CVE-2026-4427
Github.com/jackc/pgproto3: pgproto3: denial of service via negative field length in datarow message
Description
Rejected reason: Duplicate of CVE-2026-32286
INFO
Published Date :
March 19, 2026, 3:16 p.m.
Last Modified :
March 30, 2026, 8:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 53f830b8-0a3f-465b-8143-3b8a9948e749 | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update pgproto3 to the latest secure version.
- Ensure all inputs are strictly validated.
- Monitor server logs for related errors.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-4427 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-4427 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Rejected by [email protected]
Mar. 30, 2026
Action Type Old Value New Value -
CVE Modified by [email protected]
Mar. 30, 2026
Action Type Old Value New Value Changed 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. Rejected reason: Duplicate of CVE-2026-32286 Removed CVSS V3.1 Red Hat, Inc.: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Removed CWE Red Hat, Inc.: CWE-129 Removed Reference Red Hat, Inc.: https://access.redhat.com/security/cve/CVE-2026-4427 Removed Reference Red Hat, Inc.: https://bugzilla.redhat.com/show_bug.cgi?id=2448626 Removed Reference Red Hat, Inc.: https://github.com/golang/vulndb/issues/4518 Removed Reference Red Hat, Inc.: https://github.com/jackc/pgproto3 Removed Reference Red Hat, Inc.: https://github.com/jackc/pgx/issues/2507 Removed Reference Red Hat, Inc.: https://securityinfinity.com/research/memory-safety-vulnerabilities-in-go-postgresql-wire-protocol-parsers-pgproto3-pgx -
New CVE Received by [email protected]
Mar. 19, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-129 Added Reference https://access.redhat.com/security/cve/CVE-2026-4427 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2448626 Added Reference https://github.com/golang/vulndb/issues/4518 Added Reference https://github.com/jackc/pgproto3 Added Reference https://github.com/jackc/pgx/issues/2507 Added Reference https://securityinfinity.com/research/memory-safety-vulnerabilities-in-go-postgresql-wire-protocol-parsers-pgproto3-pgx