CVE-2026-92392 curl CVE debrief

Who should care

Defenders responsible for curl deployments, particularly those using versions 8.14.0 to 8.22.0, should assess exposure and apply patches. Operators of systems using affected versions of curl should review the vulnerability and take necessary actions to protect their systems. Security teams should prioritize verifying exposure and applying patches for affected versions. Vulnerability management teams should review the vulnerability and update their systems.

Why it matters

A use-after-free vulnerability in curl can lead to potential exploitation and compromise of curl-based systems and applications.

• Verify exposure and apply patches for curl versions 8.14.0 to 8.22.0
• Monitor for potential exploitation attempts
• Assess impact on curl-based systems and applications

Technical summary

The vulnerability occurs when curl receives an HTTP/2 RST_STREAM from the server during an upload, leading to a use-after-free of a struct Curl_easy object. This issue affects multiple versions of curl, from 8.14.0 to 8.22.0. The vulnerability can lead to potential exploitation and compromise of curl-based systems and applications. Defenders should prioritize verifying exposure and applying patches for affected versions. The CVE Program record and NVD vulnerability detail provide official information on the vulnerability.

Defensive priority

Defenders should prioritize verifying exposure and applying patches for curl versions 8.14.0 to 8.22.0.

Recommended defensive actions

• Verify curl version and assess exposure
• Apply patches for affected curl versions
• Monitor for potential exploitation attempts
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE Program record and NVD vulnerability detail provide official information on the vulnerability. Supplemental sources include curl.se and HackerOne. The vulnerability has been reported to affect multiple versions of curl, from 8.14.0 to 8.22.0. Defenders should verify exposure and apply patches for affected versions. The issue is a use-after-free vulnerability in curl when handling HTTP/2 RST_STREAM received from the server during an upload.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.