CVE-2026-78162
Apache Camel: Camel-Hazelcast Managed Instances Missing Java Deserialization Filter (Incomplete Fix for CVE-2026-43865)
02 Description
Apache Camel: Camel-Hazelcast Managed Instances Missing Java Deserialization Filter (Incomplete Fix for CVE-2026-43865)
03 Exploitation and scoring
- Exploitation
- Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
- SSVC decision
- ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.91% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 59.9% of scored records. A rank, not a probability.
- NVD base score
- 10.0 (CVSS v4.0), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- NVD analysis status
- Awaiting Analysis. NVD last modified this record on 2026-10-20.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-10-19 10:03Z10 DAYS AGO
- Last updated
- 2026-10-20 03:55Z9 DAYS AGO
- Reserved
- 2026-08-23
- Assigning CNA
- apache
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 10.0)
- CNA CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
- Weaknesses
- CWE-502Deserialization of Untrusted DataBase
- Data version
- 5.2
- Document digest
- 357df12bcc4bfe0f15e4becb77482a76136278dbe7bcab0b84dfc9c9524fe404
05 Affected products
06 References
- camel.apache.orgApache Camel Security Advisory - CVE-2026-78162https://camel.apache.org/security/CVE-2026-78162.html
- issues.apache.orgCAMEL-24413https://issues.apache.org/jira/browse/CAMEL-24413
- issues.apache.orgCAMEL-24420https://issues.apache.org/jira/browse/CAMEL-24420
- github.comCAMEL-24413 fix on main, for 4.23.0 (commit 27836f4c17ed8cf33f1ef4dff9daed903b1b8907)https://github.com/apache/camel/pull/25566
- github.comCAMEL-24420 fix on main, for 4.23.0 (commit 07318cfe7e07379a6155117d9c2cf27e99af4687)https://github.com/apache/camel/pull/25595
- github.comBackport of both fixes to camel-4.22.x, for 4.22.1 (commit 02a864ba28f80bf8076f00aa2094c46377a74f43)https://github.com/apache/camel/pull/25599
- github.comBackport of both fixes to camel-4.18.x, for 4.18.5 (commit aea69111dc3ff1f8a32271fc95632aee32eb3f37)https://github.com/apache/camel/pull/25600
- camel.apache.orgCVE-2026-43865 - the earlier advisory whose fix was incompletehttps://camel.apache.org/security/CVE-2026-43865.html
07 Remediation
Upgrade to Apache Camel 4.23.0, which fixes the issue. Users on the 4.22.x releases stream should upgrade to 4.22.1. Users on the 4.18.x releases stream should upgrade to 4.18.5. The 4.14.x releases stream and earlier reached end of life before this issue was resolved and will not receive a fix, so deployments on those lines must move to a supported release. The fix adds an applyDefault(ClientConfig) overload to HazelcastSerializationFilterHelper and calls the helper on both previously uncovered paths, so every Hazelcast configuration that Camel builds itself now carries the default filter, which whitelists the class name prefixes java., javax. and org.apache.camel. and blacklists java.net. A user-supplied Config, ClientConfig or HazelcastInstance is still left untouched.