https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-05T21:34:23.443207+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/euvd-2026-186614 EUVD-2026-186614 2026-10-05T21:34:23.446713+00:00 EUVD-2026-186614 https://cve.radiocsirt.org/vuln/fkie_cve-2023-44378 fkie_cve-2023-44378 2026-10-05T21:34:23.446754+00:00

gnark is a zk-SNARK library that offers a high-level API to design circuits. Prior to version 0.9.0, for some in-circuit values, it is possible to construct two valid decomposition to bits. In addition to the canonical decomposition of `a`, for small values there exists a second decomposition for `a+r` (where `r` is the modulus the values are being reduced by). The second decomposition was possible due to overflowing the field where the values are defined. Upgrading to version 0.9.0 should fix the issue without needing to change the calls to value comparison methods.

 https://cve.radiocsirt.org/vuln/ghsa-498w-5j49-vqjg GHSA-498w-5j49-vqjg — gnark unsoundness in variable comparison / non-unique binary decomposition 2026-10-05T21:34:23.446809+00:00

Affected: Go: github.com/consensys/gnark

### Impact

For some in-circuit values, it is possible to construct two valid decomposition to bits. In addition to the canonical decomposition of `a`, for small values there exists a second decomposition for `a+r` (where `r` is the modulus the values are being reduced by). The second decomposition was possible due to overflowing the field where the values are defined.

Internally, the comparison methods `frontend.API.Cmp` and `frontend.API.IsLess` used binary decomposition and checked the bitwise differences. This allows a malicious prover to construct a valid proof for a statement `a < b` even if `a > b`.

The issue impacts all users using `API.Cmp` or `API.IsLess` methods. Additionally, it impacts the users using `bits.ToBinary` or `API.ToBinary` methods if full-width decomposition is requested (the default behaviour if no options are given).

The issues does not impact comparison methods in field emulation (package `std/math/emulated`) and dedicated comparison package (`std/math/cmp`).

### Patches

Fix has been implemented in pull request #835 and merged in commit 59a4087261a6c73f13e80d695c17b398c3d0934f to master branch. The release v0.9.0 and onwards include the fix.

The fix added additional comparison of the decomposed bit-vector to the modulus of the in-circuit values.

### Workarounds

Upgrading to version v0.9.0 should fix the issue without needing to change the calls to value comparison methods.

Alternatively, users can use the `std/math/cmp` gadget, which ad…

 https://cve.radiocsirt.org/vuln/gsd-2023-44378 gsd-2023-44378 2026-10-05T21:34:23.446885+00:00 gsd-2023-44378