Event Monitor Cyber
EM-20261105-I86N VulnerabilityHigh severity

ModSecurity Vulnerability (CVE-2026-104269)

CVE-2026-104269

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Status
Developing

Since : signals keep joining.

First Signal
Nov 05 15:51 UTCC41 Red Hat Security Data
Page Born
Nov 05 16:17 UTCsecond source joined
Last Signal
Nov 05 16:17 UTC22 hours before snapshot
Sources
21 official · 1 research, news or crowd
Open For
20 hoursso 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 05 16:17 UTC
    C6 NVD published
  2. Scored: reached
    Nov 05 16:17 UTC
    CVSS 8.6
  3. Exploited: not yet
    Not yet
    No exploitation reported
  4. Advisories: not yet
    Not yet
    None yet
  5. Vendor Response: reached
    Nov 05 15:51 UTC
    C41 published
  6. Resolved: not yet
    Not yet
    After 14 quiet days

Timeline

12:0018:00Nov 6BornC41 Red Hat Security DataC6 NVD CVE API 2.0

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

Signals

  1. CVE-2026-104269 (CVSS 8.6) (opens source in a new tab) ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. From 3.0.0 until 3.0.17, ModSecurity's multipart parser does not apply the RFC 2231 filename* parameter… High severityDatabaseC6 NVD CVE API 2.0
  2. Red Hat: CVE-2026-104269 (important) (opens source in a new tab) modsecurity: mod_security: ModSecurity: Security inspection bypass via multipart filename parameter discrepancy High severityVendorC41 Red Hat Security Data