Apache vulnerabilities
- Apache has 1,763 CVE records published between 28 Oct 2023 and 28 Oct 2026, ranking #9 of 420 vendors on this site by that count.
- Of the 1,672 with a CVSS score, 1,029 (61.5%) are rated critical or high; 91 (5.2% of all) have no CVSS score.
- 41 vulnerabilities attributed to Apache are listed in CISA's Known Exploited Vulnerabilities (KEV) catalog; the most recent, CVE-2016-3081, was added on 8 Oct 2026.
- 8 of them (19.5%) are marked as known to be used in ransomware campaigns.
- For the 41 KEV entries with a published CVE record, the median time from CVE publication to KEV listing is 503 days.
Records are attributed to Apache from the vendor named in the source records. About the data.
CVE records per year
Show data as a table
| Year | CVE records |
|---|---|
| 2017 | 161 |
| 2018 | 168 |
| 2019 | 139 |
| 2020 | 151 |
| 2021 | 186 |
| 2022 | 220 |
| 2023 | 260 |
| 2024 | 263 |
| 2025 | 219 |
| 2026 | 1,230 |
2026 is partial (through 28 Oct 2026), shown in a lighter bar.
| Year | Records | Critical | High | Critical or high | Not scored |
|---|---|---|---|---|---|
| 2026 | 1,230 | 225 | 516 | 63.4% | 5% |
| 2025 | 219 | 30 | 90 | 54.8% | 0% |
| 2024 | 263 | 55 | 101 | 59.3% | 0% |
| 2023 | 260 | 45 | 79 | 70.1% | 31.9% |
| 2022 | 220 | 24 | 28 | 64.2% | 63.2% |
| 2021 | 186 | 7 | 2 | 69.2% | 93% |
| 2020 | 151 | 3 | 2 | 71.4% | 95.4% |
| 2019 | 139 | 1 | 3 | 80% | 96.4% |
| 2018 | 168 | 0 | 4 | 100% | 97.6% |
| 2017 | 161 | 3 | 5 | 100% | 95% |
| Before 2017 | 7 | ||||
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
Exploited vulnerabilities in CISA's KEV catalog
| CVE | Product | Name | Added | Ransomware |
|---|---|---|---|---|
| CVE-2016-3081 | Struts | Apache Struts Command Injection Vulnerability | 2026-10-08 | Unknown |
| CVE-2026-34486 | Tomcat | Apache Tomcat Missing Encryption of Sensitive Data Vulnerability | 2026-08-04 | Unknown |
| CVE-2026-34197 | ActiveMQ | Apache ActiveMQ Improper Input Validation Vulnerability | 2026-04-16 | Unknown |
| CVE-2024-38475 | HTTP Server | Apache HTTP Server Improper Escaping of Output Vulnerability | 2025-05-01 | Unknown |
| CVE-2025-24813 | Tomcat | Apache Tomcat Path Equivalence Vulnerability | 2025-04-01 | Unknown |
| CVE-2024-45195 | OFBiz | Apache OFBiz Forced Browsing Vulnerability | 2025-02-04 | Unknown |
| CVE-2024-27348 | HugeGraph-Server | Apache HugeGraph-Server Improper Access Control Vulnerability | 2024-09-18 | Unknown |
| CVE-2024-38856 | OFBiz | Apache OFBiz Incorrect Authorization Vulnerability | 2024-08-27 | Unknown |
| CVE-2024-32113 | OFBiz | Apache OFBiz Path Traversal Vulnerability | 2024-08-07 | Unknown |
| CVE-2020-17519 | Flink | Apache Flink Improper Access Control Vulnerability | 2024-05-23 | Unknown |
| CVE-2023-27524 | Superset | Apache Superset Insecure Default Initialization of Resource Vulnerability | 2024-01-08 | Unknown |
| CVE-2023-46604 | ActiveMQ | Apache ActiveMQ Deserialization of Untrusted Data Vulnerability | 2023-11-02 | Known |
| CVE-2023-33246 | RocketMQ | Apache RocketMQ Command Execution Vulnerability | 2023-09-06 | Unknown |
| CVE-2016-8735 | Tomcat | Apache Tomcat Remote Code Execution Vulnerability | 2023-05-12 | Unknown |
| CVE-2021-45046 | Log4j2 | Apache Log4j2 Deserialization of Untrusted Data Vulnerability | 2023-05-01 | Known |
| CVE-2022-33891 | Spark | Apache Spark Command Injection Vulnerability | 2023-03-07 | Unknown |
| CVE-2022-24112 | APISIX | Apache APISIX Authentication Bypass Vulnerability | 2022-08-25 | Unknown |
