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Description

Agent Zero before version 1.15 contains a stored cross-site scripting vulnerability that allows attackers to execute arbitrary JavaScript in the application origin by serving SVG files through the image_get API endpoint without Content-Security-Policy, X-Content-Type-Options, or Content-Disposition headers. Attackers can place a crafted SVG file containing script tags in any path readable by the agent-zero process and lure an authenticated user to the image_get endpoint, causing the browser to execute the malicious script, steal the csrf_token cookie, and perform unauthorized API calls on behalf of the victim.

PUBLISHED Reserved 2026-05-18 | Published 2026-05-27 | Updated 2026-05-27 | Assigner VulnCheck




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

MEDIUM: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Problem types

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Default status
affected

Any version before 1.15
affected

Credits

YU SUN finder

References

github.com/agent0ai/agent-zero/issues/1609 issue-tracking

github.com/...ommit/1f2d5122265282d6b98bc36ee8f9d0f8ab76db9e patch

www.vulncheck.com/...o-stored-xss-via-image-get-api-endpoint third-party-advisory

cve.org (CVE-2026-47119)

nvd.nist.gov (CVE-2026-47119)

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