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CVE-2026-76078

Probo: Broken access control in public e-signature API

Probo is a self-hostable governance, risk, and compliance (GRC) platform built for engineering and security teams. Prior to version 0.224.0, the public Trust Center GraphQL API exposes acceptElectronicSignature and recordSigningEvent, both gated only by @authentication(required: PRESENT) @sessionOnly — any self-provisioned trust center identity can call them. The underlying esign.Service.AcceptSignature and esign.Service.recordEvent build the tenant scope from the client-supplied signatureId GID (coredata.NewScopeFromObjectID(req.SignatureID)) and load the signature by that GID. At no point do they verify that the signature belongs to the caller or that the caller's email matches the signature's SignerEmail. As a result, any authenticated trust-center visitor who possesses another visitor's signature GID can: (1) complete that visitor's NDA signature — overwriting signer name/IP/UA with attacker data and setting status to Accepted, which triggers the sealing worker to generate a completion certificate; (2) inject arbitrary audit-trail events into any signature's log. Both attacks defeat the non-repudiation and integrity guarantees of the e-signature system. This issue has been patched in version 0.224.0.

CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed
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Getprobo
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Probo
CVE-2026-76079

Probo: Vertical privilege escalation

Probo is a self-hostable governance, risk, and compliance (GRC) platform built for engineering and security teams. Prior to version 0.224.0, an organization ADMIN can mint an OWNER membership via createUser, bypassing the owner-only set-owner authorization gate. This issue has been patched in version 0.224.0.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
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Getprobo
Products
Probo
CVE-2026-76080

Probo: Unauthenticated cross-tenant and hidden-item disclosure via Query.node in the public Trust Center API

Probo is a self-hostable governance, risk, and compliance (GRC) platform built for engineering and security teams. Prior to version 0.224.0, the public Trust Center GraphQL API exposes Query.node(id:) with @authentication(required: OPTIONAL) — an unauthenticated internet visitor to any published trust center can call it. Six of its type branches — Organization, Framework, Audit, ThirdParty (subprocessor), TrustCenter, and TrustCenterReference — resolve the object with a tenant scope derived from the client-supplied GID itself (coredata.NewScopeFromObjectID(id)) and load it with a bare Get(scope, id) that performs no comparison to the current trust center's OrganizationID and no showOnTrustCenter/visibility check. (The Document and File branches, by contrast, correctly pass trustCenter.OrganizationID and check visibility). This issue has been patched in version 0.224.0.

CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed
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Getprobo
Products
Probo
CVE-2026-64861

Probo: GraphQL Alias-Based Application Layer Denial of Service (DoS)

Probo is a self-hostable governance, risk, and compliance (GRC) platform built for engineering and security teams. Prior to version 0.222.0, the GraphQL endpoint does not enforce restrictions on alias count, query depth, or query complexity. An attacker can send a single request containing thousands of aliased resolver calls, causing excessive server-side resource consumption and service degradation. This issue has been patched in version 0.222.0.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
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Getprobo
Products
Probo
CVE-2026-63505

Probo: Cross-tenant IDOR via unvalidated FK references

Probo is a self-hostable governance, risk, and compliance (GRC) platform built for engineering and security teams. Prior to version 0.223.1, Probo's console GraphQL API is a multi-tenant GRC platform where all data is scoped to an organization. A Finding can reference a Risk via finding.riskId. That reference is stored without validating that the risk belongs to the caller's organization, and the Finding.risk field resolver authorizes the finding (caller's org) instead of the risk, then loads the risk with a tenant scope derived from the risk's own global ID. As a result, an authenticated member of organization A can attach an arbitrary organization B risk GID to a finding they own and then read organization B's Risk (name, description, treatment, category, severity, owner) — with no membership in B. The stored cross-tenant reference also blocks B from deleting its own risk (ON DELETE RESTRICT), a cross-tenant integrity/DoS. This issue has been patched in version 0.223.1.

CVSS 3.1 · 4.9 Medium EPSS < 1% KEV · Not listed
Vendors
Getprobo
Products
Probo
CVE-2026-49820

Probo has an open redirect bypass via path normalization

Probo is a self-hostable governance, risk, and compliance (GRC) platform built for engineering and security teams. Probo's `saferedirect` package validates redirect URLs used across authentication flows (OIDC, SAML, session transfer, OAuth connectors, and trust-center magic links). Prior to version 0.19.3.1, the validator only inspected the second character of relative paths, so a URL like `/../\evil.com` passed validation because the second character is `.`. Go's `http.Redirect` normalizes this path to `/\evil.com` before setting the `Location` header. Browsers can interpret the backslash as a host separator and redirect the user to an external domain (`https://evil.com`), bypassing the intended same-origin restriction. This enables open-redirect phishing: an attacker can craft a `continue` parameter (or embed a malicious URL in a session-transfer token) that appears to originate from a trusted Probo domain but redirects victims elsewhere. This is fixed in `go.probo.inc/probo` 0.193.1 by normalizing relative paths with `path.Clean` before validation, rejecting backslashes (including percent-encoded `%5c`) anywhere in the path, and re-checking the normalized result for protocol-relative and backslash prefixes. Self-hosted deployments should upgrade to probod v0.194.1 or later. SaaS deployments on getprobo.com are patched. No practical workaround is available for self-hosted installations.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Vendors
Getprobo
Products
Probo