Apache Camel-Undertow: The muteException consumer option defaulted to false, so a processing error returned the full Java stack trace in the HTTP response body

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.0057, the 47th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 31 Oct 2026, 14:19 UTC First seen by agentprime
2. 31 Oct 2026, 14:19 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-hjg2-f45w-c566
• OSV: GHSA-hjg2-f45w-c566
• nvd.nist.gov/vuln/detail/CVE-2026-56139
• github.com/apache/camel/pull/23913
• github.com/apache/camel/pull/23923
• github.com/apache/camel/pull/23990
• github.com/apache/camel/commit/6cea553aa42ed1326ac57ad800d66674bc453932
• github.com/apache/camel/commit/b1badb58a407e4d16c8b6bba81650d4c68e55eaf
• github.com/apache/camel/commit/fdcf67a00470783ccb93b948883b6a4c5275aff5
• camel.apache.org/security/CVE-2026-56139.html
• github.com/apache/camel
• github.com/apache/camel/releases/tag/camel-4.14.8
• github.com/apache/camel/releases/tag/camel-4.18.3
• github.com/apache/camel/releases/tag/camel-4.21.0

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.