CVE-2020-12869: RainbowFish PacsOne Server 6.8.4 allows XSS.

Routine

MEDIUM 5.4DOWNGRADE

CVE-2020-12869 is a medium-severity flaw (CVSS 5.4) affecting pacsone server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

RainbowFish PacsOne Server 6.8.4 allows XSS.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.6% (top 54%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-09-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: rainbowfishsoftware

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

Am I affected?

Timeline

2020-09-30 21:15 UTCPublished CVE record published
2026-06-17 02:52 UTCUpdated Record last modified

rainbowfishsoftware pacsone server DOWNGRADE

Affected: 6.8.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.8.4

1. Check installed version

apt-cache policy pacsone-server || rpm -q pacsone-server || pacsone-server --version

2. No fixed release: DOWNGRADE to a release before 6.8.4 (Debian / Ubuntu)

apt-cache madison pacsone-server sudo apt install pacsone-server=<VERSION_BEFORE_6.8.4> sudo apt-mark hold pacsone-server

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list pacsone-server sudo dnf downgrade pacsone-server-<VERSION_BEFORE_6.8.4> sudo dnf versionlock add pacsone-server

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2020-12869?

pacsone server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-12869 being exploited?

CVE-2020-12869 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-2020-12869 affect?

CVE-2020-12869 affects pacsone server. Severity is medium (CVSS 5.4). RainbowFish PacsOne Server 6.8.4 allows XSS.

How urgent is CVE-2020-12869?

Priority 35/100. Public exploit reference

Related CVEs

CVE-2020-29166 HIGH 7.5 UPGRADE PacsOne Server (PACS Server In One Box) below 7.1.1 is affected by file read/manipulation, which can result in
CVE-2020-29165 CRITICAL 9.8 UPGRADE PacsOne Server (PACS Server In One Box) below 7.1.1 is affected by incorrect access control, which can result
CVE-2020-29164 MEDIUM 6.1 UPGRADE PacsOne Server (PACS Server In One Box) below 7.1.1 is affected by cross-site scripting (XSS).
CVE-2020-29163 HIGH 8.8 UPGRADE PacsOne Server (PACS Server In One Box) below 7.1.1 is affected by SQL injection.
CVE-2020-12870 CRITICAL 9.8 DOWNGRADE RainbowFish PacsOne Server 6.8.4 allows SQL injection on the username parameter in the signup page.

References

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