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Medium

OpenZeppelin Contracts contains Incorrect Calculation

  • Disclosed: 03.03.2023
  • Updated: 11.10.2026 10:22

Impact

The ERC721Consecutive contract designed for minting NFTs in batches does not update balances when a batch has size 1 and consists of a single token. Subsequent transfers from the receiver of that token may overflow the balance as reported by balanceOf.

The issue exclusively presents with batches of size 1.

Patches

The issue has been patched in 4.8.2.

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Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
npm package @openzeppelin/contracts >= 4.8.0, < 4.8.2 4.8.2
npm package @openzeppelin/contracts-upgradeable >= 4.8.0, < 4.8.2 4.8.2

References

CVSS score 6.5/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness (CWE)
CWE-682
Platform
npm
Package
@openzeppelin/contracts, @openzeppelin/contracts-upgradeable
Disclosed
03.03.2023
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-878m-3g6q-594q - CC BY 4.0

Vulnerability history: @openzeppelin/contracts-upgradeable

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (22) in the archive
Total entries
22
First → latest
08.2021 07.2025
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 3
  • High 5
  • Medium 12
  • Low 2

Disclosures per year

Severity:
  1. GovernorCompatibilityBravo may trim proposal calldata
    High · 8.8 CVE-2023-30542 >= 4.3.0, < 4.8.3 4.8.3
  2. OpenZeppelin Contracts contains Incorrect Calculation this entry
    Medium · 6.5 CVE-2023-26488 >= 4.8.0, < 4.8.2 4.8.2
  3. OpenZeppelin Contracts vulnerable to ECDSA signature malleability
    High · 7.9 CVE-2022-35961 >= 4.1.0, < 4.7.3 4.7.3
  4. OpenZeppelin Contracts's GovernorVotesQuorumFraction updates to quorum may affect past defeated proposals
    High · 7.5 CVE-2022-31198 >= 4.3.0, < 4.7.2 4.7.2
  5. OpenZeppelin Contracts's SignatureChecker may revert on invalid EIP-1271 signers
    High · 7.5 CVE-2022-31172 >= 4.1.0, < 4.7.1 4.7.1
  6. OpenZeppelin Contracts's ERC165Checker may revert instead of returning false
    High · 7.5 CVE-2022-31170 >= 4.0.0, < 4.7.1 4.7.1
  7. UUPSUpgradeable vulnerability in @openzeppelin/contracts
    Critical · 9.8 CVE-2021-41264 >= 4.1.0, < 4.3.2 4.3.2
  8. UUPSUpgradeable vulnerability in @openzeppelin/contracts-upgradeable
    Critical ghsa-q4h9-46xg-m3x9 >= 4.1.0, < 4.3.2 4.3.2
  9. TimelockController vulnerability in OpenZeppelin Contracts
    Critical · 10.0 CVE-2021-39168 >= 4.0.0, < 4.3.1, >= 3.3.0, < 3.4.2 4.3.1, 3.4.2

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