Is there a public exploit for CVE-2026-115574?

No public exploit for CVE-2026-115574 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-115574?

CVE-2026-115574 scores CVSS 5.3 (v3.1), rated medium.

What does CVE-2026-115574 affect?

CVE-2026-115574 affects zulip zulip.

5.3 Medium

Zulip is an open-source team collaboration tool.

CVE-2026-115574

Zulip is an open-source team collaboration tool. From 11.0 until 12.2, organizations with web-public channels enabled exposed the GET /json/users endpoint to logged-out spectators, and a missing access-control check allowed includecustomprofilefields=true to return every user's custom profile field values in addition to the documented limited directory data. This exposed those custom profile field values to unauthenticated visitors. This issue is fixed in version 12.2.

Scanned for across the internet

Nuclei template

NucleiZulip Server 11.0 - 12.1 - Unauthenticated Custom Profile Field Disclosure

A Nuclei detection template exists for this, which means it is scanned for at internet scale rather than looked for deliberately.

Signals come from Exploit-DB, Metasploit, Nuclei and published proof-of-concept repositories. Their absence means nothing was found, not that nothing exists.

Assessment

CVSS: 5.3 (v3.1)
Severity: Medium
Known exploited: Not listed in CISA KEV
Exploit availability: Nuclei template
Published: 4 November 2026
Last updated: 5 November 2026
Affected: zulip · zulip
Assigner: GitHub_M

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

At the source

EUVD (ENISA)

References

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