PT-2025-7053 · Zulip · Zulip

Alexmv · Published 2025-02-13 · Updated 2025-02-14 · CVE-2025-25195

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions: Zulip (affected versions not specified)

Description: A weekly cron job in Zulip demotes channels to being "inactive" after they have not received traffic for 180 days. However, upon doing so, an event was sent to all users in the organization, not just users in the channel, containing the name of the private channel. Similarly, the same commit added functionality to notify clients when channels stopped being "inactive," which also leaked an event to all users in the organization with the name of the private channel. The estimated number of potentially affected devices worldwide is not available. There is no information about real-world incidents where this issue was exploited.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2025-25195

GHSA-X8CX-3HQ5-4WJ9

Affected Products

Zulip

References · 9

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/25xxx/CVE-2025-25195.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-25195 · Security Note
• https://osv.dev/vulnerability/CVE-2025-25195 · Vendor Advisory
• https://github.com/zulip/zulip/commit/50256f48314250978f521ef439cafa704e056539 · Note
• https://github.com/zulip/zulip/commit/75be449d456d29fef27e9d1828bafa30174284b4 · Note
• https://github.com/zulip/zulip/commit/a2a1a7f8d152296c8966f1380872c0ac69e5c87e · Note
• https://github.com/zulip/zulip/security/advisories/GHSA-x8cx-3hq5-4wj9 · Note
• https://twitter.com/CVEnew/status/1890162444926116128 · Twitter Post
• https://t.me/cvedetector/18064 · Telegram Post