CVE-2026-92392Network attack vectorHinoki check available

Code execution via stale HTTP/2 upload handle

Published Oct 14, 2026 · Updated Oct 14, 2026

Use-after-free in The Curl Project curl 8.22.0 HTTP/2 uploads allows remote attackers to execute code via crafted server responses. Stream-reset handling leaves a dangling Curl_easy pointer that multi-handle cleanup uses after freeing, allowing received data to overwrite a function pointer. Exploitation requires an upload to a malicious server with a valid certificate and precise allocation conditions; crashes are the more likely outcome.

CVSS severityUnavailable
Unscored
EPSS probability0.66%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Use-after-free in The Curl Project curl 8.22.0 HTTP/2 uploads allows remote attackers to execute code via crafted server responses. Stream-reset handling leaves a dangling Curl_easy pointer that multi-handle cleanup uses after freeing, allowing received data to overwrite a function pointer. Exploitation requires an upload to a malicious server with a valid certificate and precise allocation conditions; crashes are the more likely outcome.

The record

CVE
CVE-2026-92392
Published
Oct 14, 2026
Updated
Oct 14, 2026
Vendor
The Curl Project
Product
curl
Classifications
T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.12.0 <=8.12.0
  2. Affected versionversion=8.12.1 <=8.12.1
  3. Affected versionversion=8.13.0 <=8.13.0
  4. Affected versionversion=8.14.0 <=8.14.0
  5. Affected versionversion=8.14.1 <=8.14.1
  6. Affected versionversion=8.15.0 <=8.15.0
  7. Affected versionversion=8.16.0 <=8.16.0
  8. Affected versionversion=8.17.0 <=8.17.0
  9. Affected versionversion=8.18.0 <=8.18.0
  10. Affected versionversion=8.19.0 <=8.19.0
  11. Affected versionversion=8.20.0 <=8.20.0
  12. Affected versionversion=8.21.0 <=8.21.0
  13. Affected versionversion=8.22.0 <=8.22.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Curl Project · curlversion=8.12.0 <=8.12.0; version=8.12.1 <=8.12.1; version=8.13.0 <=8.13.0; version=8.14.0 <=8.14.0; version=8.14.1 <=8.14.1; version=8.15.0 <=8.15.0; version=8.16.0 <=8.16.0; version=8.17.0 <=8.17.0; version=8.18.0 <=8.18.0; version=8.19.0 <=8.19.0; version=8.20.0 <=8.20.0; version=8.21.0 <=8.21.0; version=8.22.0 <=8.22.0

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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