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Maven package

org.http4s:http4s-ember-server_3

Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.

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1 actionable advisory, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. High, CVSS 7.5MavenAmendedPublished

    Http4s: DigestAuth nonce map grows unbounded

    CVE-2026-69208 · GHSA-fm4g-76c9-7w69

    Affected
    • Maven org.http4s:http4s-ember-server_3 <= 0.23.34; >= 1.0.0-M1, <= 1.0.0-M46
    Fixed in
    0.23.351.0.0-M47· Vendor fix available
    Issue
    The DigestAuth server middleware's stale-nonce cleanup uses an inverted comparison: it removes fresh nonces and stops at the first stale one. Because a new nonce is created for every unauthenticated challenge, an attacker can drive the nonce map to grow without bound until the JVM runs out of heap. Impact Unauthenticated remote denial of service (gradual heap exhaustion / OOM) against any service using DigestAuth. The leak is persistent. Preconditions - Application uses DigestAuth on at least one route. Workarounds - Front the DigestAuth protected routes with a rate limiter to slow the leak. - Restart periodically. Fixes - The eviction logic is corrected. - A max cache size of 1000000 is imposed to protected against a burst between evictions. This limit is not yet configurable.

    Recommended action: Upgrade to 1.0.0-M47 (pre-release) or 0.23.35 by release line, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:osv.dev (1)github.com (2)Source checked Evidence →