CVE-2026-73155

Affected versions of cti-transmute allow authenticated users to add or remove emoji reactions on comments without first checking whether those users are authorized to view the target comment. The vulnerable react() handler passed an attacker-controlled comment_id directly to comments_repo.toggle_reaction() after only validating that the ID existed syntactically and that the requested emoji was permitted. Because comment-level visibility was not enforced, a user who could identify the ID of a private or otherwise inaccessible comment could modify reaction state on that comment despite lacking permission to access it. The fix retrieves the target comment, rejects missing or deleted comments, retrieves its associated conversion, and enforces access.can_see_comment(current_user, comment, conversion). Unauthorized requests now receive HTTP 403.

CVSS

No CVSS.

References

Link	Resource
https://github.com/MISP/cti-transmute/commit/a18c07c3dd4a74b91ad8dd23d6e84fee4bcbd457

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-11 08:17

Updated : 2026-08-26 16:49

NVD link : CVE-2026-73155

Mitre link : CVE-2026-73155

CVE.ORG link : CVE-2026-73155

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

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