CVE-2026-64785
🔶 mediumSummary
SwiftNIO HTTP/2 was missing validation on inbound HEADERS frames that let CR, LF, NUL, SP and other control characters reach an HTTP/1.1 backend through NIOHTTP2's HTTP/2-to-HTTP/1 codec, enabling HTTP request smuggling or response splitting. This vulnerability is addressed in swift-nio-http2 version 1.45.0.
CVSS Score
5.3
Medium
EPSS Score
0.2
Exploit Probability
Published Date
2026-07-23
First Seen: 2026-07-31
📊 Relative Risk Intelligence
This CVE is Lower Risk - more severe than 19.4% of all 340,405 vulnerabilities in our database.
#274,198
Below average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: Jul 24, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
YES
Can be exploited automatically
💥 Technical Impact
Partial
Limited system impact
SSVC data provided by
CISA
Last Modified
2026-07-24
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE IDs (Weakness Types)