Apache has 1,058 CVEs on record. Disclosure cadence is accelerating: 694 in the last 90 days against 147 in the 90 before. The busiest recent month was October 2026 with 342. The median CVSS is 7.5 (high), with 181 rated critical. 1% have been exploited in the wild, in line with the corpus average. The median gap from publication to a KEV listing is 1186 days (8 cases). The dominant weakness classes are CWE-770 (73) and CWE-862 (51). Most affected products: Tomcat (77), airflow (68), Apache OFBiz (46).
CVEs per month
Last 12 months, by publish date
- Exploited share
- 1% vs 1% corpus
- Median CVSS
- 7.5
- Publish → KEV
- 1186 d median(8)
- Last 90 days
- 694 prev 147
Weakness classes
Products
- Tomcat 77
- airflow 68
- Apache OFBiz 46
- thrift 36
- apache/brpc 35
- traffic_server 31
Worst active — by depth score
CVE-2021-44228Critical· 10.0Log4Shell: JNDI RCE in Apache Log4j 2100CVE-2021-45046Critical· 9.0Incomplete fix for Apache Log4j vulnerability99CVE-2020-1938Critical· 9.8When using the Apache JServ Protocol (AJP), care must be taken when trusting incoming connections to Apache Tomcat99CVE-2016-8735Critical· 9.8Remote code execution is possible with Apache Tomcat before 6.0.48, 7.x before 7.0.73, 8.x before 8.0.39, 8.5.x before 8.5.7, and 9.x before 9.0.0.M12 if JmxRemoteLifecycleListener is used and an attacker can reach JMX ports97CVE-2017-12615High· 8.1When running Apache Tomcat 7.0.0 to 7.0.79 on Windows with HTTP PUTs enabled (e.g94
Apache vulnerabilities
CVEs affecting Apache, newest first. Open any entry for full detail, references, and exploit status.
1058 CVEsRSS
CVE-2026-54425High· 7.5Apache bRPC: Stack Exhaustion via Recursive HPACK Dynamic Table Size Update Decoding
Uncontrolled recursion in the HTTP/2 HPACK decoder in Apache bRPC before 1.18.0 allows remote attackers to cause denial of service by sending a crafted HTTP/2 header block containing many consecutive Dynamic Table Size Update entries. Ea…
CVE-2026-48830Critical· 9.1Apache bRPC: HTTP builtin request can mark a connection authenticated and bypass auth for later requests
Improper authentication in Apache bRPC through 1.17.0 allows a remote unauthenticated attacker to bypass authentication for protected non-builtin HTTP endpoints by first sending a builtin HTTP request on the same HTTP/1.1 keep-alive conn…
CVE-2026-54426High· 7.5Apache bRPC: Stack Exhaustion via Unbounded Recursion in Redis Reply Parser
Uncontrolled recursion in the Redis reply parser in Apache bRPC < 1.18.0 allows a remote Redis server peer to crash a bRPC Redis client process by returning a deeply nested RESP array reply. The parser recursed once for each nested array…
CVE-2026-90797High· 7.7Apache CouchDB: Pre-authentication gzip decompression bomb via POST /_session
An unlimited gzip decompression routine in chttpd in Apache CouchDB 3.5.2 and below on all platforms allows any remote client to cause a denial of service via memory exhaustion. Users are recommended to upgrade to version 3.5.3, which fi…
CVE-2026-90799Low· 1.3Apache CouchDB: Atom-table exhaustion in _changes sequences and _search bookmarks with specially crafted sequence values
Unsafe binary deserialisation in chttpd in Apache CouchDB 3.5.2 and below on all platforms allows an authenticated user to cause a denial of service via memory exhaustion. Users are recommended to upgrade to version 3.5.3, which fixes t…
CVE-2026-90798Low· 0.6Apache CouchDB: Replicator follows redirects indefinitely
A missing circuit-breaker in the replicator in Apache CouchDB 3.5.2 and below on all platforms allows the owner of a replication source or target to cause a denial of service via creating an infinite HTTP redirect loop. Users are recomm…
CVE-2026-86471Critical· 9.3Apache CouchDB: Admin credentials leading to code execution as operating system user
