PatchTheCVECVE-2019-15476: Former before 4.2.1 has XSS via a checkbox value.
41
This month
MEDIUM 6.1UPGRADE
CVE-2019-15476 is a medium-severity flaw (CVSS 6.1) affecting former. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Former before 4.2.1 has XSS via a checkbox value.
Why this priority
- Public exploit reference
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 | 0.9% (top 41%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2019-08-23 |
| Last modified | 2026-06-17 |
Publisher (CNA): MITRE · Vendor: former 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
former project former UPGRADE
Affected: < 4.2.1
Fixed in: 4.2.1
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy former || rpm -q former || former --version
2. UPGRADE to 4.2.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade former
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade former
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-2019-15476?
former: upgrade to 4.2.1. Exact commands for each OS are on this page.
Is CVE-2019-15476 being exploited?
CVE-2019-15476 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-2019-15476 affect?
CVE-2019-15476 affects former. Severity is medium (CVSS 6.1). Former before 4.2.1 has XSS via a checkbox value.
How urgent is CVE-2019-15476?
Priority 41/100. Public exploit reference