CVE-2024-56136 - /api/v1/jwt/fetch_api_key endpoint can leak if an email address has an account in Zulip server

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MEDIUM

/api/v1/jwt/fetch_api_key endpoint can leak if an email address has an account in Zulip server

Published Jan 16, 2025

6.9

MEDIUM

CVSS 4.0

EPSS 0.57%

Description

Zulip server provides an open-source team chat that helps teams stay productive and focused. Zulip Server 7.0 and above are vulnerable to an information disclose attack, where, if a Zulip server is hosting multiple organizations, an unauthenticated user can make a request and determine if an email address is in use by a user. Zulip Server 9.4 resolves the issue, as does the `main` branch of Zulip Server. Users are advised to upgrade. There are no known workarounds for this issue.

Affected products

Vendor Zulip Product Zulip Default
n/a
- Version
  >= 7.0, < 9.4
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Zulip

n/a

Version	Status	Constraints
>= 7.0, < 9.4	affected	-

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-200

Exposure of Sensitive Information

References (3)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2024-52989
Advisory
https://github.com/zulip/zulip/commit/c6334a765b1e6d71760e4a3b32ae5b8367f2ed4d
x_refsource_MISCPatch
https://github.com/zulip/zulip/security/advisories/GHSA-5xg8-xhfj-4hm6
x_refsource_CONFIRMThird Party Advisory

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2024-52989		Advisory
https://github.com/zulip/zulip/commit/c6334a765b1e6d71760e4a3b32ae5b8367f2ed4d		x_refsource_MISCPatch
https://github.com/zulip/zulip/security/advisories/GHSA-5xg8-xhfj-4hm6		x_refsource_CONFIRMThird Party Advisory