CVE-2026-4782: Arbitrary File Access in Avada Builder
Plattform
wordpress
Komponente
fusion-builder
Behoben in
3.15.3
CVE-2026-4782 describes an Arbitrary File Access vulnerability affecting the Avada (Fusion) Builder plugin for WordPress. This vulnerability allows authenticated attackers, even those with Subscriber-level access, to read arbitrary files on the server. The issue impacts versions of Avada Builder up to and including 3.15.2, with a partial fix introduced in 3.15.2 and a full resolution in version 3.15.3.
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Auswirkungen und Angriffsszenarien
An attacker exploiting CVE-2026-4782 can leverage the 'fusiongetsvgfromfile' function within the 'fusionsectionseparator' shortcode to read arbitrary files. This means they could potentially access sensitive configuration files, database credentials, or even source code stored on the server. The impact is amplified if the server stores sensitive data in plain text. While the vulnerability requires authenticated access (Subscriber level or higher), the ease of obtaining such access on many WordPress sites significantly broadens the attack surface. This vulnerability shares similarities with other file access vulnerabilities, where attackers can gain unauthorized access to system resources.
Ausnutzungskontext
CVE-2026-4782 was published on 2026-05-12. Its severity is currently assessed as Medium (CVSS 6.5). No public Proof-of-Concept (POC) exploits have been identified at the time of writing, but the ease of exploitation makes it a potential target. It is not currently listed on KEV or EPSS, indicating a low to medium probability of active exploitation. Refer to the official Avada plugin advisory for further details.
Bedrohungsanalyse
Exploit-Status
CISA SSVC
CVSS-Vektor
Was bedeuten diese Metriken?
- Attack Vector
- Netzwerk — aus der Ferne über das Internet ausnutzbar. Kein physischer oder lokaler Zugriff erforderlich.
- Attack Complexity
- Niedrig — keine besonderen Bedingungen erforderlich. Zuverlässig ausnutzbar.
- Privileges Required
- Niedrig — jedes gültige Benutzerkonto ist ausreichend.
- User Interaction
- Keine — automatischer und lautloser Angriff. Das Opfer tut nichts.
- Scope
- Unverändert — Auswirkung auf das anfällige Komponente beschränkt.
- Confidentiality
- Hoch — vollständiger Vertraulichkeitsverlust. Angreifer kann alle Daten lesen.
- Integrity
- Keine — kein Integritätseinfluss.
- Availability
- Keine — kein Verfügbarkeitseinfluss.
Betroffene Software
Schwachstellen-Klassifikation (CWE)
Zeitleiste
- Reserviert
- Veröffentlicht
- Geändert
Mitigation und Workarounds
The primary mitigation for CVE-2026-4782 is to upgrade the Avada (Fusion) Builder plugin to version 3.15.3 or later. If immediate upgrading is not possible due to compatibility issues or testing requirements, consider implementing a temporary workaround by restricting access to the 'fusiongetsvgfromfile' function. This could involve modifying the plugin's code (not recommended unless you have development expertise) or using a WordPress security plugin with file access control capabilities. Web Application Firewalls (WAFs) can be configured to block requests targeting the vulnerable endpoint. After upgrading, verify the fix by attempting to access a non-existent file through the 'fusionsectionseparator' shortcode; the request should be denied.
So beheben
Aktualisieren Sie auf Version 3.15.3 oder eine neuere gepatchte Version
Häufig gestellte Fragen
What is CVE-2026-4782 — Arbitrary File Access in Avada Builder?
CVE-2026-4782 is a vulnerability in the Avada (Fusion) Builder plugin for WordPress that allows authenticated attackers to read arbitrary files on the server. It affects versions up to 3.15.2 and is rated as Medium severity.
Am I affected by CVE-2026-4782 in Avada Builder?
You are affected if you are using Avada (Fusion) Builder version 3.15.2 or earlier. Upgrade to version 3.15.3 or later to mitigate the risk.
How do I fix CVE-2026-4782 in Avada Builder?
The recommended fix is to upgrade the Avada (Fusion) Builder plugin to version 3.15.3 or later. If upgrading is not immediately possible, consider temporary workarounds like restricting access to the vulnerable function.
Is CVE-2026-4782 being actively exploited?
While no public exploits have been identified, the ease of exploitation suggests a potential risk. Monitor your systems and apply the patch as soon as possible.
Where can I find the official Avada advisory for CVE-2026-4782?
Refer to the official Avada plugin website and WordPress plugin repository for the latest advisory and update information regarding CVE-2026-4782.
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