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CVE-2025-58146

XAPI UTF-8 string handling

Published: Jul 9, 2026Updated: Jul 9, 2026 Sources: CVE List NVDCWE-20

Description

There are multiple issues. 1. Updates to the XAPI database sanitise input strings, but try generating the notification using the unsanitised input. This causes the database's event thread to terminate and cease further processing. 2. XAPI's UTF-8 encoder implements v3.0 of the Unicode spec, but XAPI uses libraries which conform to the stricter v3.1 of the Unicode spec. This causes some strings to be accepted as valid UTF-8 by XAPI, but rejected by other libraries in use. Notably, such strings can be entered into the database, after which the database can no longer be loaded. 3. There is no input sanitisation for Map/Set updates on objects in the XAPI database.

No summary for this CVE yet.

Weaknesses

Affected Products

Xen
oss-project·GBaka xapi, qemu

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

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MITRE ATT&CK

1 technique
Initial Access
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References

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