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CVE-2026-28898

Quick assessment

Affected
Apple swift-nio-http2
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.

Apple swift-nio-http2是美国Apple公司开源的一个HTTP/2协议的Swift实现组件。 Apple swift-nio-http2 1.44.1之前版本存在输出处理不当漏洞，该漏洞源于HTTP/2-to-HTTP/1.1编解码器未验证伪标头值中的控制字符，可能导致包含CR、LF或NUL字节的请求或响应被以连接错误处理。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.31% · P23

Affected Version Matrix 1

VendorProduct Version RangeStatus
Apple swift-nio-http2 < 1.44.1 affected
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I. Basic Information for CVE-2026-28898

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
swift-nio-http2's HTTP/2-to-HTTP/1.1 codec did not validate pseudo-header values for control characters before placing them into the translated HTTP/1.1 message. swift-nio-http2 1.44.1 adds validation of all pseudo-header values (:path, :authority, :scheme, :method, and :status) at both the HPACK header validation layer and the HTTP/2-to-HTTP/1.1 translation layer. Requests or responses containing CR, LF, or NUL bytes in any pseudo-header value are now rejected with a connection error. This issue is fixed in swift-nio-http2 1.44.1.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Apple swift-nio-http2 输出处理不当漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apple swift-nio-http2是美国Apple公司开源的一个HTTP/2协议的Swift实现组件。 Apple swift-nio-http2 1.44.1之前版本存在输出处理不当漏洞，该漏洞源于HTTP/2-to-HTTP/1.1编解码器未验证伪标头值中的控制字符，可能导致包含CR、LF或NUL字节的请求或响应被以连接错误处理。
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
Apple swift-nio-http2 0 ~ 1.44.1 -

II. Public POCs for CVE-2026-28898

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III. Intelligence Information for CVE-2026-28898

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Vendor Advisories for CVE-2026-28898 (1)

IV. Related Vulnerabilities

Same product: swift-nio-http2
Same vendor: Apple

V. Comments for CVE-2026-28898

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