MCP Atlassian: SSRF Protection Bypass

Environment - Project: sooperset/mcp-atlassian - Affected function: validateurlforssrf - Affected path: header-based Jira/Confluence URL authentication flow - Tested endpoint: POST /mcp - Tested version: 2.14.5 Description The SSRF protection in validateurlforssrf can be bypassed with a URL...

MCP Atlassian: Incomplete path traversal fix allows intra-CWD module overwrite and RCE (bypass of GHSA-xjgw-4wvw-rgm4)

Summary The path traversal fix introduced in v0.17.0 GHSA-xjgw-4wvw-rgm4 is incomplete. validatesafepath is called without an explicit basedir, defaulting to os.getcwd. In standard container deployments the process CWD is the application directory e.g. /app, so paths within that directory,...

mcp-atlassian has an incomplete SSRF remediation

Summary The UserTokenMiddleware extracts URLs from X-Atlassian-Jira-Url and X-Atlassian-Confluence-Url HTTP headers and passes them directly to API client constructors without any SSRF validation. Affected Package - Ecosystem: PyPI - Package: mcp-atlassian - Affected versions: all versions before...

MCP Atlassian: Reflected XSS in OAuth Setup Callback Handler

Summary The OAuth 2.0 setup wizard's local callback HTTP server reflects the error query parameter directly into an HTML response without any sanitization or encoding. An attacker can craft a malicious callback URL containing JavaScript in the error parameter that executes in the victim's browser...

MCP Atlassian: Path Traversal / Arbitrary File Read in confluence_upload_attachment MCP tool (incomplete fix of GHSA-xjgw-4wvw-rgm4)

Summary mcp-atlassian exposes an MCP tool confluenceuploadattachment whose filepath argument is passed directly to openfilepath, "rb" without any path validation. An attacker able to invoke the tool can read arbitrary files readable by the server process and exfiltrate them into a multipart uploa...

MCP Atlassian: Insecure File Permissions on OAuth Token Storage

Summary The OAuth token fallback file storage in OAuthConfig.savetokenstofile creates token files containing access tokens, refresh tokens, and cloud IDs with default filesystem permissions typically 0644 on Linux, world-readable. Any local user on a shared system can read these files to obtain...

MCP Atlassian: Arbitrary file read via confluence_upload_attachment allows exfiltration of server credentials

Summary Missing path validation in confluenceuploadattachment allows any authenticated MCP client to read arbitrary files from the server filesystem and exfiltrate their contents to Confluence. On Linux deployments, /proc/self/environ yields all runtime secrets in a single call. --- Details...

MCP Atlassian: SSRF redirect protection missing for basic-auth and OAuth authentication branches

Summary makessrfsafehook blocks HTTP redirects to private/internal IPs by validating the Location header before the client follows a 3xx response. The problem is that this hook is only attached in one of three authentication branches — the header-PAT path. Basic auth and OAuth branches skip it...

MCP Atlassian: Arbitrary File Read via Upload Attachment Tools

Summary The upload attachment tools in both Confluence and Jira accept arbitrary file paths without path traversal validation. The uploadattachment methods read any file accessible to the server process and upload it to a Confluence page or Jira issue. Despite the existence of a validatesafepath...

MCP Atlassian: SSRF via DNS Rebinding in Header-Based Authentication Flow

Summary The SSRF protection for header-based authentication uses a validate-then-use pattern vulnerable to DNS rebinding. validateurlforssrf resolves the hostname via DNS and checks that the resolved IP is globally routable. However, the actual HTTP request happens later, during which the DNS...

MCP Atlassian: Path traversal in upload_attachment allows arbitrary file read and exfiltration via MCP tool call

Summary The uploadattachment functions in both the Jira and Confluence modules accept a user-controlled filepath parameter and open the specified file for reading without calling validatesafepath. An authenticated MCP client can supply an arbitrary path such as /etc/passwd or /proc/self/environ,...

MCP Atlassian: Path traversal in upload_attachment allows arbitrary file read (incomplete fix for CVE-2026-27825)

Summary The confluenceuploadattachment and confluenceuploadattachments MCP tools accept a filepath parameter and do not validate that the path is confined to an allowed directory before opening the file. An attacker who can call these tools can read any file accessible to the MCP server process S...

MCP Atlassian: Arbitrary local file READ via unconstrained file_path in upload_attachment (Confluence + Jira)

Summary This is an arbitrary local file READ vulnerability on the Confluence and Jira uploadattachment tool paths. It's the symmetric counterpart of the file-write vulnerability you patched as CVE-2026-27825. The write direction was fixed; the read direction was left open. Reporter: Sean Valentin...

