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Fencer Intel
medium 5.9

CVE-2026-85243 json

Apache Camel: Camel-Crypto-PGP Integrity Verification Downgrade via Attacker-Controlled Message Structure

published 23d ago modified 8d ago also EUVD-2026-104185

cvss
5.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits
0
none known

Summary

Improper Validation of Integrity Check Value vulnerability in Apache Camel Crypto PGP component.

This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1.

unmarshal() verified the modification detection code only when the message was an OpenPGP symmetrically encrypted integrity protected data packet. The older symmetrically encrypted data packet carries no such code, and OpenPGP's CFB mode is malleable without one, so a message using that packet skipped the check altogether. The packet type is chosen by whoever produced the message, which left the sender - or anyone able to rewrite the message in transit - deciding whether the integrity check applied at all. The existing integrity option governs marshalling only and had no decrypt-side counterpart, so a deployment could not require integrity protection on the messages it accepted.

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. A requireIntegrityProtection option, defaulting to true, now rejects a message that is not integrity protected. Note that signatureVerificationOption still defaults to optional, so a message carrying no signature is accepted; the two options together are what give a decrypted message authenticity and not only confidentiality. For deployments that cannot upgrade immediately, reject messages that do not use the integrity protected packet before they reach the data format. Routes that must interoperate with a sender still emitting the legacy packet should set requireIntegrityProtection=false after upgrading, and treat the decrypted content as unauthenticated.

Patch / fix

  • maven org.apache.camel:camel-crypto-pgp 4.18.5, 4.22.1, 4.23.0
  • Apache Software Foundation Apache Camel 4.18.5, 4.22.1, 4.23.0

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-85243 updated cvss 5.9

org.apache.camel/camel-crypto: camel-crypto: Message tampering via missing integrity check enforcement

  • Red Hat build of Apache Camel 4 for Quarkus 3 camel-crypto 4.18.4.redhat-00007 Red Hat build of Apache Camel for Spring Boot 4 camel-crypto 4.18.4.redhat-00007
    affected: no fix available “Fix deferred”
  • Red Hat Fuse 7 camel-crypto 4.18.4.redhat-00007
    affected: no fix planned “Out of support scope”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
23d ago

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
maven org.apache.camel:camel-crypto-pgp
>=4.0.0, <4.18.5
>=4.19.0, <4.22.1
4.18.5
4.22.1
4.23.0

Affected products

  • Apache Software Foundation Apache Camel

Classification

Weakness
  • CWE-354 Improper Validation of Integrity Check Value

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.