CVE-2018-20437: An issue was discovered in the fileDownload function in the CommonController class in FEBS-Shiro before 2018-1

Q: How do I fix CVE-2018-20437?

febs-shiro: upgrade to 2018.11.05. Exact commands for each OS are on this page.

Q: Is CVE-2018-20437 being exploited?

CVE-2018-20437 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-2018-20437 affect?

CVE-2018-20437 affects febs-shiro. Severity is high (CVSS 7.5). An issue was discovered in the fileDownload function in the CommonController class in FEBS-Shiro before 2018-11-05. An attacker can download a file via a request of the form /common/download?filename=1.jsp&delete=false. NOTE: the software m

Q: How urgent is CVE-2018-20437?

Priority 57/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2018-20437 is a high-severity flaw (CVSS 7.5) affecting febs-shiro. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in the fileDownload function in the CommonController class in FEBS-Shiro before 2018-11-05. An attacker can download a file via a request of the form /common/download?filename=1.jsp&delete=false. NOTE: the software maintainer disputes the significance of this report because the product uses a JAR archive for deployment, and this contains application.yml with configuration data

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Weakness	CWE-22
Published	2018-12-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mrbird

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

Am I affected?

Timeline

2018-12-25 15:29 UTCPublished CVE record published
2026-06-17 01:52 UTCUpdated Record last modified

mrbird febs-shiro UPGRADE

Affected: < 2018.11.05

Fixed in: 2018.11.05

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy febs-shiro || rpm -q febs-shiro || febs-shiro --version

2. UPGRADE to 2018.11.05 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade febs-shiro

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade febs-shiro

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-2018-20437?

febs-shiro: upgrade to 2018.11.05. Exact commands for each OS are on this page.

Is CVE-2018-20437 being exploited?

CVE-2018-20437 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-2018-20437 affect?

CVE-2018-20437 affects febs-shiro. Severity is high (CVSS 7.5). An issue was discovered in the fileDownload function in the CommonController class in FEBS-Shiro before 2018-11-05. An attacker can download a file via a request of the form /common/download?filename=1.jsp&delete=false. NOTE: the software m

How urgent is CVE-2018-20437?

Priority 57/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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