---
title: "CVE-2026-92877: JAXB - XML External Entity Injection"
description: "JAXB contains an XML External Entity (XXE) injection caused by insufficient protection relying only on FEATURE_SECURE_PROCESSING, letting attackers read local files via out-of-band XXE, exploit requires untrusted XML unmarshalling."
url: https://panop.io/threat-heartbeat/CVE-2026-92877/
---

# CVE-2026-92877 JAXB - XML External Entity Injection

JAXB contains an XML External Entity (XXE) injection caused by insufficient protection relying only on FEATURE\_SECURE\_PROCESSING, letting attackers read local files via out-of-band XXE, exploit requires untrusted XML unmarshalling.

CVSS base score 8.3 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.27% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-92877)

## Details

Type

XML External Entity Injection

Impact

File System Read, Information Disclosure

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Published

12 October 2026

Updated

15 October 2026

Weakness

[CWE-611](https://cwe.mitre.org/data/definitions/611.html)

## Vendor fix

Update to the latest version with proper XXE protections beyond FEATURE\_SECURE\_PROCESSING.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-92877](https://nvd.nist.gov/vuln/detail/CVE-2026-92877)
- [https://github.com/eclipse-ee4j/jaxb-ri/pull/2013](https://github.com/eclipse-ee4j/jaxb-ri/pull/2013)
- [https://gitlab.eclipse.org/security/cve-assignment/-/work\_items/310](https://gitlab.eclipse.org/security/cve-assignment/-/work_items/310)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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