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CVE-2026-6501

Severity5.3 Medium CVSS 4.0
WeaknessXML external entity (XXE) (CWE-611)
Published4 May 2026
Updated26 Oct 2026

Description

Improper restriction of XML external entity reference vulnerability in ILM Informatique jOpenDocument allows Data Serialization External Entities Blowup. This issue affects jOpenDocument: 1.5.

Exploitation status

No public exploit

No exploit has been reported in the sources we check.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: none
  • Indexed PoC none indexed
  • EPSS 0.23% chance in 30 days

Waratek protection

Protected by Waratek

Waratek has a rule that blocks attacks on this vulnerability.

  • Protection full XXE
  • Action available security rule
  • Review automated Inferred
  • Record active
Decided by A vulnerability class already blocked by an ARMR security rule
Finding Protected by Waratek's ARMR xxe security rule, which blocks this class of attack at the JVM level without a rule written for this CVE specifically. The CVE's weakness is CWE-611: XML External Entity Reference.

How to mitigate CVE-2026-6501

Apply the vendor's fix. Until you can, Waratek RASP blocks exploitation with its XXE rule. It runs inside the Java application, with no code changes.

Waratek RASP Runtime protection for Java applications

Affected software and releases

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.jopendocument:jOpenDocument 0 none 1.3

Products and versions

1 product, 1 version entry
SourceVendorProductSchemeAffected versions
osv org.jopendocument jOpenDocument generic ≤ 1.3

References

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

Timeline

Published2026-05-04By the CVE Program.
NVD record modified2026-10-26NVD's own last-modified date for this record.