Race condition in Apache Camel PQC component skips signature checks
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
Apache Camel from 4.12.0 before 4.18.5 and from 4.19.0 before 4.22.1 is affected in its PQC component. The producer shares one java.security.Signature instance across concurrent exchanges without synchronization (CWE-362), so update and verify calls from different messages interleave. A verification can then report success for a message whose signature was never checked. A remote attacker with no privileges can trigger this through concurrent traffic to the same endpoint, which is the normal condition for a route under load, and the impact is to integrity.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Camel PQC component. This issue affects Apache Camel: from 4.12.0 before 4.18.5, from 4.19.0 before 4.22.1. The producer held a single java.security.Signature instance and used it for every exchange without synchronizing access. Signature is stateful and is not thread safe: update() accumulates the data to be signed or verified, and verify() consumes that accumulated state. With concurrent exchanges sharing one instance the update and verify calls of different messages interleave, so a verification can complete against data that belongs to another exchange, or against a partially accumulated buffer. The outcome is non-deterministic and includes a verification reporting success for a message whose signature was never actually checked, which defeats the guarantee the component exists to provide. Reaching it requires concurrent traffic through the same endpoint, which is the ordinary condition for a Camel route under load. Upgrade to Apache Camel 4.23.0, which fixes the issue. Users on the 4.18.x LTS releases stream should upgrade to 4.18.5. Users on the 4.22.x LTS releases stream should upgrade to 4.22.1. The Signature instance is no longer shared across concurrent exchanges. For deployments that cannot upgrade immediately, restrict the affected route to a single concurrent consumer so that no two exchanges use the instance at once.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Upgrade Apache Camel to 4.18.5 on the 4.18.x LTS stream, to 4.22.1 on the 4.22.x LTS stream, or to 4.23.0. Deployments that cannot upgrade immediately can restrict the affected route to a single concurrent consumer so that no two exchanges use the instance at once.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
- Fix · CNA Apache Camel (Apache Software Foundation) Fixed in 4.18.5, 4.22.1, 4.23.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apache Camel 4.18.5, 4.22.1
39 records Highest priority Priority HIGH 6 HIGH, 9 MEDIUM, 24 LOW
Other records, highest priority first
- TI-2026-76322 Unsafe deserialization in Apache Camel camel-hazelcastPriority HIGH 82
- TI-2026-76339 Path traversal in Apache Camel azure-files componentPriority HIGH 74
- TI-2026-76330 Path traversal in Apache Camel FTP consumer escapes polled directoryPriority HIGH 74
Vendor assessments
Timeline
- 2026-10-19 Threatist record created from CVE-2026-85248
- 2026-10-19 Alias added: GHSA-c82p-3629-24h6
- 2026-10-19 CISA SSVC decision points changed
- 2026-10-19 Priority changed: MEDIUM → LOW
- 2026-11-06 Affected versions changed · Red Hat
- 2026-11-06 CVSS score added · Red Hat
References
Patch 3
Other 1
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Sources
- CVE-2026-85248 · CVE Program
- CVE-2026-85248 · NVD
- FIRST EPSS
- GHSA-c82p-3629-24h6 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-85248 · Red Hat security data · CC BY 4.0
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