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CVE-2026-111808

Apache Traffic Server: HTTP/2 DATA frame padding underflow lets a client trigger backend worker-pool exhaustion

Apache Traffic Server can be used to exhaust an HTTP/1.1 origin's worker pool via a malformed padded HTTP/2 DATA frame. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0. Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.

CVSS 4.0 · 7.7 High EPSS < 1% KEV · Not listed
CVE-2026-111805

Apache Traffic Server: HTTP/2 Content-Length truncation lets a client trigger backend worker-pool exhaustion

Apache Traffic Server can be used to exhaust an HTTP/1.1 origin's worker pool via a truncated HTTP/2 Content-Length value. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0. Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.

CVSS 4.0 · 7.7 High EPSS < 1% KEV · Not listed
CVE-2026-111804

Apache Traffic Server: wasm plugin has a use-after-free and forwards unvalidated guest metric IDs

Apache Traffic Server's experimental wasm plugin has a use-after-free in its transaction-close handler and forwards unvalidated guest-supplied metric IDs to the internal stats API. This issue affects Apache Traffic Server: from 10.0.0 through 10.1.4, 10.2.0. Users are recommended to upgrade to version 10.1.5 or 10.2.1, which fix the issue.

CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed
CVE-2026-64610

Apache Kylin: Redis unsafe Java deserialization

Deserialization of Untrusted Data vulnerability in Apache Kylin. Unsafe Java deserialization could happen from a broken external cache service. This issue affects Apache Kylin: from 4 through 5.0.4. Users are recommended to upgrade to version 5.0.5, which fixes the issue.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
CVE-2026-111815

Apache Traffic Server: TLS session ticket resumption bypasses per-SNI verify_client STRICT enforcement

Apache Traffic Server can resume a TLS session across SNI virtual hosts without re-verifying a client certificate required by the resumed host's verify_client STRICT policy. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0. Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.

CVSS 4.0 · 7.8 High EPSS < 1% KEV · Not listed
CVE-2026-111814

Apache Traffic Server: Default server_session_sharing.match omits MASK_CERT, allowing pooled mTLS identity confusion at the origin

Apache Traffic Server's default outbound session-sharing policy can reuse a pooled TLS session authenticated with one client certificate for a transaction configured to present a different one. This issue affects Apache Traffic Server: from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0. Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.

CVSS 4.0 · 7.8 High EPSS < 1% KEV · Not listed
CVE-2026-111812

Apache Traffic Server: origin_server_auth signs client-controlled AWS headers under the proxy's IAM credentials

Apache Traffic Server's origin_server_auth plugin lets a client force signing of attacker-chosen AWS request headers under the proxy's own credentials. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0. Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.

CVSS 4.0 · 7 High EPSS < 1% KEV · Not listed
CVE-2026-64959

Apache Kylin: Missing authentication on certain cache API endpoints

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'), Missing Authentication for Critical Function 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 are mostly not impacted. This issue affects Apache Kylin: from 5 through 5.0.4. Certain backend cache API misses required authentication and can cause execution of injected SQL. Users are recommended to upgrade to version 5.0.5, which fixes the issue.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
CVE-2026-71563

Apache Answer: MCP Answer Retrieval Exposes Content from Non-Public Questions

Missing Authorization vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. An authorization flaw in the MCP answer retrieval tool allows holders of a global API key to access answer content associated with hidden, deleted, or pending-review questions. Users are recommended to upgrade to version 2.0.3, which fixes the issue.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
CVE-2026-108743

Apache Kylin: spark job OS command injection

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') 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 are mostly not impacted. This issue affects Apache Kylin: from 4.0.4 through 5.0.4. Users are recommended to upgrade to version 5.0.5, which fixes the issue.

CVSS 3.1 · 8.8 High EPSS 1.4% KEV · Not listed
CVE-2026-101356

Apache Tomcat: HTTP/2 request/response mix-up after error during async processing

Incorrect object recycling and re-use vulnerability in Apache Tomcat affecting HTTP/2 processing of asynchronous servlets can trigger request and/or response mix-up between users. This issue affects Apache Tomcat: from 11.0.22 through 11.0.26, from 10.1.55 through 10.1.60, from 9.0.118 through 9.0.122. Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fixes the issue.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Products
CVE-2026-103119

Apache Tomcat: AJP response mix-up

Buffer under-read vulnerability in Apache Tomcat meant that a large non-blocking write could result in the response body being split between the current request and the next request received on that connection leading most likely to failure of the second request and possibly leakage of data from the first response to the second. This issue affects Apache Tomcat: from 11.0.0-M25 through 11.0.26. Users are recommended to upgrade to version 11.0.27, which fixes the issue.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Products
CVE-2026-69080

Apache Kylin: Broken Access Control in QuerySQLBlacklistController

Exposure of SQL Black List to an Unauthorized Actor vulnerability in Apache Kylin. This issue affects Apache Kylin: from 4 through 5.0.4. Users are recommended to upgrade to version 5.0.5, which fixes the issue.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
CVE-2026-69077

Apache Kylin: JobController allows unauthorized cross-project manipulation

Exposure of unauthorized cross-project job manipulation 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 are mostly not impacted. This issue affects Apache Kylin: from 4 through 5.0.4. Users are recommended to upgrade to version 5.0.5, which fixes the issue.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
CVE-2026-64943

Apache 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-read access to recover and replay active bearer credentials. Users are recommended to upgrade to version 2.0.3, which fixes the issue.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
CVE-2026-108709

Apache Kylin: Unauthenticated Metadata Broadcast (inside in-house network)

Authentication bypass within in-house network 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 affects Apache Kylin: from 4.0.4 through 5.0.4. Users are recommended to upgrade to version 5.0.5, which fixes the issue.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
CVE-2026-68573

Apache Kylin: Unauthenticated Metastore Cleanup

Improper Authentication vulnerability in Apache Kylin. Unauthenticated user may access to system cleanup actions. 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 affects Apache Kylin: from 4 through 5.0.4. Users are recommended to upgrade to version 5.0.5, which fixes the issue.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
CVE-2026-68572

Apache Kylin: Unauthorized SQL execution to Spark SQL env

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Kylin. This issue affects Apache Kylin: from 4 through 5.0.4. Users are recommended to upgrade to version 5.0.5, which fixes the issue.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
CVE-2026-69076

Apache Kylin: Unauthorized cross-project job discard

Exposure of Job Discard to an Unauthorized Actor 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 are mostly not impacted. This issue affects Apache Kylin: from 4 through 5.0.4. Users are recommended to upgrade to version 5.0.5, which fixes the issue.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
CVE-2026-63619

Apache Kylin: Missing authorization and path-confinement on system meta dump

Missing Authorization vulnerability in Apache Kylin. A backend metadata dump API misses the enough authorization and the path-confinement. 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 affects Apache Kylin: from 4 through 5.0.4. Users are recommended to upgrade to version 5.0.5, which fixes the issue.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed