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CVE-2023-30542

MEDIUM
Published 2023-04-16T07:10:13.474Z
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CVSS Score

V3.1
6.8
/10
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:L
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.002
probability
of exploitation in the wild

There is a 0.2% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.396
Higher than 39.6% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED

Impact Metrics

Confidentiality
LOW
Integrity
HIGH
Availability
LOW

Description

OpenZeppelin Contracts is a library for secure smart contract development. The proposal creation entrypoint (`propose`) in `GovernorCompatibilityBravo` allows the creation of proposals with a `signatures` array shorter than the `calldatas` array. This causes the additional elements of the latter to be ignored, and if the proposal succeeds the corresponding actions would eventually execute without any calldata. The `ProposalCreated` event correctly represents what will eventually execute, but the proposal parameters as queried through `getActions` appear to respect the original intended calldata. This issue has been patched in 4.8.3. As a workaround, ensure that all proposals that pass through governance have equal length `signatures` and `calldatas` parameters.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

OpenZeppelin

openzeppelin-contracts

Affected Versions:

>= 4.3.0, < 4.8.3

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed HIGH

GovernorCompatibilityBravo may trim proposal calldata

GHSA-93hq-5wgc-jc82

Advisory Details

### Impact The proposal creation entrypoint (`propose`) in `GovernorCompatibilityBravo` allows the creation of proposals with a `signatures` array shorter than the `calldatas` array. This causes the additional elements of the latter to be ignored, and if the proposal succeeds the corresponding actions would eventually execute without any calldata. The `ProposalCreated` event correctly represents what will eventually execute, but the proposal parameters as queried through `getActions` appear to respect the original intended calldata. ### Patches This issue has been patched in v4.8.3. ### Workarounds Ensure that all proposals that pass through governance have equal length `signatures` and `calldatas` parameters.

Affected Packages

npm @openzeppelin/contracts
ECOSYSTEM: ≥4.3.0 <4.8.3
npm @openzeppelin/contracts-upgradeable
ECOSYSTEM: ≥4.3.0 <4.8.3

CVSS Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

WEB https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-93hq-5wgc-jc82
ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2023-30542
WEB https://github.com/OpenZeppelin/openzeppelin-contracts/commit/8d633cb7d169f2f8595b273660b00b69e845c2fe
PACKAGE https://github.com/OpenZeppelin/openzeppelin-contracts
WEB https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.8.3

Advisory provided by GitHub Security Advisory Database. Published: April 20, 2023, Modified: April 27, 2023

References

https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-93hq-5wgc-jc82
https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.8.3
Published: 2023-04-16T07:10:13.474Z
Last Modified: 2025-02-06T16:05:37.183Z
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