EM-20261110-EHP3 VulnerabilityInfo severity

Action Pack Vulnerability (CVE-2026-126067)

CVE-2026-126067

Status

Developing

Since Nov 10 21:25 UTC: signals keep joining.

First Signal: Nov 10 20:29 UTCC41 Red Hat Security Data
Page Born: Nov 10 21:25 UTCsecond source joined
Last Signal: Nov 10 21:25 UTC26 hours before snapshot
Sources: 21 official · 1 research, news or crowd
Open For: 16 hoursso far

Life Of This Page

1
Born

Nov 10 21:25 UTC
A second, independent source names it.
2
Developing · Now

Nov 10 21:25 UTC
New signals join; severity can move.
3
Confirmed

Not yet
CISA KEV lists it, or exploitation in the wild is reported.
4
Resolved

Not yet
Past the fix deadline and 14 days with no new signal.
5
Archived

Not yet
30 days after resolved. Read only; the link keeps working. Reopens if it comes back.

The ID never changes, and earlier addresses keep working. A correction is logged, never overwritten. If two pages turn out to be one incident, the later one points to the earlier.

Vulnerability Lifecycle

Disclosed: reached

Nov 10 21:19 UTC
C6 NVD published
Scored: reached

Nov 10 21:19 UTC
CVSS 3.1
Exploited: not yet

Not yet
No exploitation reported
Advisories: not yet

Not yet
None yet
Vendor Response: reached

Nov 10 20:29 UTC
C41 published
Resolved: not yet

Not yet
After 14 quiet days

Timeline

Point at a mark to read it. Squares are signals, colored by severity; every one is also listed under Signals.

Signals

Nov 10 21:25 UTCGHSA-gmj8-hvj3-49mw / CVE-2026-126067: Action Pack: Missing SameSite attribute on session cookies from Action Pack session stores (opens source in a new tab) rubygems:actionpack, rubygems:actionpack Info severityDatabaseC26 GitHub Advisory Database
Nov 10 20:29 UTCRed Hat: CVE-2026-126067 (low) (opens source in a new tab) actionpack: Action Pack: Cross-Site Request Forgery via missing SameSite attribute on session cookies Info severityVendorC41 Red Hat Security Data