CVE-2026-83330: Uncontrolled Resource Consumption

Vulnerability in the Helidon product of Oracle Fusion Middleware component: WebSocket. Supported versions that are affected are 4.0.0-4.5.4. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerabilit...

CVE-2026-83480: Uncontrolled Resource Consumption

Vulnerability in the Helidon product of Oracle Fusion Middleware component: WebSocket. Supported versions that are affected are 4.0.0-4.5.4. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerabilit...

CVE-2026-69210: Loop with Unreachable Exit Condition

Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, WebSocket FrameTranscoder.bodyLength rejects extended payload lengths above Integer.MAXVALUE but permits negative 64-bit lengths. A remote client that completes a WebSocket handshake through an Ember server can send su...

CVE-2026-69209: Uncontrolled Resource Consumption

Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, The shared WebSocket decoder permits unbounded message buffering because defragmentation accumulates fragments without a limit and FrameTranscoder accepts declared lengths up to Int.MaxValue. A remote client that...

CVE-2026-91960: Integer Overflow or Wraparound

FreeRDP versions before 3.31.0 contain an integer overflow in WinPR's StreamEnsureRemainingCapacity function that allows remote attackers to cause denial of service. A malicious RD Gateway peer can send a WebSocket Ping frame with a crafted 64-bit extended payload length to trigger integer...

Fixed in Apache Tomcat 9.0.122

Low: WebSocket message smuggling with per-message-deflate CVE-2026-87022 Improper handling of length parameter allows WebSocket message smuggling when per-message-deflate is used. This was fixed with commit 959a52a2. This issue was reported to the Tomcat security team on 7 September 2026. The iss...

Fixed in Apache Tomcat 11.0.26

Low: WebSocket message smuggling with per-message-deflate CVE-2026-87022 Improper handling of length parameter allows WebSocket message smuggling when per-message-deflate is used. This was fixed with commit 4fef25fe. This issue was reported to the Tomcat security team on 7 September 2026. The iss...

Fixed in Apache Tomcat 10.1.60

Low: WebSocket message smuggling with per-message-deflate CVE-2026-87022 Improper handling of length parameter allows WebSocket message smuggling when per-message-deflate is used. This was fixed with commit 567a8551. This issue was reported to the Tomcat security team on 7 September 2026. The iss...

PT-2026-92379

Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, The shared WebSocket decoder permits unbounded message buffering because defragmentation accumulates fragments without a limit and FrameTranscoder accepts declared lengths up to Int.MaxValue. A remote client that...

PT-2026-97300

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.0-M1 through 11.0.25 Apache Tomcat versions 10.1.0-M1 through 10.1.59 Apache Tomcat versions 9.0.0.M1 through 9.0.121 Apache Tomcat versions 8.5.0 through 8.5.100 Apache Tomcat versions 7.0.56 through 7.0.109...

PT-2026-97290

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.0-M5 through 11.0.25 Apache Tomcat versions 10.1.8 through 10.1.59 Apache Tomcat versions 9.0.74 through 9.0.121 Apache Tomcat versions 8.5.88 through 8.5.100 Description An uncontrolled resource consumption issue...

PT-2026-97294

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.0-M1 through 11.0.25 Apache Tomcat versions 10.1.0-M1 through 10.1.59 Apache Tomcat versions 9.0.0.M1 through 9.0.121 Apache Tomcat versions 8.5.0 through 8.5.100 Apache Tomcat versions 7.0.43 through 7.0.109...

SUSE SLES12: tomcat / tomcat-admin-webapps / tomcat-docs-webapp / etc (SUSE-SU-2026:4126-1)

The remote SUSE Linux SLES12 / SLESSAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4126-1 advisory. - CVE-2026-65182: Apache Tomcat: Bypass longest prefix security constraint bsc1276893. - CVE-2026-65183: Apache Tomcat: TOCTOU when...

PT-2026-92079

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.31.0 Description An integer overflow exists in the Stream EnsureRemainingCapacity function within WinPR. A remote attacker acting as a malicious RD Gateway peer can send a WebSocket Ping frame containing a crafted...

PT-2026-92852

Name of the Vulnerable Software and Affected Versions Oracle Fusion Middleware Helidon versions 4.0.0 through 4.5.4 Description A flaw in the WebSocket component allows an unauthenticated attacker with network access via HTTP to compromise the system. This can lead to a hang or a frequently...

SUSE SLES15: tomcat11 / tomcat11-admin-webapps / tomcat11-el-6_0-api / etc (SUSE-SU-2026:4114-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4114-1 advisory. - CVE-2026-65182: Apache Tomcat: Bypass longest prefix security constraint bsc1276893. - CVE-2026-65183: Apache Tomcat: TOCTOU when...

SUSE SLES15 Security Update : python-aiohttp (SUSE-SU-2026:4113-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4113-1 advisory. - CVE-2026-59881: excessive resource consumption due to WebSocket client accepting compressed frames without negotiated...

CVE-2026-18251

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to obtain sensitive information due to improper validation of the WebSocket origin...

CVE-2026-18251

IBM i (versions 7.3, 7.4, 7.5, and 7.6 ) is affected by a vulnerability in Navigator for i where improper validation of the WebSocket origin allows a remote, unauthenticated attacker to obtain sensitive information. The underlying cause is classified as CWE-1385: Missing Origin Validation in WebS...

CVE-2026-18251 IBM i is Affected By Multiple Vulnerabilities in Navigator for i and Digital Certificate Manager for i.

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to obtain sensitive information due to improper validation of the WebSocket origin...