---
title: "CVE-2026-16626\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2026-16626?format=md
keywords: index, follow
---

# CVE-2026-16626

Publication date 10 August 2026

Last updated 13 August 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

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## Description

Improper restriction of XML external entity reference vulnerability
(unauthenticated) in Jaspersoft JasperReports Server.
This issue affects JasperReports Server: from 9.0.0 before HF-9 and from
10.0.0 before HF-10.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| jasperreports | 26.04 LTS resolute | Not in release |
| 24.04 LTS noble | Not in release |
| 22.04 LTS jammy | Not in release |
| 18.04 LTS bionic | Needs evaluation |
| 16.04 LTS xenial | Needs evaluation |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v4.0

**Base score**

9.3 · Critical

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Attack requirements | None |
  | Privileges required | None |
  | User interaction | None |
  | Vulnerable system - Confidentiality impact | High |
  | Vulnerable system - Integrity impact | High |
  | Vulnerable system - Availability impact | Low |
  | Subsequent system - Confidentiality impact | Low |
  | Subsequent system - Integrity impact | Low |
  | Subsequent system - Availability impact | Low |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 9.3 · Critical |
  | Base + Threat score | - |
  | Base + Environmental score | - |
  | Base + Threat + Environmental score | - |

**Vector:** CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:L

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-16626)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-16626)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-16626)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-16626)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2026-16626>
* <https://community.jaspersoft.com/advisories/jaspersoft-security-advisory-august-05-2026-jasperreports-server-cve-2026-16626-r12/>