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CVE-2026-8925— SASL double-free

Quick assessment

Affected
curl curl
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

curl是瑞典cURL团队开源的一款用于从服务器传输数据或向服务器传输数据的工具。 curl 版本存在资源管理错误漏洞，该漏洞源于SASL认证逻辑在清理GSASL环境时未清除指针，导致双重释放，可能造成释放后重用。

AI Predicted 7.8 Difficulty: Easy EPSS 1.08% · P64

Possible ATT&CK Techniques 1 AI

T1200 · Hardware Additions

Affected Version Matrix 9

VendorProduct Version RangeStatus
curl curl 8.15.0< 8.16.1 affected
8.17.0< 8.20.1 affected
ab650379a8c25ca952f651476d25b4cdd77bb3fc< 3da249e1f0716c06644ed3522a37a8bf81808012 affected
8.20.0 affected
8.19.0 affected
8.18.0 affected
8.17.0 affected
8.16.0 affected
… +1 more rows
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I. Basic Information for CVE-2026-8925

Vulnerability Information
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Vulnerability Title
SASL double-free
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
双重释放
Source: CVE Program / CVE List V5
Vulnerability Title
curl 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
curl是瑞典cURL团队开源的一款用于从服务器传输数据或向服务器传输数据的工具。 curl 版本存在资源管理错误漏洞，该漏洞源于SASL认证逻辑在清理GSASL环境时未清除指针，导致双重释放，可能造成释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
curl curl 8.15.0 ~ 8.16.1 -
curl curl ab650379a8c25ca952f651476d25b4cdd77bb3fc ~ 3da249e1f0716c06644ed3522a37a8bf81808012 -
curl curl 8.20.0 -

II. Public POCs for CVE-2026-8925

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III. Intelligence Information for CVE-2026-8925

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Vendor Advisories for CVE-2026-8925 (3)

Same Patch Batch · curl · 2026-07-03 · 18 CVEs total

CVE-2026-9546 sending old referer
CVE-2026-8932 incomplete mTLS config matching in conn reuse
CVE-2026-8458 wrong reuse for different services
CVE-2026-8286 wrong STARTTLS connection reuse
CVE-2026-8927 env-set cross-proxy Digest auth state leak
CVE-2026-8926 password leak with netrc and user in URL
CVE-2026-8924 trailing dot domain super cookie
CVE-2026-12064 proto-default skips SSH verification
CVE-2026-10536 HTTP/2 stream-dependency tree UAF
CVE-2026-11352 QUIC zero-length UDP datagrams busy-loop
CVE-2026-9545 exposing HTTP/3 early data
CVE-2026-9080 UAF after pause in socket callback
CVE-2026-9547 SSH improper host validation
CVE-2026-9079 stale proxy password leak
CVE-2026-11564 Native CA trust persist
CVE-2026-11856 cross-origin Digest auth state leak
CVE-2026-11586 WS Auto-PONG memory exhaustion

IV. Related Vulnerabilities

Same product: curl
Same vendor: curl
Same weakness: CWE-415

V. Comments for CVE-2026-8925

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