---
title: "CVE-2026-92392: curl - Use After Free"
description: "curl contains a use after free vulnerability caused by mishandling HTTP/2 RST_STREAM frames with reason HTTP_1_1_REQUIRED or REFUSED_STREAM during upload, letting remote attackers cause memory corruption, exploit requires crafted server response."
url: https://panop.io/threat-heartbeat/CVE-2026-92392/
---

# CVE-2026-92392 curl - Use After Free

curl contains a use after free vulnerability caused by mishandling HTTP/2 RST\_STREAM frames with reason HTTP\_1\_1\_REQUIRED or REFUSED\_STREAM during upload, letting remote attackers cause memory corruption, exploit requires crafted server response.

CVSS base score 8.1 /10

High

CISA KEV

Not listed

Public exploit

Proof of concept available

Authentication

Not required

EPSS

0.23% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-92392)

## Details

Type

Use After Free

Impact

Denial Of Service, Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Published

14 October 2026

Updated

15 October 2026

Weakness

[CWE-416](https://cwe.mitre.org/data/definitions/416.html)

## Vendor fix

Update to the latest curl version with the fix applied.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-92392](https://nvd.nist.gov/vuln/detail/CVE-2026-92392)
- [https://curl.se/docs/CVE-2026-92392.html](https://curl.se/docs/CVE-2026-92392.html)
- [https://curl.se/docs/CVE-2026-92392.json](https://curl.se/docs/CVE-2026-92392.json)
- [https://hackerone.com/reports/4030333](https://hackerone.com/reports/4030333)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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