CVE-2025-52559: Zulip is an open-source team chat application. From versions 2.0.0-rc1 to before 10.4 in Zulip Server, the /digest/ URL of a server shows a preview of what the…

PriorityP425medium5.4CVSS 3.1

AVNACLPRLUIRSCCLILAN

EPSS

0.23%

14.0th percentile

Zulip is an open-source team chat application. From versions 2.0.0-rc1 to before 10.4 in Zulip Server, the /digest/ URL of a server shows a preview of what the email weekly digest would contain. This URL, though not the digest itself, contains a cross-site scripting (XSS) vulnerability in both topic names and channel names. This issue has been fixed in Zulip Server 10.4. A workaround for this issue involves denying access to /digest/.

Affected

8 ranges

Vendor	Product	Version range	Fixed in
msrc	azl3_kernel_6.6.82.1-1_on_azure_linux_3.0	—	—
msrc	azl3_kernel_6.6.92.2-1_on_azure_linux_3.0	—	—
msrc	cbl2_kernel_5.15.186.1-1_on_cbl_mariner_2.0	—	—
msrc	cbl2_kernel_5.15.200.1-1_on_cbl_mariner_2.0	—	—
msrc	cbl2_kernel_5.15.202.1-1_on_cbl_mariner_2.0	—	—
zulip	zulip	—	—
zulip	zulip_server	—	—
zulip	zulip_server	>= 2.0.1 < 10.4	10.4

CVSS provenance

nvdv3.15.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

vendor_msrc5.5MEDIUM

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