CVE-2026-92392

HTTP/2 upload Use-After-Free

CVE-2026-92392 is fixed in 12 products on 1 platform, first by DEBIAN-CVE-2026-92392, released October 16, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

8.1

Important

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0128

70th percentile

During an upload, curl mishandles HTTP/2 `RST_STREAM` received from the server (with reason `HTTP_1_1_REQUIRED` or `REFUSED_STREAM`) leading to a use after free of a `struct Curl_easy` object.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
curl · Debian 13.5 (trixie)	8.14.1-2+deb13u7	DEBIAN-CVE-2026-92392	Oct 16, 2026
curl · Ubuntu 26.04.1 LTS (resolute)	8.18.0-1ubuntu2.8	curl 8.18.0-1ubuntu2.8	Nov 7, 2026
curl · amzn 2023	8.21.0-5.amzn2023.0.3	ALAS2023-2026-3267	Nov 7, 2026
curl · sles 15.6	8.22.0-150600.4.58.1	SUSE-SU-2026:5069-1	Nov 7, 2026
curl · sles 15.7	8.22.0-150700.7.33.1	SUSE-SU-2026:5068-1	Nov 7, 2026
curl-debuginfo · amzn 2023	8.21.0-5.amzn2023.0.3	ALAS2023-2026-3267	Nov 7, 2026
curl-debugsource · amzn 2023	8.21.0-5.amzn2023.0.3	ALAS2023-2026-3267	Nov 7, 2026
curl-minimal · amzn 2023	8.21.0-5.amzn2023.0.3	ALAS2023-2026-3267	Nov 7, 2026
curl-minimal-debuginfo · amzn 2023	8.21.0-5.amzn2023.0.3	ALAS2023-2026-3267	Nov 7, 2026
libcurl · amzn 2023	8.21.0-5.amzn2023.0.3	ALAS2023-2026-3267	Nov 7, 2026
libcurl-debuginfo · amzn 2023	8.21.0-5.amzn2023.0.3	ALAS2023-2026-3267	Nov 7, 2026
libcurl-devel · amzn 2023	8.21.0-5.amzn2023.0.3	ALAS2023-2026-3267	Nov 7, 2026
libcurl-minimal · amzn 2023	8.21.0-5.amzn2023.0.3	ALAS2023-2026-3267	Nov 7, 2026
libcurl-minimal-debuginfo · amzn 2023	8.21.0-5.amzn2023.0.3	ALAS2023-2026-3267	Nov 7, 2026
libcurl3t64-gnutls · Ubuntu 26.04.1 LTS (resolute)	8.18.0-1ubuntu2.8	libcurl3t64-gnutls 8.18.0-1ubuntu2.8	Nov 7, 2026
libcurl4t64 · Ubuntu 26.04.1 LTS (resolute)	8.18.0-1ubuntu2.8	libcurl4t64 8.18.0-1ubuntu2.8	Nov 7, 2026

Details

Published
October 13, 2026
Weakness
Use After Free
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-92392

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