discourse-calendar up to 0.4 Content Security Policy cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in discourse-calendar up to 0.4. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component Content Security Policy Handler. The manipulation results in cross site scripting. This vulnerability is reported as CVE-2024-45303. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in discourse-calendar up to 0.4. It has been classified as problematic. Affected is some unknown processing of the component Content Security Policy Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

Discourse Calendar plugin adds the ability to create a dynamic calendar in the first post of a topic to Discourse. Rendering event names can be susceptible to XSS attacks. This vulnerability only affects sites which have modified or disabled Discourse’s default Content Security Policy. The issue is patched in version 0.5 of the Discourse Calendar plugin.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2024-45303 since 08/26/2024. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 0.5 eliminates this vulnerability. Applying the patch 81e1c8e3c4c02276fb890da7e3f684259aeb685c is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 6.1
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: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
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: 🔍

Upgrade: discourse-calendar 0.5
Patch: 81e1c8e3c4c02276fb890da7e3f684259aeb685c

Timelineinfo

08/26/2024 🔍
09/12/2024 +17 days 🔍
09/12/2024 +0 days 🔍
03/10/2025 +179 days 🔍

Sourcesinfo

Advisory: GHSA-rq37-8pf3-4xc8
Status: Confirmed

CVE: CVE-2024-45303 (🔍)
GCVE (CVE): GCVE-0-2024-45303
GCVE (VulDB): GCVE-100-277332

Entryinfo

Created: 09/12/2024 21:33
Updated: 03/10/2025 12:50
Changes: 09/12/2024 21:33 (67), 03/10/2025 12:50 (3)
Complete: 🔍
Cache ID: 216::103

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