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CVE-2025-53532— giscus allows unauthorized discussion creation

Quick assessment

Affected
giscus giscus
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

giscus是giscus开源的一个评论系统。 giscus存在授权问题漏洞，该漏洞源于未经授权的用户可在安装giscus的仓库上创建讨论，可能导致未经授权的操作。

CVSS 5.3 · Medium EPSS 0.27% · P20

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-53532

Vulnerability Information
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Vulnerability Title
giscus allows unauthorized discussion creation
Source: CVE Program / CVE List V5
Vulnerability Description
giscus is a commenting system powered by GitHub Discussions. A bug in giscus' discussions creation API allowed an unauthorized user to create discussions on any repository where giscus is installed. This affects the server-side part of giscus, which is provided via http://giscus.app or your own self-hosted service. This vulnerability is fixed by the c43af7806e65adfcf4d0feeebef76dc36c95cb9a and 4b9745fe1a326ce08d69f8a388331bc993d19389 commits.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
giscus 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
giscus是giscus开源的一个评论系统。 giscus存在授权问题漏洞，该漏洞源于未经授权的用户可在安装giscus的仓库上创建讨论，可能导致未经授权的操作。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
giscus giscus < c43af7806e65adfcf4d0feeebef76dc36c95cb9a -

II. Public POCs for CVE-2025-53532

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III. Intelligence Information for CVE-2025-53532

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IV. Related Vulnerabilities

Same weakness: CWE-285

V. Comments for CVE-2025-53532

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