CVE-2026-8925

CRITICAL

Published Jul 3, 2026 Modified Jul 7, 2026 CWE-415

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.

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CVSS v3.1 Score

9.8

CRITICAL

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

EPSS — Exploit Prediction

0.0059

Probability of exploitation

0.45%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-415 CWE-415

Affected Products

Vendor	Product	Versions
haxx	curl	8.15.0 — 8.21.0

References

Advisories & Patches

https://curl.se/docs/CVE-2026-8925.html https://curl.se/docs/CVE-2026-8925.json

Exploits

https://hackerone.com/reports/3735193 https://hackerone.com/reports/3735193

Frequently Asked Questions

What is CVE-2026-8925? +

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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-8925? +

CVE-2026-8925 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0059, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-8925? +

CVE-2026-8925 affects products from haxx, specifically: curl. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-8925? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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