Is there a public exploit for CVE-2026-63198?

No public exploit for CVE-2026-63198 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-63198?

CVE-2026-63198 scores CVSS 7.3 (v3.1), rated high.

What does CVE-2026-63198 affect?

CVE-2026-63198 affects traPtitech traQ.

7.3 High

traQ is a messenger application built for Digital Creators Club traP.

CVE-2026-63198

traQ is a messenger application built for Digital Creators Club traP. Prior to 3.28.3, OAuth2 silent authorization requests using prompt=none with an empty or omitted scope parameter check prior consent against the empty requested scope set even though all scopes registered for the client become eligible for issuance. An attacker who controls an OAuth client capable of receiving authorization codes can target a user who previously consented to only some client scopes and obtain an access token containing broader registered scopes without additional consent. A user who has never consented to the client still receives consentrequired. This issue is fixed in version 3.28.3.

Assessment

CVSS: 7.3 (v3.1)
Severity: High
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 3 November 2026
Last updated: 3 November 2026
Affected: traPtitech · traQ
Assigner: GitHub_M

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

At the source

EUVD (ENISA)

References

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