Technology · RubyGems
activesupport (RubyGems) vulnerabilities
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Junglewise Threat Intelligence has tracked 20 vulnerabilities in activesupport (RubyGems): 2 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-126080, was published on 10 November 2026. Nothing was published in the last eight weeks.
- Last 7 days
- 2
- Last 90 days
- 2
- Critical, all time
- 0
- Exploited in the wild
- 0
About activesupport (RubyGems)
Ruby on Rails utility library providing extensions and helpers for common programming tasks.
Latest activesupport (RubyGems) vulnerabilities
- CVE-2026-126080: Rails Active Support regular expression injection in safe_constantizehighCVSS 7.5
- CVE-2026-126075: Rails Active Support MessagePack unsafe serialization XSSmediumCVSS 4.7
- CVE-2026-33176: Rails Active Support has a possible DoS vulnerability in its number helpersmediumCVSS 4EPSS 1.0%
- CVE-2026-33170: Ruby on Rails Active Support XSS in SafeBuffermediumCVSS 4EPSS 0.4%
- CVE-2026-33169: Rails Active Support has a possible ReDoS vulnerability in number_to_delimitedmediumCVSS 4EPSS 0.6%
- CVE-2023-38037: Active Support Possibly Discloses Locally Encrypted FileslowCVSS 3EPSS 0.3%
- CVE-2023-28120: Possible XSS Security Vulnerability in SafeBuffer#bytesplicelowCVSS 3.1EPSS 0.9%
- CVE-2023-22796: ReDoS based DoS vulnerability in Active Support's underscoreinfoEPSS 1.7%
- CVE-2020-8165: ActiveSupport potentially unintended unmarshalling of user-provided objects in MemCacheStore and RedisCacheStorelowCVSS 3.1EPSS 45.7%
- Moderate severity vulnerability that affects activesupportinfo
- CVE-2011-2197: rails Cross-site Scripting vulnerabilityinfoEPSS 2.0%
- CVE-2011-2932: activesupport Cross-site Scripting vulnerabilityinfoEPSS 2.5%
- CVE-2009-3086: actionpack and activesupport vulnerable to information leaksinfoEPSS 2.2%
- CVE-2012-1098: activesupport Cross-site Scripting vulnerabilityinfoEPSS 2.8%
- CVE-2009-3009: Cross site scripting that affects railsinfoEPSS 3.0%
- CVE-2013-0333: activesupport in Rails vulnerable to incorrect data conversioninfoEPSS 95.3%
- CVE-2012-3464: activesupport Cross-site Scripting vulnerabilityinfoEPSS 2.6%
- CVE-2013-1856: activesupport Improper Input Validation vulnerabilityinfoEPSS 2.1%
- CVE-2015-3226: activesupport Cross-site Scripting vulnerabilityinfoEPSS 2.8%
- CVE-2015-3227: activesupport vulnerable to Denial of Service via large XML document depthinfoEPSS 4.3%
Most severe activesupport (RubyGems) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-126080: Rails Active Support regular expression injection in safe_constantizehighCVSS 7.5
- CVE-2026-126075: Rails Active Support MessagePack unsafe serialization XSSmediumCVSS 4.7
- CVE-2026-33176: Rails Active Support has a possible DoS vulnerability in its number helpersmediumCVSS 4EPSS 1.0%
- CVE-2026-33169: Rails Active Support has a possible ReDoS vulnerability in number_to_delimitedmediumCVSS 4EPSS 0.6%
- CVE-2026-33170: Ruby on Rails Active Support XSS in SafeBuffermediumCVSS 4EPSS 0.4%
- CVE-2020-8165: ActiveSupport potentially unintended unmarshalling of user-provided objects in MemCacheStore and RedisCacheStorelowCVSS 3.1EPSS 45.7%
- CVE-2023-28120: Possible XSS Security Vulnerability in SafeBuffer#bytesplicelowCVSS 3.1EPSS 0.9%
- CVE-2023-38037: Active Support Possibly Discloses Locally Encrypted FileslowCVSS 3EPSS 0.3%
- CVE-2013-0333: activesupport in Rails vulnerable to incorrect data conversioninfoEPSS 95.3%
- CVE-2015-3227: activesupport vulnerable to Denial of Service via large XML document depthinfoEPSS 4.3%
Vulnerabilities per week
Nothing was published in the last eight weeks. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 2 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many activesupport (RubyGems) vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/activesupport)<a href="https://junglewise.ai/threats/technologies/activesupport"><img src="https://junglewise.ai/threats/technologies/activesupport/badge.svg" alt="activesupport (RubyGems) vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/activesupport.json, and this page as text at https://junglewise.ai/threats/technologies/activesupport.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "activesupport (RubyGems) vulnerabilities", https://junglewise.ai/threats/technologies/activesupport, 13 November 2026.