CVE-2026-9080

7.3 HIGH 0.5% exploit odds Fix listed Memory safety

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 0.5% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-07-03 07:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-09-15 07:16 UTC Last updatedMost recent change to the record

Details

Published: 2026-07-03 07:16 UTC
Last modified: 2026-09-15 07:16 UTC
Exploit probability: 0.5% · EPSS, next 30 days
Weakness: CWE-416 · Use after free
Record status: Modified

Affected

Haxx Curl < 8.21.0

Attack profile CVSS 3.1 · 7.3

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: Low

Raw vector

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

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Fix and advisories

References

NVD record · CVE.org record