MCP Atlassian: HTTP upload tools accept arbitrary server-local file paths

sooperset/mcp-atlassian: HTTP upload tools can attach arbitrary server-local files Date: 2026-05-05 Target: sooperset/mcp-atlassian Commit: d8bc78698a63cb6b321c7ca796d6329d448f7f6d Summary mcp-atlassian supports HTTP/SSE deployment for persistent, remote, and multi-user use. In that mode,...

MCP Atlassian: ENABLED_TOOLS / Toolset authorization bypass

Summary ENABLEDTOOLS and TOOLSETS filters are enforced at tools/list time only. tools/call dispatches from the full unfiltered tool registry 73 tools. Any user with access to the server endpoint that knows a tool name can invoke it directly. Tool names are not secret since mcp-atlassian is open...

MCP Atlassian: Arbitrary File Read & Exfiltration (Confused Deputy) in JIRA update_issue

Summary A critical Confused Deputy Arbitrary File Read & Exfiltration vulnerability in the Atlassian MCP server Python allows an AI agent to exfiltrate sensitive host files and environment secrets. By providing absolute system paths to the attachments parameter of the updateissue tool, an agent c...

MCP Atlassian: Jira and Confluence attachment upload tools can read arbitrary server-local files

Summary MCP Atlassian exposes Jira and Confluence attachment upload tools that accept arbitrary local filesystem paths and upload those file contents to Atlassian. In HTTP or multi-user deployments, an MCP caller who can invoke write tools can cause the server to read any file accessible to the M...

MCP Atlassian: JIRA_PROJECTS_FILTER / CONFLUENCE_SPACES_FILTER allow forbidden-project content exfiltration (one LIVE-proven on Atlassian Cloud)

Summary mcp-atlassian is a popular community MCP server wrapper exposing Jira / Confluence to MCP clients. Operators commonly restrict the surface to a small allowlist of projects/spaces via the JIRAPROJECTSFILTER and CONFLUENCESPACESFILTER environment variables, which the README documents as the...

MCP Atlassian: MCP HTTP Client Server-Local File Exfiltration via Unvalidated Attachment Upload Path

Summary The mcp-atlassian server exposes an MCP tool confluenceuploadattachment and the Jira attachment variant that accepts an arbitrary server-side file path and opens it for upload without any path validation. When the server is deployed in HTTP transport mode streamable-http or sse, a remote,...

MCP Atlassian: Unauthenticated arbitrary local file read via upload_attachment file_path, chained with missing auth on streamable-http transport

Summary In the documented multi-user HTTP deployment --transport streamable-http with global operator Atlassian credentials, sooperset/mcp-atlassian exposes all tools to unauthenticated network clients, and the uploadattachment tool reads an attacker-supplied filepath with no path validation...

Unleash: Clone-feature lets a user copy a feature from a project they cannot read

Summary The clone-feature endpoint supports copying features across projects, but it does not verify that the caller can access the source project. A user with create permissions in one project can clone a feature from another project they cannot read and then inspect the copied configuration. Th...

Unleash: CR-approval email renders user-controlled raw HTML

Summary The change-request approval HTML email template renders fields as raw HTML. User who can create a change request can inject HTML into approval notification emails. I was not able to confirm Enterprise platform is using vulnerable code nor that it doesn't sanitize input. Details...

Novu: Stored XSS in In-App Inbox via notification redirect.url javascript: scheme

Summary The @novu/js In-App Inbox renderer passes a notification's redirect.url to window.open with no URL-scheme validation. The value originates from a notification's call-to-action and is delivered to the recipient verbatim. An authenticated organization member or any holder of the environment...

Graylog: Manager-to-Owner privilege escalation on saved searches and dashboards

Impact A vulnerability was found in Graylog's API endpoint for updating saved searches and dashboards. A user with edit permissions on a dashboard or saved search could grant owner permissions to an arbitrary account, which could then be used to delete the respective saved search or dashboard or ...

SIPGO: DoS via unvalidated WebSocket frame length

Summary The WebSocket transport allocates a buffer from the frame payload length before validating its size, which can lead to an unauthenticated DoS. Details WSConnection.Read allocates a buffer from the declared WebSocket frame length before reading the payload...

