---
cve: "CVE-2026-40048"
severity: "HIGH"
cvss: 7.8
epss: "25%"
vendor: "Apache Software Foundation"
kev: false
exploited: false
published: "2026-04-27 09:16:01"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T13:01:27+02:00"
---

# CVE-2026-40048

> 7.8 HIGH

## Beschreibung

The Camel-PQC FileBasedKeyLifecycleManager class deserializes the contents of `.key` files in the configured key directory using java.io.ObjectInputStream without applying any ObjectInputFilter or class-loading restrictions. The cast to `java.security.KeyPair` is evaluated only after `readObject()` has already returned, so any `readObject()` side effects in the deserialized object run before the type check. An attacker who can write to the key directory used by a Camel application — for example through a path traversal into the directory, misconfigured filesystem permissions on the volume where keys are stored, a compromised key provisioning pipeline, or a symlink attack — can place a crafted serialized Java object that, when deserialized during normal key lifecycle operations, results in arbitrary code execution in the context of the application.

This issue affects Apache Camel: from 4.19.0 before 4.20.0, from 4.18.0 before 4.18.2.

Users are recommended to upgrade to version 4.20.0, which fixes the issue by replacing java.io.ObjectInputStream-based key and metadata storage with standard PKCS#8 (private key) / X.509 SubjectPublicKeyInfo (public key) Base64 JSON encoding. For users on the 4.18.x LTS releases stream, upgrade to 4.18.2.

## CVSS-Vektor

```
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 2326a42c5595aa1eee21caafeee75f8e7f0261ea (Commit)

## Referenzen

- <https://camel.apache.org/security/CVE-2026-40048.html>
- <http://www.openwall.com/lists/oss-security/2026/04/26/6>
- <https://access.redhat.com/security/cve/CVE-2026-40048>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2463176>
- <https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40048.json>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-40048) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_