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CVE-2026-8925

42
FAUCET Score

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.

First published: Jul 3, 2026Last modified: Jul 3, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 8.15.0, < 8.21.0CPE matchmatch criteria
cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*
>= 8.15.0, <= 8.15.0CPE match
cpe:2.3:a:curl:curl:*:*:*:*:*:*:*:*
>= 8.16.0, <= 8.16.0CPE match
cpe:2.3:a:curl:curl:*:*:*:*:*:*:*:*
>= 8.17.0, <= 8.17.0CPE match
cpe:2.3:a:curl:curl:*:*:*:*:*:*:*:*
>= 8.18.0, <= 8.18.0CPE match
cpe:2.3:a:curl:curl:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.59%
Probability of exploitation in next 30 days
EPSS Percentile
44.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0059 is in the 25th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

ubuntupatch availablevia ubuntu_usn
Product: curl (bionic)Fixed in: 7.58.0-2ubuntu3.24+esm9
ubuntupatch availablevia ubuntu_usn
Product: curl (focal)Fixed in: 7.68.0-1ubuntu2.25+esm4
ubuntupatch availablevia ubuntu_usn
Product: curl (jammy)Fixed in: 7.81.0-1ubuntu1.25
ubuntupatch availablevia ubuntu_usn
Product: curl (noble)Fixed in: 8.5.0-2ubuntu10.10
ubuntupatch availablevia ubuntu_usn
Product: curl (questing)Fixed in: 8.14.1-2ubuntu1.4
ubuntupatch availablevia ubuntu_usn
Product: curl (resolute)Fixed in: 8.18.0-1ubuntu2.2
ubuntupatch availablevia ubuntu_usn
Product: curl (trusty)Fixed in: 7.35.0-1ubuntu2.20+esm20
ubuntupatch availablevia ubuntu_usn
Product: curl (xenial)Fixed in: 7.47.0-1ubuntu2.19+esm16

Vendor Advisories (2)

microsoft2026-Jul/CVE-2026-8925Moderate

SASL double-free

Jul 2, 2026
ubuntuUSN-8487-1

curl vulnerabilities

Jun 30, 2026

References

curl.se / docs/CVE-2026-8925.html
PatchVendor Advisory
curl.se / docs/CVE-2026-8925.json
Vendor Advisory
hackerone.com / reports/3735193
ExploitIssue TrackingThird Party Advisory