MPXJ: Potential Path Traversal Vulnerability in Primavera P3 PRX and SureTrak STX readers

Impact When reading a suitably crafted PRX or STX file, MPXJ can be made to write files to arbitrary locations in the file system. Patches This issue is addressed in MPXJ version 16.5.0. Workarounds Do not read PRX or STX files from untrusted sources...

MPXJ: XXE Vulnerability in MerlinReader

Impact MPXJ used the default configuration when creating a DocumentBuilder instance, which leaves doctype declarations enabled, when parsing the XML content of the ZTIMEINTERVALS column from a Merlin project SQLite file. This would allow a carefully crafted XML payload to read an arbitrary file...

Fabio - Incomplete fix for CVE-2025-48865: operator-configured trust headers (clientip/tls/requestid) still strippable via the Connection header

Affected: github.com/fabiolb/fabio = 1.6.6 through 1.7.1 and master HEAD c75f8a6. Summary The v1.6.6 fix for CVE-2025-48865 sweeps the client Connection header against a hardcoded allowlist protectHeaders proxy/httpheaders.go:28-36 containing only the 7 X-Forwarded family headers. Fabio also...

mppx: Gas Draining with access list

Details When the server acts as the feepayer, mppx 0.6.27 copies the client-supplied EIP-2930 access list verbatim into the cosigned fee-payer transaction. The TypeScript SDK's fee-payer cosigning path accepts any accesslist the client includes in the 0x78 FeePayerEnvelope without inspecting its...

mppx: Gas Draining with padding

Details When the server acts as the feepayer, mppx 0.6.27 validates calldata using viem's decodeFunctionData, which is lenient about trailing bytes. The FeePayerPolicy caps gaslimit ≤ 2 M and maxfeepergas ≤ 100 Gwei but does not check calldata length. Tempo uses legacy calldata gas pricing: 16 ga...

Hatchet: Cross-Tenant Durable Task Event Log Disclosure via Missing Authorization Check

Summary The GET /api/v1/stable/durable-tasks/durable-task endpoint listDurableEventLog is missing tenant authorization validation, allowing any authenticated user to read durable task event logs from any tenant. Impact This CVE requires the attacker to successfully guess the target UUID. Any...

Hatchet: SSRF via Unsigned UnsubscribeURL in SNS UnsubscribeConfirmation Handler

Summary The SNS UnsubscribeConfirmation handler in internal/integrations/ingestors/sns/sns.go makes an unvalidated http.Get call to payload.UnsubscribeURL without any URL restriction. Because UnsubscribeURL is intentionally excluded from the BuildSignature signed field list, an attacker can repla...

wlc may disclose API tokens to project-configured URLs

Impact wlc could send an unscoped API token to an unintended server when run inside a directory tree containing attacker-controlled project configuration. If .weblate, .weblate.ini, or weblate.ini defines an API url, and the user supplies a token with WLCKEY or --key without also pinning the URL,...

SIPGO: DoS via unvalidated Content-Length in the stream parser

Summary The stream parser allocates the SIP body buffer from the Content-Length header before validating its size, which can lead to an unauthenticated DoS. Details ParserStream.parseSingle allocates the body buffer from the declared Content-Length with no size check...

deepstream: PATCH_MULTI action bypasses Valve permission system allowing unauthorized record writes

Summary The RECORDACTION.PATCHMULTI action is not registered in the Valve permission system's RULESMAP src/services/permission/valve/rules-map.ts. When ConfigPermission.canPerformAction is called for a PATCHMULTI message, getRulesForMessage returns null because the action is missing from the map...

request-filtering-agent: Synchronous throw from createConnection() for literal private-IP hosts bypasses req.on('error'), crashing the Node.js process

Summary RequestFilteringHttpAgent / RequestFilteringHttpsAgent block requests to private IPs, but the blocking happens via a synchronous throw inside createConnection for literal private-IP hostnames e.g. 169.254.169.254, 127.0.0.1. Node.js's http.request / http.get expects createConnection to em...

Dasel: Selector lexer panics on trailing whitespace in `parseCurRune`

Same panic class as GHSA-m5j3-4634-c2vq and GHSA-m6xr-fvfg-5g64, sister site on the same function. Trigger is any selector ending in whitespace: dasel query 'a ' panics at selector/lexer/tokenize.go:60. The whitespace-skip loop right above lines 55-57 advances p.i to p.srcLen when the input is...

Dasel: Unbounded recursion in JSON and XML readers causes unrecoverable stack-overflow DoS

Summary dasel's JSON and XML readers parse nested structures with unbounded recursion, one native stack frame per nesting level, with no depth guard. A small sub-10 MB, deeply nested document drives the Go runtime past its goroutine stack limit and triggers a fatal error: stack overflow. This is...

