CVE-2026-92873

Unauthenticated Promotion of Watchdog Nodes to Leader in Pgpool‑II

Published Sep 30, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Description

Pgpool-II contains an incorrect implementation of an authentication algorithm, which may allow an unauthenticated attacker to promote an arbitrary watchdog node to the leader node.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Pgpool Global Development Group

Pgpool-II

unaffected

Version	Status	Constraints
`4.7.0`	affected	≤ 4.7.2
`4.6.0`	affected	≤ 4.6.7
`4.5.0`	affected	≤ 4.5.12
`4.4.0`	affected	≤ 4.4.17
`4.3.0`	affected	≤ 4.3.20
`3.5.x`	affected	≤ 4.2.x

No data.

Vendor Product Versions

Pgpool Global Development Group

Pgpool-ii

Version	Status	Scheme	Platform
`[4.7.0,4.7.2]`	affected	semver	—
`[4.6.0,4.6.7]`	affected	semver	—
`[4.5.0,4.5.12]`	affected	semver	—
`[4.4.0,4.4.17]`	affected	semver	—
`[4.3.0,4.3.20]`	affected	semver	—
`[3.5.x,4.2.x]`	affected	generic	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

No advisories available

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.314% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://jvn.jp/en/jp/JVN22475874/
https://pgpool.net/news/2026-09-29/

History

Sep 30, 2026 9:00 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Pgpool Global Development Group Pgpool Global Development Group pgpool-ii
Vendors & Products		Pgpool Global Development Group Pgpool Global Development Group pgpool-ii

Sep 30, 2026 6:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Sep 30, 2026 2:00 PM Title updated View changes

Type	Values Removed	Values Added
Title		Unauthenticated Promotion of Watchdog Nodes to Leader in Pgpool‑II

Sep 30, 2026 8:00 AM Description updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		Pgpool-II contains an incorrect implementation of an authentication algorithm, which may allow an unauthenticated attacker to promote an arbitrary watchdog node to the leader node.
Weaknesses		CWE-303
References		https://jvn.jp/en/jp/JVN22475874/ https://pgpool.net/news/2026-09-29/
Metrics		cvssV3_0 `{'score': 7.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}` cvssV4_0 `{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N'}`