---
cve: "CVE-2026-58015"
severity: "MEDIUM"
cvss: 5.9
epss: "52%"
vendor: "Red Hat"
kev: false
exploited: false
published: "2026-06-30 13:19:17"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-03T03:54:27+02:00"
---

# CVE-2026-58015

> 5.9 MEDIUM

## Beschreibung

A flaw was found in GLib. The D-Bus client-side implementation of the DBUS_COOKIE_SHA1 SASL authentication mechanism does not validate the cookie_context parameter received from the server. A malicious D-Bus server can supply a cookie_context containing path traversal sequences, causing the client to read an arbitrary file and exfiltrate sensitive data by verifying guessed file contents against a generated hash.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Keine | good |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- d43ba363cb9a2c6a81da068293764ad65a99ea57 (Commit)
- d43ba363cb9a2c6a81da068293764ad65a99ea57 (Commit)

## Referenzen

- <https://access.redhat.com/errata/RHSA-2026:49512>
- <https://access.redhat.com/errata/RHSA-2026:55440>
- <https://access.redhat.com/errata/RHSA-2026:57015>
- <https://access.redhat.com/security/cve/CVE-2026-58015>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2492256>
- <https://gitlab.gnome.org/GNOME/glib/-/issues/3931>
- <https://access.redhat.com/errata/RHSA-2026:58981>
- <https://access.redhat.com/errata/RHSA-2026:61766>
- <https://access.redhat.com/errata/RHSA-2026:61783>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-58015) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_