CVE-2026-49875Network attack vector

Data disclosure via unhardened SAX parser factories

Published Jun 12, 2026 · Updated Jun 12, 2026

XXE injection in Apache CXF before 3.6.12 and 4.0.0 through 4.1.6 or 4.2.0 through 4.2.1 allows attackers to disclose data via crafted XML. EndpointReferenceUtils and W3CMultiSchemaFactory create SAXParserFactory instances without disabling DOCTYPE declarations and external entities. A reachable application path must pass attacker-controlled XML to either class; the parser can then resolve an external entity and send an out-of-band request that leaks referenced data.

CVSS severity6.5
Medium
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE injection in Apache CXF before 3.6.12 and 4.0.0 through 4.1.6 or 4.2.0 through 4.2.1 allows attackers to disclose data via crafted XML. EndpointReferenceUtils and W3CMultiSchemaFactory create SAXParserFactory instances without disabling DOCTYPE declarations and external entities. A reachable application path must pass attacker-controlled XML to either class; the parser can then resolve an external entity and send an out-of-band request that leaks referenced data.

The record

CVE
CVE-2026-49875
Published
Jun 12, 2026
Updated
Jun 12, 2026
Vendor
The Apache Software Foundation
Product
Apache CXF
Classifications
CWE-611, T1190
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Jun 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.1.7
  2. Affected versionversion=4.2.0 <4.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

The Apache Software Foundation · Apache CXFversion=0 <4.1.7; version=4.2.0 <4.2.2

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5Red HatCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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