CVE.org (no NVD analysis yet)· CNA apache

CVE-2026-84181: Apache Camel: Camel-Shiro Authentication Bypass via Skipped Credential Verification on Subject Reuse

Noroxi assessment

Priority: Monitor (action score 23/100)

Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
Probability of exploitation in the next 30 days: 0.41% (FIRST EPSS).
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
Fixed version: Apache Software Foundation Apache Camel 4.18.5, 4.22.1.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Apache Software Foundation Apache Camel 4.18.5, 4.22.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Improper Authentication vulnerability in Apache Camel Shiro component. This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1. The Shiro security processor skipped credential verification when the subject already bound to the current thread carried the same principal as the incoming exchange. Because the thread that carries a Camel exchange is drawn from a pool and reused across exchanges, a subject left bound by an earlier authenticated exchange could satisfy the check for a later one that presented no valid credentials of its own. The password on the incoming exchange was, in that case, never verified. The condition depends on thread reuse and on the principal matching, which is why it is not reached on every request, but it requires nothing of the attacker beyond sending a request naming a principal that is in active use. 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 processor now verifies the presented credentials on every exchange rather than accepting a subject already bound to the thread. Setting alwaysReauthenticate=false restores the previous behaviour for deployments that depend on it. For deployments that cannot upgrade immediately, ensure the Shiro subject is cleared from the thread at the end of every exchange so that no subject can be inherited by a later one.

MediumCVSS 5.9 · v3.1—Proof of concept Fix available

Published: Oct 19, 2026
Updated: Oct 19, 2026
EPSS: 0.4% · 36th percentile
CWE: CWE-287

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 23 / 40 · 5.9 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.4%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · apache: 5.9; NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
Proof of concept exists, no weaponized module
A fix has been released

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Noroxi analysis

What does it mean in your environment?

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Affected systems

Is your version affected?

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Versions reported by the vendor

Affected version ranges reported by the assigning authority (apache). Independent of NVD's CPE analysis and usually ahead of it.

Apache Software Foundation Apache Camel
- 4.18.5, 4.22.1, 4.23.0not affected
- 4.0.0 and later · before 4.18.5affected · maven
- 4.19.0 and later · before 4.22.1affected · maven

Same product

apache software foundation: all records

Other highest-scoring records for the same primary product.

CVE-2026-78162Apache Camel: Camel-Hazelcast Managed Instances Missing Java Deserialization Filter (Incomplete Fix for CVE-2026-43865)
40Plan
CVE-2026-88900Apache Camel: Camel-JGroups: Unsafe Java Deserialization of Cluster Messages in the JGroups Consumer Can Lead to Remote Code Execution
35Monitor
CVE-2026-83531Apache Camel: Camel-Dynamic-Router Control Endpoint Compiles Predicate Expressions Supplied by Control Messages
35Monitor

Published before and after this one in the same product

← EarlierCVE-2026-84178Oct 19, 2026 · Apache Camel: Camel-OAuth Login Cross-Site Request Forgery via Missing State Binding in the Authorization Code Flow
24Monitor
← EarlierCVE-2026-84180Oct 19, 2026 · Apache Camel: Camel-Knative Information Disclosure via Unmuted Consumer Exceptions
21Monitor
Later →CVE-2026-85243Oct 19, 2026 · Apache Camel: Camel-Crypto-PGP Integrity Verification Downgrade via Attacker-Controlled Message Structure
23Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Apache Software Foundation Apache Camel	4.18.5	Vendor (CNA)
Apache Software Foundation Apache Camel	4.22.1	Vendor (CNA)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
Source	Kind	Date
Proof-of-concept repository on GitHub	stars:0	2026-10-19

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

First PoCOct 19, 2026same day
PublishedOct 19, 2026
Fix recordedOct 19, 2026same day
TodayNov 1, 2026+14 d

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Claude Securityfinder
Andrea Cosentinoremediation developer

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-803120 days apartApache Camel: Camel-OAuth Authentication Bypass via Fail-Open Processors
32Monitor
CVE-2026-853010 days apartApache Camel: Camel-Keycloak Issuer Validation Bypass When the Introspection Response Omits the iss Claim
19Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

CVE-2026-781650 days apartApache Camel: Camel-Spring-Redis Unfiltered Java Deserialization of Redis Payloads
35Monitor
CVE-2026-835310 days apartApache Camel: Camel-Dynamic-Router Control Endpoint Compiles Predicate Expressions Supplied by Control Messages
35Monitor
CVE-2026-956287 days apartApache Camel: Camel-Docling Custom CLI Argument Path Validation Does Not Reject Absolute Paths (Incomplete Fix of CVE-2026-40047)
21Monitor
CVE-2026-956297 days apartApache Camel: Camel-Docling Unvalidated Output Path Header Enables Writing Conversion Output to an Arbitrary Directory
21Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

TR-26-1361 · Oct 20, 2026(Apache Çoklu Proje Güvnelik Zafiyeti)

All national notices →

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
Special conditions such as timing or configuration are required.

If successful

Confidentiality: high · data can be read
Integrity: none
Availability: none

Attack vector: Network
Attack complexity: High
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: None
Availability impact: None

Weakness class (CWE)

CWE-287 · Improper Authentication

CVSS vector

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

nvd-secondary

Root cause

Authentication is added route by route instead of being enforced in one place. When a route added later bypasses the shared middleware, the session check never runs for it.

The bug in code

The whole CWE-287 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1app.use("/admin", requireSession, adminRouter);
2

3// Route added later skips the middleware
4app.post("/admin-api/config", updateConfig);

Fixed

1const admin = express.Router();
2admin.use(requireSession, requireRole("admin"));
3

4admin.post("/config", updateConfig);
5app.use("/admin", admin);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

Change log

Exploit maturitynone → pocOct 20, 2026, 3:35 AM UTC
SSVC exploitation— → noneOct 19, 2026, 8:07 PM UTC
Exploit maturity— → noneOct 19, 2026, 12:07 PM UTC
Fix✗ → ✓Oct 19, 2026, 12:07 PM UTC

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References

camel.apache.org/security/CVE-2026-84181.html

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

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