CVE-2023-49656: Jenkins MATLAB Plugin 2.11.0 and earlier does not configure its XML parser to prevent XML external entity (XXE

Q: How do I fix CVE-2023-49656?

matlab: upgrade to 2.11.1. Exact commands for each OS are on this page.

Q: Is CVE-2023-49656 being exploited?

CVE-2023-49656 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-49656 affect?

CVE-2023-49656 affects matlab. Severity is critical (CVSS 9.8). Jenkins MATLAB Plugin 2.11.0 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.

Q: How urgent is CVE-2023-49656?

Priority 54/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2023-49656 is a critical-severity flaw (CVSS 9.8) affecting matlab. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Jenkins MATLAB Plugin 2.11.0 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 42%)
CISA exploited list	No
Weakness	CWE-611
Published	2023-11-29
Last modified	2026-06-17

Publisher (CNA): Jenkins Project · Vendor: jenkins

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-11-29 14:15 UTCPublished CVE record published
2026-06-17 06:36 UTCUpdated Record last modified

jenkins matlab UPGRADE

Affected: < 2.11.1

Fixed in: 2.11.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy matlab || rpm -q matlab || matlab --version

2. UPGRADE to 2.11.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade matlab

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade matlab

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-49656?

matlab: upgrade to 2.11.1. Exact commands for each OS are on this page.

Is CVE-2023-49656 being exploited?

CVE-2023-49656 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-49656 affect?

CVE-2023-49656 affects matlab. Severity is critical (CVSS 9.8). Jenkins MATLAB Plugin 2.11.0 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.

How urgent is CVE-2023-49656?

Priority 54/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Jenkins vulnerabilities

Related CVEs

CVE-2023-49673 HIGH 8.8 UPGRADE UPGRADE A cross-site request forgery (CSRF) vulnerability in Jenkins NeuVector Vulnerability Scanner Plugin 1.22 and e
CVE-2023-49655 HIGH 8.8 UPGRADE A cross-site request forgery (CSRF) vulnerability in Jenkins MATLAB Plugin 2.11.0 and earlier allows attackers
CVE-2023-49654 CRITICAL 9.8 UPGRADE Missing permission checks in Jenkins MATLAB Plugin 2.11.0 and earlier allow attackers to have Jenkins parse an
CVE-2021-28967 CRITICAL 9.8 UPGRADE The unofficial MATLAB extension before 2.0.1 for Visual Studio Code allows attackers to execute arbitrary code

References

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