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CVE-2026-1965— curl 安全漏洞

一分钟漏洞结论

影响对象
curl curl
利用判断
尚无明确在野利用证据,仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本;无法立即升级时,限制受影响服务暴露并加强监测。

curl是cURL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存在安全漏洞,该漏洞源于逻辑错误导致连接重用不当,可能导致使用不同凭据的请求错误地重用同一连接。

AI 预测 6.5 利用难度: 中等 EPSS 0.26% · P16

影响版本矩阵 174

厂商产品 版本范围状态
curl curl 7.10.6< 8.14.2 affected
8.15.0< 8.16.1 affected
8.17.0< 8.19.0 affected
e56ae1426cb7a0a4a427cf8d6099a821fdaae428< f1a39f221d57354990e3eeeddc3404aede2aff70 affected
8.18.0 affected
8.17.0 affected
8.16.0 affected
8.15.0 affected
… +166 条更多
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一、 漏洞 CVE-2026-1965 基础信息

漏洞信息

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Vulnerability Title
bad reuse of HTTP Negotiate connection
来源: CVE Program / CVE List V5
Vulnerability Description
libcurl can in some circumstances reuse the wrong connection when asked to do an Negotiate-authenticated HTTP or HTTPS request. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When reusing a connection a range of criterion must first be met. Due to a logical error in the code, a request that was issued by an application could wrongfully reuse an existing connection to the same server that was authenticated using different credentials. One underlying reason being that Negotiate sometimes authenticates *connections* and not *requests*, contrary to how HTTP is designed to work. An application that allows Negotiate authentication to a server (that responds wanting Negotiate) with `user1:password1` and then does another operation to the same server also using Negotiate but with `user2:password2` (while the previous connection is still alive) - the second request wrongly reused the same connection and since it then sees that the Negotiate negotiation is already made, it sends the request over that connection thinking it uses the user2 credentials when it is in fact still using the connection authenticated for user1... The set of authentication methods to use is set with `CURLOPT_HTTPAUTH`. Applications can disable libcurl's reuse of connections and thus mitigate this problem, by using one of the following libcurl options to alter how connections are or are not reused: `CURLOPT_FRESH_CONNECT`, `CURLOPT_MAXCONNECTS` and `CURLMOPT_MAX_HOST_CONNECTIONS` (if using the curl_multi API).
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
使用基本弱点进行的认证绕过
来源: CVE Program / CVE List V5
Vulnerability Title
curl 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
curl是cURL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存在安全漏洞,该漏洞源于逻辑错误导致连接重用不当,可能导致使用不同凭据的请求错误地重用同一连接。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商 产品 影响版本 CPE 订阅
curl curl 7.10.6 ~ 8.14.2 -
curl curl e56ae1426cb7a0a4a427cf8d6099a821fdaae428 ~ f1a39f221d57354990e3eeeddc3404aede2aff70 -
curl curl 8.18.0 -

二、漏洞 CVE-2026-1965 的公开POC

# POC 描述 源链接 神龙链接
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三、漏洞 CVE-2026-1965 的情报信息

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CVE-2026-1965 厂商安全公告 (1)

同批安全公告 · curl · 2026-03-11 · 共 4 条

CVE-2026-3805 curl 安全漏洞
CVE-2026-3784 curl 安全漏洞
CVE-2026-3783 curl 安全漏洞

IV. Related Vulnerabilities

V. Comments for CVE-2026-1965

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