PatchTheCVECVE-2010-4662: PmWiki before 2.2.21 has XSS.
36
Routine
MEDIUM 6.1UPGRADE
CVE-2010-4662 is a medium-severity flaw (CVSS 6.1) affecting pmwiki. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
PmWiki before 2.2.21 has XSS.
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 | 0.8% (top 42%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2020-02-05 |
| Last modified | 2026-06-16 |
Publisher (CNA): Red Hat, Inc. · Vendor: pmwiki
Last updated 2026-06-16 · 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
pmwiki pmwiki UPGRADE
Affected: < 2.2.21
Fixed in: 2.2.21
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy pmwiki || rpm -q pmwiki || pmwiki --version
2. UPGRADE to 2.2.21 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade pmwiki
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade pmwiki
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-2010-4662?
pmwiki: upgrade to 2.2.21. Exact commands for each OS are on this page.
Is CVE-2010-4662 being exploited?
CVE-2010-4662 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-2010-4662 affect?
CVE-2010-4662 affects pmwiki. Severity is medium (CVSS 6.1). PmWiki before 2.2.21 has XSS.
How urgent is CVE-2010-4662?
Priority 36/100. No elevated risk signals yet.