PatchTheCVECVE-2020-12683: Katyshop2 before 2.12 has multiple stored XSS issues.
30
Routine
MEDIUM 5.4UPGRADE
CVE-2020-12683 is a medium-severity flaw (CVSS 5.4) affecting katyshop2. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Katyshop2 before 2.12 has multiple stored XSS issues.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
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 | 2020-05-07 |
| Last modified | 2026-06-17 |
Publisher (CNA): MITRE · Vendor: katyshop2 project
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
katyshop2 project katyshop2 UPGRADE
Affected: < 2.12
Fixed in: 2.12
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy katyshop2 || rpm -q katyshop2 || katyshop2 --version
2. UPGRADE to 2.12 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade katyshop2
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade katyshop2
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.
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-2020-12683?
katyshop2: upgrade to 2.12. Exact commands for each OS are on this page.
Is CVE-2020-12683 being exploited?
CVE-2020-12683 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-2020-12683 affect?
CVE-2020-12683 affects katyshop2. Severity is medium (CVSS 5.4). Katyshop2 before 2.12 has multiple stored XSS issues.
How urgent is CVE-2020-12683?
Priority 30/100. No elevated risk signals yet.