CVE-2026-33611
Received Received - Intake

REST API Injection Causes LMDB Corruption in Authoritative Server

Publication date: 2026-04-22

Last updated on: 2026-04-22

Assigner: Open-Xchange

Description
An operator allowed to use the REST API can cause the Authoritative server to produce invalid HTTPS or SVCB record data, which can in turn cause LMDB database corruption, if using the LMDB backend.

CVSS Scores

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Meta Information

Published
2026-04-22
Last Modified
2026-04-22
Generated
2026-07-06
AI Q&A
2026-04-22
EPSS Evaluated
2026-07-05
NVD
CVE-2026-33611
EUVD
EUVD-2026-24951

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-190 The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Attack-Flow Graph

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Impact Analysis

The impact of this vulnerability includes potential corruption of the LMDB database used by the Authoritative server.

This can result in denial of service or disruption of services relying on the integrity of the database.

The CVSS score indicates a high impact on integrity and availability, meaning attackers with high privileges can cause significant damage.

Executive Summary

This vulnerability occurs when an operator with permission to use the REST API causes the Authoritative server to generate invalid HTTPS or SVCB record data.

If the server uses the LMDB backend, this invalid data can lead to corruption of the LMDB database.

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