CVE-2026-8037

CVE: Progress LoadMaster Command Injection Vulnerability: Progress LoadMaster contains a command injection vulnerability that allows an un-authenticated attacker to execute arbitrary commands on the LoadMaster appliance by exploiting unsanitized input in multiple command endpoints.
CWE: CWE-77
Published: Progress | LoadMaster
Link: https://www.cve.org/CVERecord?id=CVE-2026-8037

Threat Analysis (Progress LoadMaster Command Injection Vulnerability: Progress LoadMaster contains a command injection vulnerability that allows an un-authenticated attacker to execute arbitrary commands on the LoadMaster appliance by exploiting unsanitized input in multiple command endpoints.)

  1. Impact: The command‑injection flaw lets an unauthenticated actor run arbitrary commands on the LoadMaster appliance, compromising confidentiality (data exfiltration), integrity (configuration tampering), and availability (service disruption or complete takeover).

  2. Affected Components & Attack Surface: The vulnerability resides in the Progress LoadMaster appliance’s command‑execution endpoints (e.g., /api/command). It is exposed via the public HTTP web interface; no authentication or network segmentation is currently enforced.

  3. Exploitation Prerequisites: An attacker with internet access can send an un‑sanitized HTTP request to a command endpoint containing a payload that injects shell‑style code (e.g., ?cmd=; rm -rf /). No special privileges, patches, or user accounts are required.

  4. Detection Ideas & Indicators: Look for HTTP error logs or unexpected command output, monitor for ATT&CK T1059.001 (Command‑and‑Control: Command Injection), and watch for the CVE identifier in security feeds. Repeated injection attempts may trigger rate‑limit warnings.

  5. Mitigations & Workarounds: Deploy the official Progress patch (released per CVE‑2026‑8037), disable or restrict the command endpoint, enforce strict input validation/whitelisting, and isolate the appliance on a segmented network.

  6. Verification Steps: Send a crafted request to the command endpoint; the appliance should execute the injected command and return output. Confirm the command runs by checking system logs or the appliance’s status page. Verify the fix by confirming the patch version and that the endpoint is disabled.

  7. Attack‑Path Sequence:

sequenceDiagram
    Attacker->>LoadMaster: "HTTP GET /api/command?cmd=/"'
    LoadMaster->>Appliance: Execute injected command
    Appliance->>Attacker: Command output (e.g., success/failure)
    Attacker<<->>User: Data exfiltration or service disruption

CVE-2026-63077

CVE: JetBrains TeamCity Deserialization of Untrusted Data Vulnerability: JetBrains TeamCity contains a deserialization of untrusted data vulnerability that could allow unauthenticated remote code execution via the agent polling protocol.
CWE: CWE-502
Published: JetBrains | TeamCity
Link: https://www.cve.org/CVERecord?id=CVE-2026-63077

Threat Analysis (JetBrains TeamCity Deserialization of Untrusted Data Vulnerability: JetBrains TeamCity contains a deserialization of untrusted data vulnerability that could allow unauthenticated remote code execution via the agent polling protocol.)

  1. Impact: A deserialization vulnerability in the TeamCity agent polling protocol enables unauthenticated remote code execution, compromising confidentiality, integrity, and availability of the host and any connected resources.

  2. Affected Components & Attack Surface: The vulnerability resides in any TeamCity installation that uses the agent polling feature (HTTP/HTTPS endpoints). The attack surface is the remote network exposure of the polling API; no local privilege escalation is required.

  3. Exploitation Prerequisites: An attacker must craft a malicious serialized payload and send it to the polling endpoint. No authentication, elevated privileges, or special configuration are needed beyond the default exposed service.

  4. Detection Ideas & Indicators: Look for sudden outbound connections from agents, spikes in CPU/network I/O, deserialization error logs, and ATT&CK T1059.004 (Command and Scripting Interpreter) events. CVE‑2026‑63077 ID may appear in security alerts.

  5. Mitigations & Workarounds: Deploy the official JetBrains patch (e.g., 2026.01.01+), disable agent polling if not required, enforce TLS, and restrict network access to trusted IPs only.

  6. Verification Steps: Send a crafted JSON payload to the polling endpoint on an unpatched system to trigger RCE, confirming exploitation. On a patched system, repeat the test and ensure no shellcode execution occurs.

  7. Attack‑Path Sequence:

sequenceDiagram
    Attacker->>TeamCity: Send malicious serialized payload to polling endpoint
    TeamCity->>Agent: Deserialize untrusted data
    Agent->>Agent: Executes arbitrary code
    Agent->>Attacker: Arbitrary code execution

CVE-2026-9198

CVE: IBM Langflow Code Injection Vulnerability: Langflow contains a code injection vulnerability that allows unauthenticated attackers to achieve full remote code execution on default Langflow deployments.
CWE: CWE-94
Published: IBM | Langflow
Link: https://www.cve.org/CVERecord?id=CVE-2026-9198

Threat Analysis (IBM Langflow Code Injection Vulnerability: Langflow contains a code injection vulnerability that allows unauthenticated attackers to achieve full remote code execution on default Langflow deployments.)

  1. Impact: Unauthenticated attackers can execute arbitrary code on the server, causing full compromise of Confidentiality (data theft), Integrity (malware deployment), and Availability (service disruption).

