H2
Product
H2o
On CISA KEVExploited in the wild
17
CVEs
1
On KEV
9.8
Max CVSS
0
New 30D
Severity mix
Critical 2High 10Medium 4Low 1
Watch
Add H2o to your stack to get only the CVEs that touch what you run.
| CVE | CVSS | Published | Summary · affected versions |
|---|---|---|---|
| CVE-2023-44487 In wildKEV | 7.5 | Oct 10 | HTTP/2 Rapid Reset Attack Vulnerability Affected: before 2023-10-10 |
| CVE-2018-0608 | 9.8 | Jun 26 | Buffer overflow in H2O version 2.2.4 and earlier allows remote attackers to execute arbitrary code or cause a denial of service (DoS) via unspecified vectors Affected: through 2.2.4 |
| CVE-2016-7835 | 9.1 | Jun 9 | Use-after-free vulnerability in H2O allows remote attackers to cause a denial-of-service (DoS) or obtain server certificate private keys and possibly other information Affected: through 2.0.4 |
| CVE-2023-30847 | 8.2 | Apr 27 | H2O is an HTTP server Affected: through 2.2.6; 2.3.0; 2.3.0 |
| CVE-2024-45403 | 7.5 | Oct 11 | h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3 Affected: 2024-06-18 before 2024-09-04 |
| CVE-2024-45397 | 7.5 | Oct 11 | h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3 Affected: before 2024-10-10 |
| CVE-2023-50247 | 7.5 | Dec 12 | h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3 Affected: through 2.2.6; 2.3.0; 2.3.0 |
| CVE-2017-10908 | 7.5 | Dec 22 | H2O version 2.2.3 and earlier allows remote attackers to cause a denial of service in the server via specially crafted HTTP/2 header Affected: through 2.2.3 |
| CVE-2017-10869 | 7.5 | Dec 22 | Buffer overflow in H2O version 2.2.2 and earlier allows remote attackers to cause a denial-of-service in the server via unspecified vectors Affected: through 2.2.2 |
| CVE-2017-10868 | 7.5 | Dec 22 | H2O version 2.2.2 and earlier allows remote attackers to cause a denial of service in the server via specially crafted HTTP/1 header Affected: before 2.2.3 |
| CVE-2016-4864 | 7.5 | May 12 | H2O versions 2.0.3 and earlier and 2.1.0-beta2 and earlier allows remote attackers to cause a denial-of-service (DoS) via format string specifiers in a template file via fastcgi,… Affected: 2.0.0 through 2.0.3; 2.1.0; 2.1.0 |
| CVE-2016-4817 | 7.5 | Jun 19 | lib/http2/connection.c in H2O before 1.7.3 and 2.x before 2.0.0-beta5 mishandles HTTP/2 disconnection, which allows remote attackers to cause a denial of service (use-after-free… Affected: through 1.7.2; through 2.0.0 |
| CVE-2023-41337 | 6.7 | Dec 12 | h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3 Affected: through 2.2.6; 2.3.0; 2.3.0 |
| CVE-2017-10872 | 6.5 | Dec 22 | H2O version 2.2.3 and earlier allows remote attackers to cause a denial of service in the server via unspecified vectors Affected: through 2.2.3 |
| CVE-2021-43848 | 5.9 | Feb 1 | h2o is an open source http server Affected: before 2021-12-20 |
| CVE-2024-25622 | 4.3 | Oct 11 | h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3 Affected: through 2024-02-11 |
| CVE-2016-1133 | 3.7 | Jan 16 | CRLF injection vulnerability in the on_req function in lib/handler/redirect.c in H2O before 1.6.2 and 1.7.x before 1.7.0-beta3 allows remote attackers to inject arbitrary HTTP… Affected: through 1.6.1; 1.7.0 |
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