CVE-2026-93711— Dancer2 versions before 2.2.0 for Perl do not strip CR and LF from response header names in headers_to_array
一分钟漏洞结论
影响对象
CVE-2026-93711
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。
Dancer2 versions before 2.2.0 for Perl do not strip CR and LF from response header names in headers_to_array. The routine removes CR and LF from each header value but not from the name. A name carrying them therefore reaches the PSGI server intact. A server th
一、 漏洞 CVE-2026-93711 基础信息
漏洞信息
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Vulnerability Title
Dancer2 versions before 2.2.0 for Perl do not strip CR and LF from response header names in headers_to_array
来源: CVE Program / CVE List V5
Vulnerability Description
Dancer2 versions before 2.2.0 for Perl do not strip CR and LF from response header names in headers_to_array.
The routine removes CR and LF from each header value but not from the name. A name carrying them therefore reaches the PSGI server intact. A server that does not validate keys writes it to the wire, so the bytes after the CRLF arrive as their own header line.
The application has to derive the header name from request data, not just the value.
An attacker who controls that data adds their own headers and splits the response.
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
HTTP头部中CRLF序列转义处理不恰当(HTTP响应分割)
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| - | - | 0 ~ 2.2.0 | - |
|
二、漏洞 CVE-2026-93711 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-93711 补丁与修复 (1)
CVE-2026-93711 其他参考 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2026-93711
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