CVE-2026-6501

MEDIUMNVD 5.35.3—

5.3

Improper restriction of XML external entity reference vulnerability in ILM Informatique jOpenDocument allows Data Serialization External Entities Blowup.

This issue affects jOpenDocument: 1.5.

CVSS v3: 5.3
EG Score: 5.3(medium)
EPSS: 19.7%
KEV: Not listed

Published

May 4, 2026

Last Modified

May 5, 2026

Advisory Details (1)

Auto-updated May 4, 2026

No patch confirmed yet.

generic

jOpenDocument - Documentation

https://www.jopendocument.org/documentation.html

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
maven	org.jopendocument:jOpenDocument	—	ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)

Maven(1)

Package	Vulnerable range	Fixed in	Dependents
org.jopendocument:jOpenDocument	1.0, 1.1, 1.2, 1.3, 1.3b1	—	—

Data Freshness Timeline

(refreshed 7× in last 7d / 10× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-23 00:08 UTCEG score recompute
2026-05-21 22:43 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 14:36 UTCEG score recompute
2026-05-20 14:36 UTCGHSA enrichment
2026-05-20 11:22 UTCepss_batch

Frequently asked(5)

What is CVE-2026-6501?

CVE-2026-6501 is a medium vulnerability published on May 4, 2026. Improper restriction of XML external entity reference vulnerability in ILM Informatique jOpenDocument allows Data Serialization External Entities Blowup. This issue affects jOpenDocument: 1.5.

When was CVE-2026-6501 disclosed?

CVE-2026-6501 was first published in the National Vulnerability Database on May 4, 2026, with the most recent update on May 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-6501 actively exploited?

CVE-2026-6501 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 19.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-6501?

CVE-2026-6501 has a CVSS v3 base score of 5.3 (NVD).

How do I remediate CVE-2026-6501?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6501, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-6501

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