ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad 5.0.0, halo2_gadgets 0.5.0, orchard 0.14.0, zcash_primitives 0.28.0, and zcashd 6.20.0, the variable-base scalar multiplication gadget in halo2_gadgets/src/ecc/chip/mul/incomplete.rs used assign_advice() for the base point without a copy constraint tying it to the actual base, allowing a malicious prover to produce a valid proof for an Orchard Action with an under-constrained base point and bypass the diversified-address-integrity check that binds pk_d, g_d, ivk, the nullifier (nf), and the spend validating key (ak) to the note being spent. This issue is fixed in zebrad 5.0.0, halo2_gadgets 0.5.0, orchard 0.14.0, zcash_primitives 0.28.0, and zcashd 6.20.0.

An issue was discovered in Orchard before 1.10. The Media Settings Allowed File Types list field allows an attacker to add a XSS payload that will execute when users attempt to upload a disallowed file type, causing the error to display.

An issue was discovered in Orchard before 1.10. A broken access control issue in Orchard components that use the TinyMCE HTML editor's file upload allows an attacker to upload dangerous executables that bypass the file types allowed (regardless of the file types allowed list in Media settings).

Cross-site scripting (XSS) vulnerability in the Users module in Orchard 1.7.3 through 1.8.2 and 1.9.x before 1.9.1 allows remote attackers to inject arbitrary web script or HTML via the username when creating a new user account, which is not properly handled when deleting an account.

Cross-site scripting (XSS) vulnerability in the Orchard.Comments module in Orchard before 1.6.1 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Open redirect vulnerability in Users/Account/LogOff in Orchard 1.0.x before 1.0.21, 1.1.x before 1.1.31, 1.2.x before 1.2.42, and 1.3.x before 1.3.10 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the ReturnUrl parameter.