Drupal OAuth2 Server up to 2.0.x authorization

CVSS Meta Temp Score
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CTI Interest Score
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3.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Drupal OAuth2 Server up to 2.0.x. The impacted element is an unknown function. Performing a manipulation results in authorization. This vulnerability is identified as CVE-2025-31691. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Drupal OAuth2 Server up to 2.0.x. This affects an unknown functionality. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality. The summary by CVE is:

Missing Authorization vulnerability in Drupal OAuth2 Server allows Forceful Browsing.This issue affects OAuth2 Server: from 0.0.0 before 2.1.0.

The weakness was released by Pierre Rudloff as sa-contrib-2025-020. It is possible to read the advisory at drupal.org. This vulnerability is uniquely identified as CVE-2025-31691 since 03/31/2025. The exploitability is told to be easy. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 2.1.0 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
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-862 / CWE-863 / CWE-285
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: OAuth2 Server 2.1.0

Timelineinfo

03/31/2025 🔍
04/01/2025 +1 days 🔍
04/01/2025 +0 days 🔍
09/02/2025 +154 days 🔍

Sourcesinfo

Vendor: drupal.org

Advisory: sa-contrib-2025-020
Researcher: Pierre Rudloff
Status: Confirmed

CVE: CVE-2025-31691 (🔍)
GCVE (CVE): GCVE-0-2025-31691
GCVE (VulDB): GCVE-100-302331

Entryinfo

Created: 04/01/2025 07:59
Updated: 09/02/2025 22:16
Changes: 04/01/2025 07:59 (55), 04/01/2025 08:00 (1), 09/02/2025 22:16 (1)
Complete: 🔍
Cache ID: 216::103

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