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CVE-2022-31198

23
FAUCET Score

CVE-2022-31198 is a high-severity vulnerability affecting OpenZeppelin Contracts, specifically instances of Governor using the GovernorVotesQuorumFraction module. It allows previously defeated proposals to become executable if the quorum requirement is lowered and the proposal's votes meet the new, lower threshold. This vulnerability has a CVSS score of 7.5 (High) due to its network-based attack vector and high impact on integrity, with no user interaction required. While no active exploitation, public exploit code, or significant community discussion has been observed, users are advised to upgrade to v4.7.2 or avoid lowering quorum requirements if past proposals were defeated for lack of quorum.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.3.0, < 4.7.2CPE matchmatch criteria
cpe:2.3:a:openzeppelin:contracts:*:*:*:*:*:node.js:*:*
>= 4.3.0, < 4.7.2CPE matchmatch criteria
cpe:2.3:a:openzeppelin:contracts_upgradeable:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.65%
Probability of exploitation in next 30 days
EPSS Percentile
47.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0065 is in the 24th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: @openzeppelin/contractsFixed in: 4.7.2
npmpatch availablevia ghsa
Product: @openzeppelin/contracts-upgradeableFixed in: 4.7.2

Vendor Advisories (1)

npmGHSA-xrc4-737v-9q75high

OpenZeppelin Contracts's GovernorVotesQuorumFraction updates to quorum may affect past defeated proposals

Aug 18, 2022

References

github.com / OpenZeppelin/openzeppelin-contracts/pull/3561
PatchThird Party Advisory
github.com / OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-xrc4-737v-9q75
Third Party Advisory