OpenCVE: Server-Side Request Forgery (SSRF) in notifications

Impact OpenCVE contains a Server-Side Request Forgery SSRF vulnerability in the notification testing functionality for both Webhook and Slack integrations. An authenticated user with permission to configure notification channels can trigger test requests to arbitrary HTTPS endpoints. Insufficient...

psd-tools composite/numpy has uncontrolled memory allocation via crafted PSD geometry

Summary PSDImage.composite and .numpy allocate the output image buffer from the PSD's header geometry width × height × channels × depth, and per-layer rectangles before validating those values against the actual file contents. A tiny crafted PSD declaring huge dimensions causes a multi-gigabyte...

microsandbox: Secret values exposed in world-readable process arguments

Summary When the SDK spawns a sandbox, the msb sandbox child process receives the full network configuration as an inline --network-config command-line argument, and any per-sandbox environment as repeated --env KEY=VALUE arguments. On Linux a process's arguments are world-readable via...

9Router has a Login Brute-Force Lockout Bypass via Spoofable X-9r-Real-Ip Header

Summary 9router enforces a progressive login lockout 5 failed attempts → temporary 30s+ lock keyed on the client IP. The client IP used for this limiter is taken from the X-9r-Real-Ip request header, which is intended to be set only by the bundled custom-server.js layer from the unspoofable TCP...

9Router has an Authentication Bypass in Public LLM API via Spoofable X-9r-Real-Ip Header

Summary 9router determines whether an incoming request originates from localhost by trusting the X-9r-Real-Ip HTTP request header. This header is intended to be produced and sanitized exclusively by the bundled custom-server.js layer from the TCP socket address. In deployment modes where requests...

@aborruso/ckan-mcp-server has SSRF via DNS-name → internal IP — incomplete fix of CVE-2026-53509

Summary The SSRF guard validateServerUrl added for CVE-2026-33060, extended for CVE-2026-53509 validates only the hostname string and never resolves DNS. Any caller-supplied serverurl whose hostname resolves to an internal address passes the guard, so the server issues requests to loopback and...

Sync-in Server has Username/Login Enumeration via Timing Side-Channel on POST /api/auth/login (incomplete fix of the prior timing-attack advisory)

Summary validateUser in backend/src/authentication/providers/mysql/auth-provider-mysql.service.ts returns immediately when the supplied login/email does not match any account, without ever calling comparePassword: async validateUserloginOrEmail: string, password: string, ip?: string, scope?:...

Sync-in Server has a ReDoS via Unsanitized Regex in Sync Diff `pathFilters`

Affected component: Sync-in Server v2.3.0, POST /api/app/sync/operation/diff/:id, vulnerable implementation of pathFilters in backend/src/applications/sync/dtos/sync-operations.dto.ts. Summary In the vulnerable version, the sync diff endpoint accepted a user-controlled regex pattern through...

Sync-in Server has a complete 2FA Bypass via `POST /api/auth/token`

Affected component: Sync-in Server v2.3.0, POST /api/auth/token auth.controller.ts:50-55. Required attacker capability: Valid username and password for a 2FA-enabled account. Summary POST /api/auth/token authenticates with username and password only, then calls getTokens, which returns unrestrict...

@sync-in/server vulnerable to TOTP Brute-Force via `POST /api/app/sync/register`

Affected component: Sync-in Server v2.3.0, POST /api/app/sync/register. Required attacker capability: Valid login and password for a TOTP-enabled account with desktop sync permission. Summary POST /api/app/sync/register accepts credentials and a TOTP code to register a desktop sync client. In the...

@roomi-fields/notebooklm-mcp has a path traversal in vault.batch tool that allows arbitrary file write outside intended vault directory

Summary The vaultbatch MCP tool and the equivalent POST /batch-to-vault HTTP endpoint accepted a caller-supplied vaultdir path that was passed directly to path.resolve + fs.mkdir with no containment check. A caller — or a prompt-injected LLM driving the MCP — could therefore create directories an...

nginx ignition has Unauthenticated Admin Account Creation via Onboarding Race Condition

Summary POST /api/users/onboarding/finish is registered as anonymous unauthenticated and creates a user with full ReadWrite admin permissions. Because the handler uses a check-then-act TOCTOU pattern between the "onboarding already completed?" check and the user-creation write, with no atomic...