EM-20261030-V3ZM VulnerabilityMedium severity

joserfc Vulnerability (CVE-2026-119284)

CVE-2026-119284

Status

Developing

Since Oct 30 14:54 UTC: signals keep joining.

First Signal: Oct 29 21:33 UTCC41 Red Hat Security Data
Page Born: Oct 30 14:54 UTCsecond source joined
Last Signal: Oct 30 14:54 UTC5 days before snapshot
Sources: 21 official · 1 research, news or crowd
Open For: 5 daysso far

Life Of This Page

1
Born

Oct 30 14:54 UTC
A second, independent source names it.
2
Developing · Now

Oct 30 14:54 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 address and ID never change. 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

Oct 29 21:33 UTC
C41 first to name it
Scored: reached

Oct 29 21:33 UTC
No CVSS yet · EPSS 0.2%
Exploited: not yet

Not yet
No exploitation reported
Advisories: not yet

Not yet
None yet
Vendor Response: reached

Oct 29 21:33 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

Oct 30 14:54 UTCGHSA-9pg5-8c7x-5hfx / CVE-2026-119284: jo erfc: Compact JWS ize guard allocate attacker-controlled egment before rejection (opens source in a new tab) pip:joserfc Med severityDatabaseC26 GitHub Advisory Database
Oct 29 21:33 UTCRed Hat: CVE-2026-119284 (moderate) (opens source in a new tab) joserfc: joserfc: Denial of Service via excessive memory allocation during JWS deserialization Med severityVendorC41 Red Hat Security Data