CVE-2026-40998Network attack vector

File disclosure and SSRF via default XPath parsing

Published Jun 11, 2026 · Updated Jun 11, 2026

XXE in Spring Web Services allows remote attackers to read local files or initiate server-side requests through crafted XML. Jaxp13XPathTemplate passes StreamSource and SAXSource content to XPath.evaluate as an InputSource, causing the JDK's default DocumentBuilderFactory to parse untrusted XML instead of Spring's hardened parser. Exposure requires remote-user-influenced XML to reach XPath evaluation through those source types; affected releases are 3.1.0 through 3.1.8, 4.0.0 through 4.0.18, 4.1.0 through 4.1.3, and 5.0.0 through 5.0.1.

CVSS severity8.2
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE in Spring Web Services allows remote attackers to read local files or initiate server-side requests through crafted XML. Jaxp13XPathTemplate passes StreamSource and SAXSource content to XPath.evaluate as an InputSource, causing the JDK's default DocumentBuilderFactory to parse untrusted XML instead of Spring's hardened parser. Exposure requires remote-user-influenced XML to reach XPath evaluation through those source types; affected releases are 3.1.0 through 3.1.8, 4.0.0 through 4.0.18, 4.1.0 through 4.1.3, and 5.0.0 through 5.0.1.

The record

CVE
CVE-2026-40998
Published
Jun 11, 2026
Updated
Jun 11, 2026
Vendor
Spring
Product
Spring Web Services
Classifications
CWE-611, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 11, 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=3.1.0 <3.1.9
  2. Affected versionversion=4.0.0 <4.0.19
  3. Affected versionversion=4.1.0 <4.1.4
  4. Affected versionversion=5.0.0 <5.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Spring · Spring Web Servicesversion=3.1.0 <3.1.9; version=4.0.0 <4.0.19; version=4.1.0 <4.1.4; version=5.0.0 <5.0.2

Published CVSS scores

8.2VMwareCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/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
Privilegesunauthenticated
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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