CVE-2020-3939: SysJust Syuan-Gu-Da-Shih, versions before 20191223, contain vulnerability of Cross-Site Scripting(XSS), person

Q: How do I fix CVE-2020-3939?

syuan-gu-da-shin: upgrade to 20191223. Exact commands for each OS are on this page.

Q: Is CVE-2020-3939 being exploited?

CVE-2020-3939 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-2020-3939 affect?

CVE-2020-3939 affects syuan-gu-da-shin. Severity is medium (CVSS 6.1). SysJust Syuan-Gu-Da-Shih, versions before 20191223, contain vulnerability of Cross-Site Scripting(XSS), personal information may be leaked to attackers via the vulnerability.

Q: How urgent is CVE-2020-3939?

Priority 35/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2020-3939 is a medium-severity flaw (CVSS 6.1) affecting syuan-gu-da-shin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SysJust Syuan-Gu-Da-Shih, versions before 20191223, contain vulnerability of Cross-Site Scripting(XSS), personal information may be leaked to attackers via the vulnerability.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-02-04
Last modified	2026-06-17

Publisher (CNA): TWCERT/CC · Vendor: sysjust

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

Am I affected?

Timeline

2020-02-04 05:15 UTCPublished CVE record published
2026-06-17 03:19 UTCUpdated Record last modified

sysjust syuan-gu-da-shin UPGRADE

Affected: < 20191223

Fixed in: 20191223

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy syuan-gu-da-shin || rpm -q syuan-gu-da-shin || syuan-gu-da-shin --version

2. UPGRADE to 20191223 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade syuan-gu-da-shin

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade syuan-gu-da-shin

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-2020-3939?

syuan-gu-da-shin: upgrade to 20191223. Exact commands for each OS are on this page.

Is CVE-2020-3939 being exploited?

CVE-2020-3939 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-2020-3939 affect?

CVE-2020-3939 affects syuan-gu-da-shin. Severity is medium (CVSS 6.1). SysJust Syuan-Gu-Da-Shih, versions before 20191223, contain vulnerability of Cross-Site Scripting(XSS), personal information may be leaked to attackers via the vulnerability.

How urgent is CVE-2020-3939?

Priority 35/100. No elevated risk signals yet.

Related CVEs

CVE-2020-3938 CRITICAL 9.8 UPGRADE SysJust Syuan-Gu-Da-Shih, versions before 20191223, contain vulnerability of Request Forgery, allowing attacke
CVE-2020-3937 HIGH 8.1 UPGRADE SQL Injection in SysJust Syuan-Gu-Da-Shih, versions before 20191223, allowing attackers to perform unwanted SQ

References

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