Event Monitor Cyber
EM-20261109-426N VulnerabilityMedium severity

OmniAuth Vulnerability (CVE-2026-63183)

CVE-2026-63183

Share
Status
Developing

Since : signals keep joining.

First Signal
Nov 04 19:07 UTCC41 Red Hat Security Data
Page Born
Nov 09 21:49 UTCsecond source joined
Last Signal
Nov 09 21:49 UTC4 hours before snapshot
Sources
21 official · 1 research, news or crowd
Open For
5 daysso far

Life Of This Page

  1. 1
    Born
    A second, independent source names it.
  2. 2
    Developing · Now
    New signals join; severity can move.
  3. 3
    Confirmed
    Not yet
    CISA KEV lists it, or exploitation in the wild is reported.
  4. 4
    Resolved
    Not yet
    Past the fix deadline and 14 days with no new signal.
  5. 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

  1. Disclosed: reached
    Nov 04 19:17 UTC
    C6 NVD published
  2. Scored: reached
    Nov 04 19:17 UTC
    CVSS 6.9 · EPSS 0.2%
  3. Exploited: not yet
    Not yet
    No exploitation reported
  4. Advisories: not yet
    Not yet
    None yet
  5. Vendor Response: reached
    Nov 04 19:07 UTC
    C41 published
  6. Resolved: not yet
    Not yet
    After 14 quiet days

Timeline

Nov 512:00Nov 612:00Nov 712:00Nov 812:00Nov 912:00BornC41 Red Hat Security DataC26 GitHub Advisory Database

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

Signals

  1. GHSA-m27g-v28p-f9fx / CVE-2026-63183: OmniAuth: Host Header Injection Vulnerability (opens source in a new tab) rubygems:omniauth Med severityDatabaseC26 GitHub Advisory Database
  2. Red Hat: CVE-2026-63183 (moderate) (opens source in a new tab) omniauth: OmniAuth: Host header injection via forged HTTP Host header Med severityVendorC41 Red Hat Security Data