CVE-2021-41816
CriticalAdvisory
Published 2 Dec 2021In the index since 6 Sept 2026
- Severity
- Critical
- worst across findings
- CVSS
- 9.8
- base score, highest
- EPSS
- 0.048
- 91st percentile
- CISA KEV
- Not listed
- no confirmed exploitation
- Charts affected
- 12
- of 17,781 indexed, latest versions
- Container images
- 17
- deployed by those charts
- Fix available
- 2 of 2
- affected packages
Buffer overrun in CGI.escape_html
Carried by container images the latest versions of 12 of 17,781 indexed charts deploy, on 17 images.
| Affected package | Affected versions | Fixed in | Images |
|---|---|---|---|
| cgigem | 0.1.0, 0.2.0 | 0.1.0.1, 0.2.1 | 17 |
| ruby2.7deb | 2.7.0-5ubuntu1.4, 2.7.0-5ubuntu1.5 | 2.7.0-5ubuntu1.6 | 5 |
- OSV records
- GHSA-5cqm-crxm-6qpvUBUNTU-CVE-2021-41816
- Also known as
- USN-5235-1
Charts affected
12 by stars
| Chart | Latest | Affected images | Radar Score |
|---|---|---|---|
| puppetserverpuppetserver | 9.5.2 | 1 of 5See more | 14,184 |
| gollumgeek-cookbookVerified publisher | 3.4.2 | 1 of 3See more | 4,629 |
| docker-registry-browsergmelilloVerified publisher | 0.1.2 | 1 of 1See more | 4,108 |
| openprojecthomeenterpriseinc | 0.5.0 | 1 of 1See more | 6,810 |
| opennebulakvaps | 2.1.1 | 5 of 9See more | 113,791 |
| bookinfobasictechno | 0.1.0 | 1 of 6See more | 20,671 |
| puppetservercamptocamp3 | 1.0.1 | 1 of 2See more | 5,886 |
| yelbfairwinds-incubator | 0.1.1 | 1 of 5See more | 5,089 |
| icinga2g0dscookie | 0.2.0 | 1 of 1See more | 4,428 |
| docker-registry-browsergtaylor | 0.4.4 | 1 of 1See more | 3,564 |
| kongwallarmVerified publisher | 4.6.3 | 2 of 7See more | 11,405 |
| kong-previewwallarmVerified publisher | 4.2.3 | 1 of 5See more | 2,905 |
Container images carrying it
17 by charts deploying them
A fixed version is listed for 2 of the 2 affected packages.
| Container image | Digest | Package | Fixed in | Used by |
|---|---|---|---|---|
| gollumorg/ | 7cd5305a3cf7 | cgi | 0.1.0.1 | 1 |
| istio/ | 2b081e3c86dd | cgi | 0.1.0.1 | 1 |
| klausmeyer/ | 430a440d95af | cgi | 0.1.0.1 | 1 |
| klausmeyer/ | bdc4c6b8595b | cgi | 0.2.1 | 1 |
| openproject/ | 734743d11094 | cgi | 0.1.0.1 | 1 |
| wallarm/ | 95ea2632326c | cgi | 0.1.0.1 | 1 |
| wallarm/ | aecdb35c4def | cgi | 0.1.0.1 | 1 |
| wallarm/ | ea9608c82e40 | cgi | 0.1.0.1 | 1 |
| ghcr.io/ | da81246ccfc9 | cgi | 0.1.0.1 | 1 |
| ghcr.io/ | e28e0e7de11b | cgi ruby2.7 | 0.1.0.1 2.7.0-5ubuntu1.6 | 1 |
| ghcr.io/ | 01563adc95fd | cgi ruby2.7 | 0.1.0.1 2.7.0-5ubuntu1.6 | 1 |
| ghcr.io/ | 2b92df1143b9 | cgi ruby2.7 | 0.1.0.1 2.7.0-5ubuntu1.6 | 1 |
| ghcr.io/ | 600221f0f43f | cgi ruby2.7 | 0.1.0.1 2.7.0-5ubuntu1.6 | 1 |
| ghcr.io/ | a85e03d8bc1d | cgi ruby2.7 | 0.1.0.1 2.7.0-5ubuntu1.6 | 1 |
| ghcr.io/ | 916746209ac5 | cgi | 0.2.1 | 1 |
| ghcr.io/ | 63873f3f698e | cgi | 0.2.1 | 1 |
| quay.io/ | fae21f06131f | cgi | 0.1.0.1 | 1 |