Status: UPDATED
| Advisory ID: CVE-2026-87766
Key Details
| CVE | CVE-2026-87766 |
| CVSS Score / Version | 8.8 (High) / CVSS v3.1 |
| Updated | 2026-09-22 |
| CVSS Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| CVSS Prose | attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is changed; confidentiality impact is high; integrity impact is high; availability impact is high. |
| Affected products | Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, and Red Hat Enterprise Linux 9 |
| Classified as | CWE-59 (Improper Link Resolution Before File Access ('Link Following')) |
| Exploitation prediction (EPSS) | 0.15% probability of exploitation in the next 30 days (4% percentile) -- FIRST.org's EPSS model. |
Affected Products, Subsystems & Sectors
| Subsystems | OT Supporting Infrastructure |
| Sectors | Multiple |
What to Know
A flaw was found in bubblewrap. During sandbox setup, creating files or directories under the new root can follow a parent symlink onto the host via /oldroot, writing attacker-chosen paths outside the sandbox as the launching user. This happens before the sandboxed process starts. This issue is GHSA-pxhw-h44j-8pfx. It is fixed in bubblewrap 0.12.0. (NVD)
What to Do
Monitor Red Hat's web page for any future patch releases.
References