# CVE-2026-91786

## Summary

- **CVE ID:** CVE-2026-91786
- **Severity:** MEDIUM
- **CVSS Score:** 6.1 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H)
- **CWE:** CWE-125
- **Published:** Sep 15, 2026
- **Last Modified:** Sep 15, 2026

## Description

A flaw was found in GNOME Shell. When processing icons from a remote search provider via D-Bus, the system fails to validate the icon's declared dimensions against the actual data buffer size. A malicious or compromised remote search provider could exploit this by providing oversized icon dimensions, leading to an out-of-bounds read. This can cause the GNOME Shell process to crash, disrupting the user's session, and potentially disclose sensitive information from adjacent memory.

## Affected Products

No affected products listed.

## References

- [CNA](https://access.redhat.com/security/cve/CVE-2026-91786)
- [CNA](https://bugzilla.redhat.com/show_bug.cgi?id=2533606)
- [CNA](https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/9365)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.13%
- **EPSS Percentile:** 3.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-19._