Apache Camel: Camel Message Header Injection via Improper Filtering

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 0.97, the 99th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 31 Oct 2026, 15:11 UTC First seen by agentprime
2. 31 Oct 2026, 15:11 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-2c2h-2855-mf97
• OSV: GHSA-2c2h-2855-mf97
• nvd.nist.gov/vuln/detail/CVE-2025-27636
• github.com/apache/camel/commit/23a833eec6131a3cdce6e4b1b40b3ac2035b6adf
• github.com/apache/camel/commit/45a6b74f7f8af8fd58f197566938a9534392a624
• camel.apache.org/security/CVE-2025-27636.html
• github.com/akamai/CVE-2025-27636-Apache-Camel-PoC/blob/main/src/main/java/com/example/camel/VulnerableCamel.java
• github.com/apache/camel
• github.com/apache/camel/blob/camel-4.9.0/core/camel-support/src/main/java/org/apache/camel/support/DefaultHeaderFilterStrategy.java
• issues.apache.org/jira/browse/CAMEL-21828
• lists.apache.org/thread/l3zcg3vts88bmc7w8172wkgw610y693z
• www.openwall.com/lists/oss-security/2025/03/09/1

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.