CVE-2026-9080 — HIGH (7.3) — White Hats Nepal

Q: How severe is CVE-2026-9080?

CVE-2026-9080 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-9080?

Check the references section above for vendor advisories and patch information. Affected products include: Haxx Curl.

Vulnerability Description

Calling `curl_easy_pause()` within the event-based `CURLMOPT_SOCKETFUNCTION` callback triggers a use-after-free vulnerability, where libcurl attempts to store a flag using a dangling struct pointer immediately after that pointer's memory has been freed.

CVSS Score

7.3

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

LOW

Affected Products

Vendor	Product	Versions
Haxx	Curl	>= 8.13.0, < 8.21.0

Related Weaknesses (CWE)

CWE-416

References

https://curl.se/docs/CVE-2026-9080.htmlPatchVendor Advisory
https://curl.se/docs/CVE-2026-9080.jsonVendor Advisory
https://hackerone.com/reports/3749204ExploitIssue TrackingThird Party Advisory
https://hackerone.com/reports/3749204ExploitIssue TrackingThird Party Advisory

FAQ

What is CVE-2026-9080?

CVE-2026-9080 is a vulnerability with a CVSS score of 7.3 (HIGH). Calling `curl_easy_pause()` within the event-based `CURLMOPT_SOCKETFUNCTION` callback triggers a use-after-free vulnerability, where libcurl attempts to store a flag using a dangling struct pointer im...

How severe is CVE-2026-9080?

CVE-2026-9080 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-9080?

Check the references section above for vendor advisories and patch information. Affected products include: Haxx Curl.