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CVE-2021-32823

17
FAUCET Score

CVE-2021-32823 is a denial-of-service vulnerability in the bindata RubyGem, affecting versions prior to 2.4.10, including its use in GitLab. This flaw stems from slow object creation for specific BinData classes, which, when combined with user-controlled input and constantize, can lead to a CPU-based DoS. The CVSS score is 3.7 (Low), indicating a network-based attack with high attack complexity and low impact on availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.4.10CPE matchmatch criteria
cpe:2.3:a:bindata_project:bindata:*:*:*:*:*:ruby:*:*
>= 12.0, < 13.10.5CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
>= 12.0, < 13.10.5CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
>= 13.11.0, < 13.11.5CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
>= 13.11.0, < 13.11.5CPE matchmatch criteria
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.7LOW

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.2
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.87%
Probability of exploitation in next 30 days
EPSS Percentile
77.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0187 is in the 69th percentile among its peer group of 1,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
rubygemspatch availablevia ghsa
Product: bindataFixed in: 2.4.10

Vendor Advisories (1)

rubygemsGHSA-hj56-84jw-67h6medium

Potential Denial-of-Service in bindata

Jun 23, 2021

References

about.gitlab.com / releases/2021/06/01/security-release-gitlab-13-12-2-released
Third Party Advisory
github.com / dmendel/bindata/blob/v2.4.10/ChangeLog.rdoc
Third Party Advisory
github.com / dmendel/bindata/commit/d99f050b88337559be2cb35906c1f8da49531323
PatchThird Party Advisory
github.com / rubysec/ruby-advisory-db/issues/476
ExploitPatchThird Party Advisory
rubygems.org / gems/bindata
Third Party Advisory