An unvalidated runtime configuration value in Apache CouchDB 3.5.2 and below on all platforms allows a CouchDB server admin to run arbitrary shell commands as the CouchDB operating system user. Users are recommended to upgrade to versio…
CVE-2026-90800High· 8.1Apache CouchDB: Auth bypass in prefixed _users and _replicator databases
Missing authorisation checks in chttpd in Apache CouchDB 3.5.2 and below on all platforms allows any request to read the full contents of a prefixed _user or _replicator database via an unauthorised API endpoint. The use of prefixed sy…
CVE-2026-107755Medium· 6.0Apache CouchDB: Credential Disclosure to Non-Owner Members via Object-Form Replication Endpoint URLs
Insufficient filtering of credentials in the _replicator database in Apache CouchDB 3.5.2 and below on all platforms allows an authenticated user to read replication credentials of other users’ replications, not just their own. Users ar…
CVE-2026-74049Medium· 6.1⚖ disputedApache Tomcat: Jasper JSTL <c:redirect> plug-in implementation omits page abort (SKIP_PAGE)
Execution After Redirect (EAR) vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122. The following versions were EOL at the …
CVE-2026-74048Medium· 6.5⚖ disputedApache Tomcat: OpenSSL-FFM FIPS failure does not prevent start-up
Not Failing Securely ('Failing Open') vulnerability in Apache Tomcat. If the OpenSSLLifecycleListener is configured to use FIPS mode but FIPS activation fails, Tomcat logs and error but continues to use JSSE in non-FIPS mode with the pro…
CVE-2026-80353High· 8.1⚖ disputedApache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets - Fix for CVE-2026-65183 did not address APR connector
Time-of-check time-of-use (TOCTOU) race condition vulnerability in Apache Tomcat when creating unix domain sockets for the APR/Native connector allows an unauthorised local user to access the unix domain socket. The fix for CVE-2026-6518…
CVE-2026-88041High· 7.5Apache Tomcat: HTTP/2 trailer header cross-contamination
Incomplete cleanup vulnerability in Apache Tomcat allowed an trailer information from a previous request to leak into a subsequent request. This issue affects Apache Tomcat: from 11.0.0-M23 through 11.0.26, from 10.1.27 through 10.1.6…
CVE-2026-101296Critical· 9.1Apache Tomcat: JNDIRealm bind credential validation fails open for non-GSSAPI SASL mechanisms
A missing critical step in authentication vulnerability in Apache Tomcat when the JNDI realm was configured with with a non GSSAPI SASL authentication mechanism allowed attackers to authenticate without providing the correct password. …
CVE-2026-93446High· 7.5Apache Tomcat: Possible TLS 1.3 connection failures
Incomplete cleanup vulnerability in Apache Tomcat could cause TLS 1.3 connections to fail intermittently. This issue affects Apache Tomcat: from 11.0.0-M21 through 11.0.26, from 10.1.25 through 10.1.60, from 9.0.90 through 9.0.122. …
CVE-2026-92287High· 8.1⚖ disputedApache Arrow C++, PyArrow: Parquet file-controlled KMS URL is forwarded to pluggable KmsClient that skips host validation
Pass-through of unvalidated KMS URLs to KMS clients in Apache C++ Parquet and PyArrow versions 4.0.0 to 25.0.1. This affects users who read Parquet files and configure Parquet decryption properties with a KmsClient implementation. …
CVE-2026-108088High· 7.5Apache Cocoon: Cross-user cache poisoning
** UNSUPPORTED WHEN ASSIGNED ** Use of cache containing sensitive information vulnerability in Apache Cocoon. When using the cache on a multi-user application, cached values for one user could be used when serving content for other users…
CVE-2026-108087High· 8.8Apache Cocoon: SQL Injection
** UNSUPPORTED WHEN ASSIGNED ** Improper neutralization of special elements used in an SQL command ('SQL injection') vulnerability in Apache Cocoon. This issue affects Apache Cocoon: all versions. Missing input sanitation would all…
CVE-2026-108086High· 7.5Apache Cocoon: XEE could lead to SSRF and information disclosure
