← CVE Intelligence

CVE-2026-69208

Http4s: DigestAuth nonce map grows unbounded PUBLISHED

Description (CNA)

Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, the DigestAuth server middleware removes fresh nonces and stops eviction at the first stale nonce because its stale-nonce comparison is inverted. On an application that protects at least one route with DigestAuth, an unauthenticated attacker can repeatedly trigger authentication challenges, causing the persistent nonce map to grow until the JVM exhausts heap memory. This issue is fixed in versions 0.23.35 and 1.0.0-M47.

Affected (CNA)

Vendor / productVersions
http4s / http4saffected < 0.23.35; affected >= 1.0.0-M1, < 1.0.0-M47

CWE

CWE-400, CWE-401

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.