CVE-2026-8925 SASL double-free
A double-free vulnerability in curl's SASL authentication logic allows attackers to cause denial of service or potentially execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-8925?
CVE-2026-8925 is a critical use after free vulnerability in Haxx Curl, published on 3 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The curl logic that works with SASL authentication could end up cleaning up the GSASL context *twice* without clearing the pointer in between, making it `free()` the same pointer twice.
Weakness: CWE-415
Which versions are affected by CVE-2026-8925?
It affects 1 product.
Products include Haxx Curl.
How do I fix CVE-2026-8925?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-8925 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8925 exists.
Other vulnerabilities in Haxx Curl
Sources
Also known as ALPINE-CVE-2026-8925, BELL-CVE-2026-8925, CURL-CVE-2026-8925, DEBIAN-CVE-2026-8925, ECHO-6728-a303-47fd, GHSA-p8x5-c6c9-8cwx and 4 more.