{"cve":"CVE-2026-24783","nvd":{"published":"2026-01-27T22:15:57.433","modified":"2026-06-17T10:23:35.253","status":"Analyzed","description":"soroban-fixed-point-math is a fixed-point math library for Soroban smart contacts. In versions 1.3.0 and 1.4.0, the `mulDiv(x, y, z)` function incorrectly handled cases where both the intermediate product $x * y$ and the divisor $z$ were negative. The logic assumed that if the intermediate product was negative, the final result must also be negative, neglecting the sign of $z$. This resulted in rounding being applied in the wrong direction for cases where both $x * y$ and $z$ were negative. The functions most at risk are `fixed_div_floor` and `fixed_div_ceil`, as they often use non-constant numbers as the divisor $z$ in `mulDiv`.  This error is present in all signed `FixedPoint` and `SorobanFixedPoint` implementations, including `i64`, `i128`, and `I256`. Versions 1.3.1 and 1.4.1 contain a patch. No known workarounds for this issue are available.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5},"cwes":["CWE-682"],"references":["https://github.com/script3/soroban-fixed-point-math/commit/c9233f7094198a49ed66a4d75786a8a3755c936a","https://github.com/script3/soroban-fixed-point-math/releases/tag/v1.3.1","https://github.com/script3/soroban-fixed-point-math/releases/tag/v1.4.1","https://github.com/script3/soroban-fixed-point-math/security/advisories/GHSA-x5m4-43jf-hh65"],"products":["script3:soroban-fixed-point-math"],"source":"nvd","synced_at":"2026-10-19T22:21:16.563232421+00:00"},"epss":{"cve":"CVE-2026-24783","score":0.00408,"percentile":0.35098,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-x5m4-43jf-hh65","url":"https://osv.dev/vulnerability/GHSA-x5m4-43jf-hh65","summary":"soroban-fixed-point-math has Incorrect Rounding and Overflow Handling in Signed Fixed-Point Math with Negatives","modified":"2026-02-03T03:06:39.687842Z","packages":[{"ecosystem":"crates.io","name":"soroban-fixed-point-math","purl":"pkg:cargo/soroban-fixed-point-math","ranges":[">=1.4.0 <1.4.1"],"fixed":["1.4.1"]},{"ecosystem":"crates.io","name":"soroban-fixed-point-math","purl":"pkg:cargo/soroban-fixed-point-math","ranges":[">=1.3.0 <1.3.1"],"fixed":["1.3.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}