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CVE-2022-0265· NVD / CVE Program· CNA @huntrdev

Improper Restriction of XML External Entity Reference in hazelcast/hazelcast

Noroxi assessment

Priority: Plan (action score 40/100)

  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 2.7% (FIRST EPSS); higher than 86.1% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: com.hazelcast:hazelcast (Maven) 5.1.
  • Severity is disputed: the assigning authority (CNA) scores it 7.3, NVD 9.8.

Add it to your regular patch cycle. Upgrade to com.hazelcast:hazelcast (Maven) 5.1 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 Restriction of XML External Entity Reference in GitHub repository hazelcast/hazelcast in 5.1-BETA-1.

CriticalCVSS 9.8 · v3.1—Proof of concept Fix available
Published
Mar 3, 2022
Updated
Jun 17, 2026
EPSS
2.7% · 86th percentile

Report tools

JSON

Action score

40

Plan

Add it to your regular patch cycle.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.7%

CNA vs NVD score

NVD
9.8
CNA · @huntrdev
7.3
2.5 point gap

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

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

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
hazelcasthazelcast

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • hazelcast hazelcast5.1

Versions reported by the vendor

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

  • hazelcast hazelcast/hazelcast

    • 5.1-BETA-1affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Mavencom.hazelcast:hazelcastfrom 5.1-beta1 · before 5.15.1

Same product

hazelcast: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-26168The LDAP authentication method in LdapLoginModule in Hazelcast IMDG Enterprise 4.x before 4.0.3, and Jet Enterprise 4.x through 4.2, doesn't
    39Monitor
  • CVE-2026-107726Hazelcast: Arbitrary member memory access by low-privileged client
    37Monitor
  • CVE-2022-36437The Connection handler in Hazelcast and Hazelcast Jet allows a remote unauthenticated attacker to access and manipulate data in the cluster
    36Monitor
  • CVE-2023-33265In Hazelcast through 5.0.4, 5.1 through 5.1.6, and 5.2 through 5.2.3, executor services don't check client permissions properly, allowing au
    35Monitor
  • CVE-2026-107725Hazelcast: Authorization bypass in IMap Predicates API
    34Monitor
  • CVE-2016-10750In Hazelcast before 3.11, the cluster join procedure is vulnerable to remote code execution via Java deserialization.
    33Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
Maven:com.hazelcast:hazelcast5.1Package registry (OSV)

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
SourceKindDate
Proof-of-concept repository on GitHubstars:52022-04-21

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.

  1. Published
  2. First PoC+48 d
  3. TodayOct 17, 2026+1689 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.

No credits in the CNA record.

Variant candidates

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

No nightly-computed relations.

Chain candidates

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

—

Bug bounty scope

No known public program.

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

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.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-611 · Improper Restriction of XML External Entity Reference

CVSS vector

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

nvd-primary

Attack context

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

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

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

All records