CVE-2026-4427
Duplicate Advisory: pgproto3: Negative field length panics in DataRow.Decode
7.5
HIGH
CVSS 3.1
Description
A flaw was found in pgproto3. A malicious or compromised PostgreSQL server can exploit this by sending a DataRow message with a negative field length. This input validation vulnerability can lead to a denial of service (DoS) due to a slice bounds out of range panic.
How to fix CVE-2026-4427
No fixed version has been published yet. Mitigate by removing the affected package or applying upstream guidance from the references below.
- Debian/golang-github-jackc-pgproto3—no fix listed
- —no fix listed
Is CVE-2026-4427 being exploited?
No exploitation signal available. Neither CISA KEV nor a current EPSS score has been published for CVE-2026-4427.
Affected packages (2)
- from 0
- from 0, <= 2.3.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |