVE: CVE-2022-39315 (🔒)


Created: 10/25/2022 10:10 PM
Updated: 11/23/2022 09:33 PM
Changes: 10/25/2022 10:10 PM (51), 11/23/2022 09:33 PM (12)
Complete: 🔍


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