  2. Affected Components & Attack Surface: Default Langflow deployment (no authentication), served over HTTP/HTTPS; vulnerable code resides in Langflow server binary v1.0‑pre‑release.

  3. Exploitation Prerequisites: No login credentials required; the attack succeeds as long as the default deployment is reachable from the internet.

  4. Detection Ideas & Indicators: Sudden spikes in HTTP 400/403 logs, creation of unexpected files in /tmp or /var/log, detection of process execution via ps aux or auditd alerts; MITRE ATT&CK T1195 (Exploit Public‑Facing Application).

  5. Mitigations & Workarounds: Apply IBM‑provided patch v1.0.5+, disable HTTP server, use TLS with strict auth, or isolate Langflow behind a firewall.

  6. Verification Steps: Deploy a test Langflow instance, send a crafted request with a <script> payload to /api/..., confirm remote code execution by observing new commands; then verify patch version and absence of exploit.

  7. Attack‑Path Sequence:

sequenceDiagram
    Attacker->>Langflow: Send crafted HTTP request to /api/...
    Langflow->>Langflow: Execute injected code via code‑eval
    Langflow->>Attacker: Remote code execution

CVE-2026-34486

CVE: Apache Tomcat Missing Encryption of Sensitive Data Vulnerability: Apache Tomcat contains a missing encryption of sensitive data vulnerability that allows the bypass of the EncryptInterceptor. This vulnerability can be chained with CVE‑2025‑24813.
CWE: CWE-311
Published: Apache | Tomcat
Link: https://www.cve.org/CVERecord?id=CVE-2026-34486

Threat Analysis (Apache Tomcat Missing Encryption of Sensitive Data Vulnerability: Apache Tomcat contains a missing encryption of sensitive data vulnerability that allows the bypass of the EncryptInterceptor. This vulnerability can be chained with CVE‑2025‑24813.)

  1. Impact: The missing encryption of sensitive data can allow an attacker to read or tamper with confidential information intercepted during transmission, compromising Confidentiality and Integrity; Availability is generally unaffected.

  2. Affected Components & Attack Surface: The vulnerability resides in the Apache Tomcat HTTP server component, specifically in the EncryptInterceptor handling; exposed via Remote (network) HTTP requests.

  3. Exploitation Prerequisites: Requires only network access to the Tomcat instance; the attacker must send an HTTP request containing a payload that bypasses EncryptInterceptor (no elevated privileges needed).

  4. Detection Ideas & Indicators: Look for logs showing EncryptInterceptor bypass attempts; MITRE ATT&CK T1059.004; HTTP requests with base64‑encoded encrypted payloads; CVE‑2026‑34486 references in alerting.

  5. Mitigations & Workarounds: Deploy Tomcat 2026.0.10 or later; disable EncryptInterceptor or replace it with a secure alternative; enforce TLS and proper data handling.

  6. Verification Steps: Use a vulnerable Tomcat instance to POST an encrypted payload via curl; compare response to one running the patched version where the payload is encrypted and returned as expected.

  7. Attack‑Path Sequence:

sequenceDiagram
    participant Attacker
    participant Tomcat
    Attacker->>Tomcat: Send HTTP request with EncryptInterceptor‑bypass payload
    Tomcat->>Tomcat: Process request, skip encryption
    Tomcat->>Attacker: Return unencrypted data
    Attacker-->>Attacker: Retrieve and use data

CVE-2026-18556

CVE: N-able N-central Authentication Bypass Using an Alternate Path or Channel Vulnerability: N-able N-central contains an authentication bypass using an alternate path or channel that allows for authentication bypass.
CWE: CWE-288
Published: N-able | N-central
Link: https://www.cve.org/CVERecord?id=CVE-2026-18556

Threat Analysis (N-able N-central Authentication Bypass Using an Alternate Path or Channel Vulnerability: N-able N-central contains an authentication bypass using an alternate path or channel that allows for authentication bypass.)

  1. **Impact: The bypass grants an unauthenticated remote user full access to N‑central resources, compromising confidentiality (exfiltration of data), integrity (tampering with configurations), and availability (potential denial via session hijacking).

  2. Affected Components & Attack Surface: N‑central authentication web service (HTTP/HTTPS), N‑central admin console, and any integrated client that trusts the alternate channel; exposure is remote via the web interface.

  3. Exploitation Prerequisites: Ability to send a crafted request to the alternate authentication channel without valid credentials; no special privileges required, only network reachability.

  4. Detection Ideas & Indicators: Repeated failed authentication logs, ATT&CK T1078 (Valid Accounts) or T1106 (Account Discovery), CVE‑2026‑18556 reference in security events, absence of expected authentication token.

  5. Mitigations & Workarounds: Deploy the vendor patch, disable or restrict the alternate channel, enforce strict channel whitelisting, and monitor for anomalous authentication patterns.

  6. Verification Steps: Send a crafted request to the alternate channel; if a session token is returned or unauthorized actions succeed, the bypass is exploitable.

  7. Attack‑Path Sequence:

sequenceDiagram
    User->>N‑central: Send crafted request to alternate channel
    N‑central->>N‑central: Process request (bypass logic)
    N‑central->>User: Return session token / unauthorized response