CVE-2026-63197

high

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

traQ is a messenger application built for Digital Creators Club traP. Prior to 3.28.3, instances configured with TRAQ_STORAGE_TYPE=local can return user-uploaded SVG or HTML content from the /files/{fileId} retrieval endpoint for direct browser rendering. An attacker with file-upload capability can provide crafted active content and induce another user to open its file URL, causing attacker-controlled JavaScript to execute in the victim's browser. This issue is fixed in version 3.28.3.

CVSS

7.3

7.3 (CVSS v3.1)

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

Severity source: NVD CVSS v3.1 (security-advisories@github.com)

Timeline (UTC)

Published: 2026-11-03 19:18

Modified: 2026-11-03 23:17

NVD status: Received

Last synced 1 day ago

Verified against the source API 2026-11-03 23:24 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

Not reported by the source (unknown — not "none").

Weakness classification (CWE)

CWE-79

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

No vendor advisory or patch reference tagged by NVD. Check the references below.

References

https://github.com/traPtitech/traQ/commit/3db29e7771661f6418d88d186d8ff7817f5d6b6e security-advisories@github.com
https://github.com/traPtitech/traQ/releases/tag/v3.28.3 security-advisories@github.com
https://github.com/traPtitech/traQ/security/advisories/GHSA-p74g-f95m-7fx7 security-advisories@github.com

Data sources

NVD CVE API 2.0 — fetched 2026-11-03 23:24 UTC · record ↗

Learn the basics

Understanding CVEs and CVSS Scores