** UNSUPPORTED WHEN ASSIGNED ** Improper restriction of recursive entity references in DTDs ('XML entity expansion') vulnerability in Apache Cocoon. This issue affects Apache Cocoon: all versions. XEE in the fp: form processor could l…
CVE-2026-108089High· 7.5Apache Cocoon: Unauthenticated access to diagnostic interfaces
** UNSUPPORTED WHEN ASSIGNED ** Exposure of sensitive system information to an unauthorized control sphere vulnerability in Apache Cocoon. An unauthenticated user could gain access to diagnostic interfaces, including triggering of cache,…
CVE-2026-86467High· 8.8Apache Airflow Amazon provider: AWS auth manager: SAML login CSRF logs users into the attacker's account
Apache Airflow Amazon provider: the AWS auth manager's SAML login flow does not bind the authentication response to the browser that began it. The login handler discards the AuthnRequest ID and the callback validates the assertion withou…
CVE-2026-108776Medium· 5.3Apache Kylin: tables/names SparkSQL injection
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Apache Kylin. The impact is moderate if kylin service is in query only mode, which is the default and most common mode. This issue a…
CVE-2026-67249Medium· 5.4Apache Answer: Email Code Purpose Confusion May Allow Account Takeover
A vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. A verification code issued for one email-based workflow could be accepted by another sensitive workflow because the code purpose was not properly enfo…
CVE-2026-108780Medium· 6.5Apache Kylin: Potential JDBC source configuration validation issue
Potential JDBC source configuration validation vulnerability in Apache Kylin. The impact is minor, unless the kylin backend services are open to public network. This issue affects Apache Kylin: from 4.0.0 through 5.0.4. Users are r…
CVE-2026-108766Medium· 6.5Apache Kylin: missing JDBC-config authorization
Missing authorization on jdbc source config update in Apache Kylin. Impact most to the kylin services that are directly exposed to public network, which is not common. In-house kylin deployments are mostly not impacted. This issue aff…
CVE-2026-108823High· 7.5Apache Kylin: Potential unauthenticated job metadata replacement
Exposure of Sensitive Information to an Unauthorized Actor during job manipulation in Apache Kylin. The impact is minor unless job services are exposed to public network, which is uncommon. This issue affects Apache Kylin: from 4.0.0 …
CVE-2026-108771Critical· 9.8Apache Kylin: unauthenticated broadcast API and polymorphic deserialization
Missing authentication for in-house broadcast and polymorphic deserialization vulnerability in Apache Kylin. Impact most to the kylin services that are directly exposed to public network, which is not common. In-house kylin deployments a…
CVE-2026-64943High· 8.1Apache Answer: API keys logged in plaintext during authentication
Insertion of Sensitive Information into Log File vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. Full API keys are written to application logs on every authenticated request, allowing anyone with log-…
CVE-2026-108837High· 7.5Apache Kylin: Potential computed-column resource exhaustion
Allocation of resources without limits or throttling vulnerability in Apache Kylin. Given an attacker has got project admin permission, an cache API maybe used to cause computed-column resource exhaustion. This issue affects Apache Ky…
CVE-2026-108833High· 7.5Apache Kylin: default startup profile miss security settings
Default startup profile miss security settings in Apache Kylin. Any deployment has security setting profile turned on does not impact. This issue affects Apache Kylin: from 4.0.0 through 5.0.4. Users are recommended to upgrade to v…