CVE-2026-85662: Marqo 2.26.0 Server-Side Request Forgery via Media URLs

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-04 · updated 2026-09-23
Weakness: CWE-918

Description

Marqo 2.26.0 contains a server-side request forgery vulnerability in the add_documents endpoint that allows unauthenticated attackers to trigger requests to arbitrary URLs by supplying malicious media field values. Attackers can exploit download_image_from_url and fetch_content_sample functions which lack destination filtering and host validation to access internal services and cloud metadata endpoints.

Affected products

marqo-ai marqo: through 2.26.0

References

https://github.com/marqo-ai/marqo
https://github.com/marqo-ai/marqo/blob/2.26.0/components/inference_orchestrator/src/inference_orchestrator/services/media_download_and_preprocess/image_download.py
https://github.com/marqo-ai/marqo/issues/1452
https://www.vulncheck.com/advisories/marqo-2.26.0-server-side-request-forgery-via-media-urls

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