---
id: CVE-2026-92392
title: |-
  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.
summary: |-
  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.
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-416
vendor: curl
product: curl
affected:
  - curl >= 8.22.0 <= 8.22.0
  - curl >= 8.21.0 <= 8.21.0
  - curl >= 8.20.0 <= 8.20.0
  - curl >= 8.19.0 <= 8.19.0
  - curl >= 8.18.0 <= 8.18.0
  - curl >= 8.17.0 <= 8.17.0
  - curl >= 8.16.0 <= 8.16.0
  - curl >= 8.15.0 <= 8.15.0
  - curl >= 8.14.1 <= 8.14.1
  - curl >= 8.14.0 <= 8.14.0
  - curl >= 8.13.0 <= 8.13.0
  - curl >= 8.12.1 <= 8.12.1
  - curl >= 8.12.0 <= 8.12.0
published: '2026-10-14'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T11:18:03.600'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92392'
references:
  - url: 'https://curl.se/docs/CVE-2026-92392.html'
    label: 2499f714-1537-4658-8207-48ae4bb9eae9
  - url: 'https://curl.se/docs/CVE-2026-92392.json'
    label: 2499f714-1537-4658-8207-48ae4bb9eae9
  - url: 'https://hackerone.com/reports/4030333'
    label: 2499f714-1537-4658-8207-48ae4bb9eae9
  - url: 'https://hackerone.com/reports/4030333'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92392.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-92392'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2548642'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-92392'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92392'
  - url: 'https://access.redhat.com/errata/RHSA-2026:80349'
  - url: 'https://access.redhat.com/errata/RHSA-2026:82895'
tags:
  - nvd
  - exploit-available
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.01284
epssPercentile: 0.69965
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/ashu7ank/CVE-2026-92392'
  checkedAt: '2026-10-27T19:22:38.994Z'
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-15T03:56:56.051034Z'
ingestedAt: '2026-10-14T08:23:04.345Z'
patched:
  - hardened_images
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **RHSA-2026:80349** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:80349)
- **RHSA-2026:82895** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-14 · [advisory](https://access.redhat.com/errata/RHSA-2026:82895)
- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92392.json)