Technology · Rails
Rails Action Pack vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 6 vulnerabilities in Rails Action Pack: 6 in the last 7 days and 6 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-126083, was published on 10 November 2026. Nothing was published in the last eight weeks.
- Last 7 days
- 6
- Last 90 days
- 6
- Critical, all time
- 0
- Exploited in the wild
- 0
Latest Rails Action Pack vulnerabilities
- CVE-2026-126083: Rails Action Pack remote IP spoofing in request handlinghighCVSS 7.4
- CVE-2026-126081: Rails Action Pack mass assignment bypass in Parameters#each_keyhighCVSS 7.5EPSS 0.6%
- CVE-2026-126077: Rails Action Pack session cookie exposure in cached responsesmediumCVSS 6.8EPSS 0.4%
- CVE-2026-126076: Ruby on Rails Action Pack session restoration after logoutmediumCVSS 4.2
- CVE-2026-126073: Rails Action Pack cache poisoning via content-type negotiationmediumCVSS 4.8
- CVE-2026-126072: Rails Action Pack thread exhaustion in ActionController::LivemediumCVSS 5.9EPSS 0.4%
Most severe Rails Action Pack vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-126081: Rails Action Pack mass assignment bypass in Parameters#each_keyhighCVSS 7.5EPSS 0.6%
- CVE-2026-126083: Rails Action Pack remote IP spoofing in request handlinghighCVSS 7.4
- CVE-2026-126077: Rails Action Pack session cookie exposure in cached responsesmediumCVSS 6.8EPSS 0.4%
- CVE-2026-126072: Rails Action Pack thread exhaustion in ActionController::LivemediumCVSS 5.9EPSS 0.4%
- CVE-2026-126073: Rails Action Pack cache poisoning via content-type negotiationmediumCVSS 4.8
- CVE-2026-126076: Ruby on Rails Action Pack session restoration after logoutmediumCVSS 4.2
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 | 6 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Rails Action Pack vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/action-pack)<a href="https://junglewise.ai/threats/technologies/action-pack"><img src="https://junglewise.ai/threats/technologies/action-pack/badge.svg" alt="Rails Action Pack 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/action-pack.json, and this page as text at https://junglewise.ai/threats/technologies/action-pack.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, "Rails Action Pack vulnerabilities", https://junglewise.ai/threats/technologies/action-pack, 13 November 2026.