Zulip is an open-source team collaboration tool with topic-based threading that combines email and chat. When displaying messages with embedded remote images, Zulip normally loads the image preview via a go-camo proxy server. However, an attacker who can send messages could include a crafted URL that tricks the server into embedding a remote image reference directly. This could allow the attacker to infer the viewer’s IP address and browser fingerprinting information. This vulnerability is fixed in Zulip Server 5.6. Zulip organizations with image and link previews [disabled](https://zulip.com/help/allow-image-link-previews) are not affected.
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Wed, 23 Apr 2025 18:15:00 +0000
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2022-08-31T19:15:11.000Z
Updated: 2025-04-23T17:46:52.591Z
Reserved: 2022-07-15T00:00:00.000Z
Link: CVE-2022-36048

Updated: 2024-08-03T09:52:00.508Z

Status : Modified
Published: 2022-08-31T20:15:08.813
Modified: 2024-11-21T07:12:15.960
Link: CVE-2022-36048

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