Discourse up to stable 3.3.1 Setting DISCOURSE_DISABLE_ANON_CACHE origin validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability has been found in Discourse up to stable 3.3.1 and classified as critical. Affected is an unknown function of the component Setting Handler. The manipulation of the argument DISCOURSE_DISABLE_ANON_CACHE leads to origin validation. This vulnerability is traded as CVE-2025-23023. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Discourse up to stable 3.3.1. This issue affects an unknown part of the component Setting Handler. The manipulation of the argument DISCOURSE_DISABLE_ANON_CACHE with an unknown input leads to a origin validation vulnerability. Using CWE to declare the problem leads to CWE-346. The product does not properly verify that the source of data or communication is valid. Impacted is integrity, and availability. The summary by CVE is:

Discourse is an open source platform for community discussion. In affected versions an attacker can carefully craft a request with the right request headers to poison the anonymous cache (for example, the cache may have a response with missing preloaded data). This issue only affects anonymous visitors of the site. This problem has been patched in the latest version of Discourse. Users are advised to upgrade. Users unable to upgrade may disable anonymous cache by setting the `DISCOURSE_DISABLE_ANON_CACHE` environment variable to a non-empty value.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2025-23023 since 01/10/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

Upgrading eliminates this vulnerability.

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Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.2

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

CNA Base Score: 8.2
CNA Vector (GitHub_M): 🔍

CVSSv2info

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

Exploitinginfo

Class: Origin validation
CWE: CWE-346 / CWE-345
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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: 🔍

Timelineinfo

01/10/2025 🔍
02/05/2025 +26 days 🔍
02/05/2025 +0 days 🔍
02/05/2025 +0 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-5h4h-2f46-r3c7
Status: Confirmed

CVE: CVE-2025-23023 (🔍)
GCVE (CVE): GCVE-0-2025-23023
GCVE (VulDB): GCVE-100-294689

Entryinfo

Created: 02/05/2025 06:40
Changes: 02/05/2025 06:40 (64)
Complete: 🔍
Cache ID: 216::103

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Discussion

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