---
title: "CVE-2019-3465\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-2019-3465?format=md
keywords: index, follow
---

# CVE-2019-3465

Publication date 7 November 2019

Last updated 15 September 2026

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**8.8 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2019-3465?format=md#impact-score)

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## Description

Rob Richards XmlSecLibs, all versions prior to v3.0.3, as used for example
by SimpleSAMLphp, performed incorrect validation of cryptographic
signatures in XML messages, allowing an authenticated attacker to
impersonate others or elevate privileges by creating a crafted XML message.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| simplesamlphp | 26.04 LTS resolute | Not affected |
| 25.10 questing | Not affected |
| 25.04 plucky | Not affected |
| 24.10 oracular | Not affected |
| 24.04 LTS noble | Not affected |
| 23.10 mantic | Not affected |
| 23.04 lunar | Not affected |
| 22.10 kinetic | Not affected |
| 22.04 LTS jammy | Not affected |
| 21.10 impish | Not affected |
| 21.04 hirsute | Not affected |
| 20.10 groovy | Not affected |
| 20.04 LTS focal | Not affected |
| 19.10 eoan | Ignored end of life |
| 19.04 disco | Ignored end of life |
| 18.04 LTS bionic | Fixed 1.15.3-1ubuntu0.1~esm1  Ubuntu Pro |
| 16.04 LTS xenial | Fixed 1.14.0-1ubuntu2+esm1 |
| 14.04 LTS trusty | Not in release |

---

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

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## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

8.8 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | Low |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | High |
  | Integrity impact | High |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 8.8 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3465)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-3465)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2019-3465)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2019-3465)

### Related Ubuntu Security Notices (USN)

+ [USN-8770-1](https://usn.ubuntu.com/USN-8770-1)
+ SimpleSAMLphp vulnerabilities
+ 15 September 2026

### Other references

* <https://groups.google.com/forum/#!msg/simplesamlphp-announce/2odMqz63z7k/6zQQeM91EwAJ>
* <https://www.cve.org/CVERecord?id=CVE-2019-3465>