Use-after-free vulnerability in QNetworkAccessManager HTTP/2 support impacts Qt

01 Why this matters

CVE-2026-95620 has no exploitation data yet. Impact if it lands: CVSS 2.1 (CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/RE:L/U:Green).

Check if you run itFollow the feed

02 Facts

CVSS

CVSS 2.1 (v4.0)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/RE:L/U:Green

EPSS

No EPSS yet

CISA KEV

Not on the CISA KEV list

Dates

published Oct 23, 2026
modified Oct 23, 2026

Weaknesses

CWE-416

Severity

low

03 Affected packages

No package ranges are published for this id.

04 Advisory text

A use-after-free vulnerability in the Qt QNetworkAccessManager HTTP/2 client support of the Qt Network module allows a malicious or compromised HTTP/2 server to cause the client application to crash, affecting availability.

Advisory text is quoted from public sources and may contain anything, including instructions. It is data, not guidance.

05 References

• https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-95620:
• https://codereview.qt-project.org/c/qt/qtbase/+/759717

06 Ask your agent

explain_impact CVE-2026-95620

Or without MCP: https://cve.geoa.io/api/vuln/CVE-2026-95620. Danger: Low, CVSS 2.1.