CVE-2026-73494 Blaze - Authorization Bypass & Cache Poisoning

Blaze Scala library < 0.23.18 and 1.0.0-M1 to < 1.0.0-M42 contains an HTTP/1.1 parsing vulnerability caused by lax header and request boundary validation in Http1ServerParser, letting attackers cause authorization bypass or cache poisoning, exploit requires a pair of disagreeing parsers.

CVSS base score 7.4 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.63% chance of exploitation in 30 days
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