Staging Environment: Content and features may be unstable or change without notice.
Advisory details: ruby_advisory_db / gems/activesupport/CVE-2026-33176
Advisory ID ruby_advisory_db/gems/activesupport/CVE-2026-33176
Aliases CVE-2026-33176
GHSA-2j26-frm8-cmj9
Summary Rails Active Support has a possible DoS vulnerability in its number helpers ### Impact Active Support number helpers accept strings containing scientific notation (e.g. `1e10000`), which when converted to a string could be expanded into extremely large decimal representations. This can cause excessive memory allocation and CPU consumption when the expanded number is formatted, possibly resulting in a DoS vulnerability. ### Releases The fixed releases are available at the normal locations.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (0)
There are no known CWE.
System Score Found at
cvssv4 6.6
Reference id Reference type URL
GHSA-2j26-frm8-cmj9 https://github.com/rails/rails/security/advisories/GHSA-2j26-frm8-cmj9
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
There are no known vectors.

Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-24T18:42:42Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/33xxx/CVE-2026-33176.json

Source Advisory: vulnrichment/CVE-2026-33176

View SSVC decision tree 
[{'Exploitation': 'none'},
 {'Automatable': 'yes'},
 {'Technical Impact': 'partial'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]