| CVE-2022-24706 | CouchDB | Apache CouchDB Insecure Default Initialization of Resource Vulnerability | 2022-08-25 | Unknown |
| CVE-2013-2251 | Struts | Apache Struts Improper Input Validation Vulnerability | 2022-03-25 | Unknown |
| CVE-2017-12615 | Tomcat | Apache Tomcat on Windows Remote Code Execution Vulnerability | 2022-03-25 | Known |
| CVE-2017-12617 | Tomcat | Apache Tomcat Remote Code Execution Vulnerability | 2022-03-25 | Unknown |
| CVE-2020-1956 | Kylin | Apache Kylin OS Command Injection Vulnerability | 2022-03-25 | Unknown |
| CVE-2020-1938 | Tomcat | Apache Tomcat Improper Privilege Management Vulnerability | 2022-03-03 | Unknown |
| CVE-2016-3088 | ActiveMQ | Apache ActiveMQ Improper Input Validation Vulnerability | 2022-02-10 | Unknown |
| CVE-2017-9791 | Struts 1 | Apache Struts 1 Improper Input Validation Vulnerability | 2022-02-10 | Unknown |
| CVE-2006-1547 | Struts 1 | Apache Struts 1 ActionForm Denial-of-Service Vulnerability | 2022-01-21 | Unknown |
| CVE-2012-0391 | Struts 2 | Apache Struts 2 Improper Input Validation Vulnerability | 2022-01-21 | Unknown |
| CVE-2020-11978 | Airflow | Apache Airflow Command Injection | 2022-01-18 | Unknown |
| CVE-2020-13927 | Airflow's Experimental API | Apache Airflow's Experimental API Authentication Bypass | 2022-01-18 | Unknown |
| CVE-2019-0193 | Solr | Apache Solr DataImportHandler Code Injection Vulnerability | 2021-12-10 | Unknown |
| CVE-2021-44228 | Log4j2 | Apache Log4j2 Remote Code Execution Vulnerability | 2021-12-10 | Known |
| CVE-2021-40438 | Apache | Apache HTTP Server-Side Request Forgery (SSRF) | 2021-12-01 | Known |
| CVE-2016-4437 | Shiro | Apache Shiro Code Execution Vulnerability | 2021-11-03 | Unknown |
| CVE-2017-5638 | Struts | Apache Struts Remote Code Execution Vulnerability | 2021-11-03 | Known |
| CVE-2017-9805 | Struts | Apache Struts Deserialization of Untrusted Data Vulnerability | 2021-11-03 | Unknown |
| CVE-2018-11776 | Struts | Apache Struts Remote Code Execution Vulnerability | 2021-11-03 | Unknown |
| CVE-2019-0211 | HTTP Server | Apache HTTP Server Privilege Escalation Vulnerability | 2021-11-03 | Unknown |
| CVE-2019-17558 | Solr | Apache Solr VelocityResponseWriter Plug-In Remote Code Execution Vulnerability | 2021-11-03 | Unknown |
| CVE-2020-17530 | Struts | Apache Struts Remote Code Execution Vulnerability | 2021-11-03 | Unknown |
| CVE-2021-41773 | HTTP Server | Apache HTTP Server Path Traversal Vulnerability | 2021-11-03 | Known |
| CVE-2021-42013 | HTTP Server | Apache HTTP Server Path Traversal Vulnerability | 2021-11-03 | Known |
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.27, as of 27 Oct 2026. About the data.
Highest exploit-prediction scores (EPSS)
EPSS estimates the probability that a vulnerability is exploited in the next 30 days. These are the 10 highest-scoring Apache records today.
| CVE | EPSS | Percentile | Severity | In KEV |
|---|---|---|---|---|
| CVE-2017-5638 | 100% | 100% | Critical | Yes |
| CVE-2021-40438 | 100% | 100% | Critical | Yes |
| CVE-2021-44228 | 100% | 100% | Critical | Yes |
| CVE-2021-45105 | 100% | 100% | Medium | No |
| CVE-2013-2251 | 100% | 100% | Critical | Yes |
| CVE-2018-11776 | 100% | 100% | High | Yes |
| CVE-2021-41773 | 100% | 100% | High | Yes |
| CVE-2023-46604 | 100% | 100% | Critical | Yes |
| CVE-2024-45195 | 100% | 100% | Critical | Yes |
| CVE-2021-45046 | 100% | 100% | Critical | Yes |
Source: FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.27, as of 27 Oct 2026. About the data.
Related vendors
Vendors named on the same CVE records as Apache.
- Red Hat (2 shared records)