Umami up to 3.4.1 Record API Endpoint route.ts website authorization

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k2.20+

Summaryinfo

A vulnerability identified as critical has been detected in Umami up to 3.4.1. The affected element is an unknown function of the file src/app/api/record/route.ts of the component Record API Endpoint. Performing a manipulation of the argument Website results in authorization. This vulnerability is known as CVE-2026-121582. Remote exploitation of the attack is possible. Furthermore, an exploit is available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability classified as critical has been found in Umami up to 3.4.1. This affects some unknown functionality of the file src/app/api/record/route.ts of the component Record API Endpoint. The manipulation of the argument website with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. This is going to have an impact on integrity, and availability.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-121582. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

The exploit is shared for download at github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Authorization
CWE: CWE-639 / CWE-285 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/03/2026 Advisory disclosed
11/03/2026 +0 days VulDB entry created
11/03/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Confirmed
Confirmation: 🔒

CNA: VulDB
CVE: CVE-2026-121582 (🔒)

GCVE (CVE): GCVE-0-2026-121582
GCVE (VulDB): GCVE-100-430425
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 11/03/2026 16:54
Changes: 11/03/2026 16:54 (57)
Complete: 🔍
Submitter: waterhunter
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #1019998: umami-software umami 3.4.0 Improper Access Control (by waterhunter)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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