CVE-2026-26058 Zulip: Path Traversal in Import
An attacker can read arbitrary server files by crafting a malicious export tarball during the import process in Zulip.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-26058?
CVE-2026-26058 is a medium-severity path traversal vulnerability in zulip, published on 3 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Zulip is an open-source team collaboration tool. From version 1.4.0 to before version 11.6, ./manage.py import reads arbitrary files from the server filesystem via path traversal in uploads/records.json. A crafted export tarball causes the server to copy any file the zulip user can read into the uploads directory during import. This issue has been patched in version 11.6.
Weakness: CWE-22
Which versions are affected by CVE-2026-26058?
It affects 1 product.
Products include Zulip Zulip.
How do I fix CVE-2026-26058?
No fix has been published for CVE-2026-26058 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-26058 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-26058 exists.
Other vulnerabilities in zulip
- CVE-2021-43799 RabbitMQ exposes ports with weak default secrets in Zulip Server
- CVE-2022-35962 Crafted link in Zulip message can cause disclosure of credentials
- CVE-2016-4427 Auth bypass in zulip
- CVE-2021-3866 Cross-site Scripting (XSS) - Stored in zulip/zulip
- CVE-2023-28623 Unauthorized user can register an account in specific configurations in Zulip
Sources
Also known as GHSA-xm5c-c6mp-3956.