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CVE-2026-25747 Apache CVE debrief

CVE-2026-25747 is a Deserialization of Untrusted Data vulnerability in the Apache Camel LevelDB component. The vulnerability exists in the DefaultLevelDBSerializer class, which deserializes data from the LevelDB aggregation repository using java.io.ObjectInputStream without proper filtering or class-loading restrictions. This allows an attacker who can write to the LevelDB database files to inject a crafted serialized Java object, leading to arbitrary code execution in the context of the application. The issue affects Apache Camel versions from 4.10.0 before 4.10.8, from 4.14.0 before 4.14.5, and from 4.15.0 before 4.18.0. Users are recommended to upgrade to version 4.18.0 or apply the necessary patches to mitigate the vulnerability.

Vendor
Apache
Product
Camel
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-02-23
Original CVE updated
2026-08-17
Advisory published
2026-02-23
Advisory updated
2026-08-17

Who should care

Apache Camel users and administrators should be aware of this vulnerability and take immediate action to upgrade or patch their installations. The vulnerability has a high CVSS score of 8.8, indicating a significant risk to affected systems. Security teams and developers using Apache Camel should prioritize remediation efforts to prevent potential exploitation.

Technical summary

The vulnerability is caused by the insecure deserialization of data in the DefaultLevelDBSerializer class of the Apache Camel LevelDB component. The class uses java.io.ObjectInputStream to deserialize data from the LevelDB aggregation repository without applying any ObjectInputFilter or class-loading restrictions. This allows an attacker to inject malicious serialized Java objects, which can lead to arbitrary code execution when deserialized. The issue affects multiple versions of Apache Camel, including 4.10.x, 4.14.x, and 4.15.x, prior to the respective patched versions.

Defensive priority

High priority should be given to upgrading or patching Apache Camel installations to prevent potential exploitation of this vulnerability. Security teams should work closely with developers to ensure timely remediation and verify that affected systems are properly updated.

Recommended defensive actions

  • Upgrade Apache Camel to version 4.18.0 or later
  • Apply patches for affected versions (4.10.9 for 4.10.x, 4.14.5 for 4.14.x)
  • Review and update affected systems and dependencies
  • Monitor for suspicious activity and implement additional security measures if necessary
  • Verify the integrity of LevelDB database files and ensure proper access controls are in place

Evidence notes

The CVE-2026-25747 vulnerability was publicly disclosed on February 23, 2026, and has since been modified on June 30, 2026. The vulnerability affects multiple versions of Apache Camel, and users are advised to upgrade or apply patches to mitigate the risk. The CVSS score of 8.8 indicates a high severity vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-25747 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-25747

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-25747 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-25747

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.