GHSA-5v93-9mqw-p9mh — orml-rewards
Fix: open-web3-stack/open-runtime-module-library#1016GHSA-5v93-9mqw-p9mh is a remote code execution vulnerability in orml-rewards. A fix is available for orml-rewards — see the affected versions and patch details below.
Uncaught Panic in ORML Rewards Pallet
Real-World Exposure
orml-rewardsReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.
Description
Summary
A vulnerability in the add_share function of the Rewards pallet (part of the ORML repository) can lead to an uncaught Rust panic when handling user-provided input exceeding the u128 range.
Affected Components
- ORML Rewards pallet (
rewards/src/lib.rs) - Any Substrate-based chain using ORML Rewards with
add_shareaccepting unvalidated largeu128inputs
Technical Details
add_shareperforms arithmetic on user-supplied values (add_amount) of typeT::Share(mapped tou128in Acala).- If
add_amountis large enough (e.g.,i128::MAX), the intermediate result may overflow and panic on the cast tou128. - Validation occurs only after arithmetic, enabling a crafted input to trigger an overflow.
Impact
A malicious user submitting a specially crafted extrinsic can cause a panic in the runtime:
- Denial of Service by crashing the node process.
- Potential for invalid blocks produced by validators.
Likelihood
This issue is exploitable in production if there exists at least one rewards pool where reward tokens exceed twice the collateral tokens, allowing sufficiently large multiplication to exceed u128 bounds.
Remediation
- This issue is fixed in https://github.com/open-web3-stack/open-runtime-module-library/pull/1016
Backport
The patch have been backported to following release branches:
- polkadot-stable2407
- polkadot-stable2409
A 1.0.1 patch release is made with this fix.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | orml-rewards | all versions | 1.2.1cargo update -p orml-rewards --precise 1.2.1 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for orml-rewards, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update orml-rewards to 1.2.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-5v93-9mqw-p9mh is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-5v93-9mqw-p9mh can be triaged on real exposure rather than presence alone.
Tailored to GHSA-5v93-9mqw-p9mh. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-5v93-9mqw-p9mh in your dependencies?
O3 Security finds GHSA-5v93-9mqw-p9mh across crates.io dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.