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THREAT OPS › Threat News › [NVD] CVE-2025-5991 — There is a "Use After Free" vulnerability in Qt's QHttp2ProtocolHandler in the QtNetwork module. This only affects HTTP/2 handling, HTTP handling is not affected by this at all. This happens due to a race condition between how QHttp2Stream uploads the body of a POST request and

[NVD] CVE-2025-5991 — There is a "Use After Free" vulnerability in Qt's QHttp2ProtocolHandler in the QtNetwork module. This only affects HTTP/2 handling, HTTP handling is not affected by this at all. This happens due to a race condition between how QHttp2Stream uploads the body of a POST request and

lownvdPublished 2025-06-11

CVE-2025-5991 CVSS: None Published: 2025-06-11T08:15:22.933

There is a "Use After Free" vulnerability in Qt's QHttp2ProtocolHandler in the QtNetwork module. This only affects HTTP/2 handling, HTTP handling is not affected by this at all. This happens due to a race condition between how QHttp2Stream uploads the body of a POST request and the simultaneous handling of HTTP error responses.

This

Indicators of compromise

CVE-2025-5991cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2025-5991