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Vulnerabilities

Vulnerability · CVE-2025-53532

giscus is a commenting system powered by GitHub Discussions.

Published Jul 7, 2025 · catalog updated Jul 7, 2025 · giscus is a commenting

Last checked Nov 4, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-53532. EPSS is 0.31%. Act only if a listed version of giscus is a commenting is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (giscus is a commenting).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.31%
Remediation
Version ranges on file
Affected products
vendor giscus giscus < c43af7806e65adfcf4d0feeebef76dc36c95cb9a

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor giscus giscus < c43af7806e65adfcf4d0feeebef76dc36c95cb9a< c43af7806e65adfcf4d0feeebef76dc36c95cb9a

How to fix CVE-2025-53532

  • Upgrade

    CVE-2025-53532 lists a fix boundary at c43af7806e65adfcf4d0feeebef76dc36c95cb9a. Compare the installed build with that boundary before you change production.

  • Version check

    Seen in < c43af7806e65adfcf4d0feeebef76dc36c95cb9a

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-53532. EPSS is 0.31%. Act only if a listed version of giscus is a commenting is installed.

Which versions are affected?

Compare what you have installed with giscus giscus < c43af7806e65adfcf4d0feeebef76dc36c95cb9a < c43af7806e65adfcf4d0feeebef76dc36c95cb9a. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.31%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 7, 2025 · EUVD

    Detected

    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 4b9

  2. Jul 7, 2025 · EUVD

    Updated

    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 4b9

Sources

  • CVE.orgVulnerability recordCVE-2025-53532

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-53532

    30-day exploitation probability 0.31%

    first.org
  • EUVDVulnerability recordEUVD-2025-20284

    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.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 4, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 23, 2026
  • CVE.orgOct 21, 2026
  • EUVDOct 20, 2026