CVE Database and Vulnerability Search
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| Vulnerability | Title and context | CVSS | EPSS | PoCs | Signals | STIX action |
|---|---|---|---|---|---|---|
CVE-2026-49975HIGH | Apache HTTP Server: mod_http2 denial of serviceMemory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's mod_http leads to denial of service via malicious HTTP requests. This issue affects Apache HTTP Server: from 2.4.17 through 2.4.67. | CVSS7.5v3.1 | EPSS28% | PoCs11 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2026-28780CRITICAL | Apache HTTP Server: buffer overflow in mod_proxy_ajp via ajp_msg_check_header()Heap-based Buffer Overflow vulnerability in mod_proxy_ajp of Apache HTTP Server. If mod_proxy_ajp connects to a malicious AJP server this AJP server can send a malicious AJP message back to mod_proxy_ajp and cause it to write 4 attacker controlled bytes after the end of a heap based buffer. This issue affects Apache HTTP Server: through 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue. | CVSS9.8v3.1 | EPSS1.38% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2026-27135HIGH | nghttp2 Denial of service: Assertion failure due to the missing state validationnghttp2 is an implementation of the Hypertext Transfer Protocol version 2 in C. Prior to version 1.68.1, the nghttp2 library stops reading the incoming data when user facing public API `nghttp2_session_terminate_session` or `nghttp2_session_terminate_session2` is called by the application. They might be called internally by the library when it detects the situation that is subject to connection error. Due to the missing internal state validation, the library keeps reading the rest of the data af… CWE-617Mar 18, 2026 | CVSS7.5v3.1 | EPSS0.775% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
CVE-2023-6710MEDIUM | Mod_cluster/mod_proxy_cluster: stored cross site scriptingA flaw was found in the mod_proxy_cluster in the Apache server. This issue may allow a malicious user to add a script in the 'alias' parameter in the URL to trigger the stored cross-site scripting (XSS) vulnerability. By adding a script on the alias parameter on the URL, it adds a new virtual host and adds the script to the cluster-manager page. CWE-79Dec 12, 2023 | CVSS5.4v3.1 | EPSS2.24% | PoCs3 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |