CVE-2026-28898

MediumCVSS 5.3/10Last modified Oct 25, 2026

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-116

Affected software

VendorProductVersions
Appleswift-nio-http2< 1.44.1

References

Timeline

Published
Jun 25, 2026
Last modified
Oct 25, 2026
NVD status
Analyzed

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CVE-2026-28898: Medium severity, CVSS 5.3 | Vulnix