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CVE-2023-49798

MEDIUM
Published 2023-12-08T23:35:24.467Z
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CVSS Score

V3.1
5.9
/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.004
probability
of exploitation in the wild

There is a 0.4% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.583
Higher than 58.3% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
HIGH
Availability
NONE

Description

OpenZeppelin Contracts is a library for smart contract development. A merge issue when porting the 5.0.1 patch to the 4.9 branch caused a line duplication. In the version of `Multicall.sol` released in `@openzeppelin/[email protected]` and `@openzeppelin/[email protected]`, all subcalls are executed twice. Concretely, this exposes a user to unintentionally duplicate operations like asset transfers. The duplicated delegatecall was removed in version 4.9.5. The 4.9.4 version is marked as deprecated. Users are advised to upgrade. There are no known workarounds for this issue.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

OpenZeppelin

openzeppelin-contracts

Affected Versions:

= 4.9.4

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed MODERATE

OpenZeppelin Contracts and Contracts Upgradeable duplicated execution of subcalls in v4.9.4

GHSA-699g-q6qh-q4v8

Advisory Details

### Context Merge conflict resolution issue when porting the v5.0.1 `Multicall` update to the v4.9 branch caused a duplicated line. ### Impact Versions using `Multicall` from `@openzeppelin/[email protected]` and `@openzeppelin/[email protected]` will execute each subcall twice. Concretely, this exposes a user to unintentionally duplicate operations like asset transfers. ### Patches The duplicated `delegatecall` was removed in 4.9.5. The 4.9.4 version is marked as deprecated.

Affected Packages

npm @openzeppelin/contracts
ECOSYSTEM: ≥4.9.4 <4.9.5
npm @openzeppelin/contracts-upgradeable
ECOSYSTEM: ≥4.9.4 <4.9.5

CVSS Scoring

CVSS Score

5.0

CVSS Vector

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

References

WEB https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-699g-q6qh-q4v8
ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2023-49798
WEB https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/commit/31f9fb9d171f60b2271b2b9c6f62d43302bf9489
WEB https://github.com/OpenZeppelin/openzeppelin-contracts/commit/88ac712e06832bce73b41e8166cded2729e25205
PACKAGE https://github.com/OpenZeppelin/openzeppelin-contracts

Advisory provided by GitHub Security Advisory Database. Published: December 12, 2023, Modified: December 12, 2023

References

https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-699g-q6qh-q4v8
https://github.com/OpenZeppelin/openzeppelin-contracts/commit/88ac712e06832bce73b41e8166cded2729e25205
Published: 2023-12-08T23:35:24.467Z
Last Modified: 2024-08-02T22:01:26.056Z
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