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CVE-2026-24889 Detail

Description

soroban-sdk is a Rust SDK for Soroban contracts. Arithmetic overflow can be triggered in the `Bytes::slice`, `Vec::slice`, and `Prng::gen_range` (for `u64`) methods in the `soroban-sdk` in versions up to and including `25.0.1`, `23.5.1`, and `25.0.2`. Contracts that pass user-controlled or computed range bounds to `Bytes::slice`, `Vec::slice`, or `Prng::gen_range` may silently operate on incorrect data ranges or generate random numbers from an unintended range, potentially resulting in corrupted contract state. Note that the best practice when using the `soroban-sdk` and building Soroban contracts is to always enable `overflow-checks = true`. The `stellar contract init` tool that prepares the boiler plate for a Soroban contract, as well as all examples and docs, encourage the use of configuring `overflow-checks = true` on `release` profiles so that these arithmetic operations fail rather than silently wrap. Contracts are only impacted if they use `overflow-checks = false` either explicitly or implicitly. It is anticipated the majority of contracts could not be impacted because the best practice encouraged by tooling is to enable `overflow-checks`. The fix available in `25.0.1`, `23.5.1`, and `25.0.2` replaces bare arithmetic with `checked_add` / `checked_sub`, ensuring overflow traps regardless of the `overflow-checks` profile setting. As a workaround, contract workspaces can be configured with a profile available in the GitHub Securtity Advisory to enable overflow checks on the arithmetic operations. This is the best practice when developing Soroban contracts, and the default if using the contract boilerplate generated using `stellar contract init`. Alternatively, contracts can validate range bounds before passing them to `slice` or `gen_range` to ensure the conversions cannot overflow.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/stellar/rs-soroban-sdk/commit/3890521426d71bb4d892b21f5a283a1e836cfa38 GitHub, Inc.
https://github.com/stellar/rs-soroban-sdk/commit/59fcef437260ed4da42d1efb357137a5c166c02e GitHub, Inc.
https://github.com/stellar/rs-soroban-sdk/commit/c2757c6d774dbb28b34a0b77ffe282e59f0f8462 GitHub, Inc.
https://github.com/stellar/rs-soroban-sdk/pull/1703 GitHub, Inc.
https://github.com/stellar/rs-soroban-sdk/releases/tag/v22.0.9 GitHub, Inc.
https://github.com/stellar/rs-soroban-sdk/releases/tag/v23.5.1 GitHub, Inc.
https://github.com/stellar/rs-soroban-sdk/releases/tag/v25.0.2 GitHub, Inc.
https://github.com/stellar/rs-soroban-sdk/security/advisories/GHSA-96xm-fv9w-pf3f GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-190 Integer Overflow or Wraparound GitHub, Inc.  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-24889
NVD Published Date:
01/28/2026
NVD Last Modified:
01/28/2026
Source:
GitHub, Inc.