CVE-2026-32286 | Denial of service in github.com/jackc/pgproto3/v2

The DataRow.Decode function fails to properly validate field lengths. A malicious or compromised PostgreSQL server can send a DataRow message with a negative field length, causing a slice bounds out of range panic.

Published: 2026-03-26 Last update: 2026-06-03 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-32286 is rated Low Risk (36/100): CVSS High severity, with low exploitation likelihood (EPSS 0.06%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-32286

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-01 0.02% 0.06% +0.04%
2 2026-03-27 — 0.02% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-32286

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2026-32286

GitHub Security Advisory for CVE-2026-32286

GHSA-jqcq-xjh3-6g23 · Severity: high · Ecosystem: go — Denial of service in github.com/jackc/pgproto3/v2

OS Trackers for CVE-2026-32286

vendor priority summary link
debian not yet assigned CVE-2026-32286 not yet assigned priority: Debian including 1 source packages (golang-github-jackc-pgproto3), 4 status rows across 4 suites (bookworm, forky, sid, trixie): open 2, resolved 2. https://security-tracker.debian.org/tracker/CVE-2026-32286
redhat high — https://access.redhat.com/security/cve/CVE-2026-32286
suse high — https://www.suse.com/security/cve/CVE-2026-32286/
ubuntu medium CVE-2026-32286 medium priority: Ubuntu including 1 source packages (golang-github-jackc-pgproto3), 4 status rows across 4 suites (jammy, noble, questing, upstream): needs-triage 2, DNE 1, released 1. https://ubuntu.com/security/CVE-2026-32286

Affected software / configurations for CVE-2026-32286

Vendor Product Version Raw CPE
jackc pgproto3 >= 2.0.0, <= 2.3.3 cpe:2.3:a:jackc:pgproto3:*:*:*:*:*:go:*:*

References for CVE-2026-32286

cvelogic Threat Intelligence