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Description

The '/api/v1/files/images/{flow_id}/{file_name}' endpoint serves SVG files with the 'image/svg+xml' content type without sanitizing their content. Since SVG files can contain embedded JavaScript, an attacker can upload a malicious SVG that executes arbitrary JavaScript when viewed by other users, leading to stored cross-site scripting (XSS). This allows stealing authentication tokens stored in cookies, including JWT access and refresh tokens.

PUBLISHED Reserved 2026-03-27 | Published 2026-03-27 | Updated 2026-03-27 | Assigner tenable




HIGH: 7.0CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')

Product status

Default status
unaffected

Any version
affected

References

www.tenable.com/security/research/tra-2026-25

cve.org (CVE-2026-5026)

nvd.nist.gov (CVE-2026-5026)

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