CVE-2026-8053: RCE in MongoDB Server 8.3.2
Plattform
mongodb
Komponente
mongodb-server
Behoben in
8.3.2
CVE-2026-8053 is a critical vulnerability in MongoDB Server that allows authenticated users with database write privileges to trigger an out-of-bounds memory write. This can potentially lead to arbitrary code execution, granting attackers significant control over the affected system. The vulnerability stems from an inconsistency in the internal field-name-to-index mapping within the time-series bucket catalog. Affected versions include MongoDB Server v5.0 prior to 5.0.33, v6.0 prior to 6.0.28, v7.0 prior to 7.0.34, v8.0 prior to 8.0.23, v8.2 prior to 8.2.9, and v8.3 prior to 8.3.2. A fix is available in version 8.3.2.
Auswirkungen und Angriffsszenarien
An attacker exploiting CVE-2026-8053 could gain complete control of the MongoDB server. By crafting a malicious time-series collection query, an authenticated user with write privileges can trigger an out-of-bounds memory write. This memory corruption can then be leveraged to execute arbitrary code, potentially allowing the attacker to read sensitive data, modify database contents, or even compromise the entire system. The blast radius extends to any application or service relying on the vulnerable MongoDB instance. While the vulnerability requires authentication, the ease of obtaining database write privileges in many environments significantly increases the risk. This vulnerability shares similarities with other memory corruption exploits, highlighting the importance of robust input validation and memory safety practices.
Ausnutzungskontext
CVE-2026-8053 was published on 2026-05-12. Its severity is currently being evaluated. No public Proof-of-Concept (POC) exploits have been publicly disclosed as of this writing. The EPSS score is pending evaluation. Monitor security advisories from MongoDB and CISA for updates on exploitation activity and potential mitigation strategies.
Bedrohungsanalyse
Exploit-Status
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
- Hoch — Angreifer kann beliebige Daten schreiben, ändern oder löschen.
- Availability
- Hoch — vollständiger Absturz oder Ressourcenerschöpfung. Totaler Denial of Service.
Betroffene Software
Schwachstellen-Klassifikation (CWE)
Zeitleiste
- Veröffentlicht
- Geändert
Mitigation und Workarounds
The primary mitigation for CVE-2026-8053 is to upgrade MongoDB Server to version 8.3.2 or later. If an immediate upgrade is not possible, consider implementing temporary workarounds. Restricting access to the MongoDB database to only authorized users can limit the potential attack surface. Implementing strict input validation on all queries, particularly those interacting with time-series collections, can help prevent the triggering of the vulnerability. Consider using a Web Application Firewall (WAF) or proxy to filter malicious queries. Monitor MongoDB logs for suspicious activity related to time-series collections. After upgrading, confirm the fix by attempting to reproduce the vulnerability with a known exploit vector and verifying that it fails.
So behebenwird übersetzt…
Actualice su instancia de MongoDB Server a la versión 5.0.33 o superior, 6.0.28 o superior, 7.0.34 o superior, 8.0.23 o superior, 8.2.9 o superior o 8.3.2 o superior para mitigar la vulnerabilidad. La actualización corrige una inconsistencia en el mapeo de nombres de campos a índices dentro del catálogo de cubetas de series temporales, previniendo así la escritura fuera de límites de la memoria.
Häufig gestellte Fragen
What is CVE-2026-8053?
It's a high-severity vulnerability in MongoDB Server that allows authenticated users to potentially execute arbitrary code through a memory write issue in time-series collections.
Am I affected?
If you're running MongoDB Server versions 5.0.0–8.3.2, you are potentially affected. Check your version and upgrade immediately.
How do I fix it?
Upgrade to MongoDB Server version 8.3.2 or later. If immediate upgrade isn't possible, implement temporary mitigations like access restrictions and input validation.
Is it being exploited?
No public exploits are currently known, but the vulnerability's severity warrants immediate attention and mitigation.
Where can I learn more?
Refer to the MongoDB security advisory and the NVD entry for CVE-2026-8053 for detailed information and updates.
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