CVE-2026-19888
📛 CVE Title
NULL pointer dereference in SCRAM client-final-message parsing in PgBouncer
Description
Missing validation of a mandatory attribute in the SCRAM client-final-message parser in PgBouncer through 1.25.2 allows an unauthenticated remote attacker to crash the process. A malformed message can make the parser report success while leaving a required value unset, which is then dereferenced as a NULL pointer. The crash occurs before any credential is verified, so no valid account is required. Because PgBouncer serves all clients from a single process, this terminates every pooled connection.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- PostgreSQL
- CVSS severity
- HIGH
- CVSS score
- 7.5 / 10
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Effective score
- 7.5 / 10 HIGH source: CNA overview
- CWE(s)
-
CWE-476 - Reserved
- 2026-08-14
- Published
- 2026-09-23 16:04 UTC
- Last updated
- 2026-09-23 16:46 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/19xxx/CVE-2026-19888.json
- Linked Threat
- CVE-2026-19888 — NULL pointer dereference in SCRAM client-final-message parsing in PgBouncer
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-09-23 17:17:14 UTC
- NVD last modified
- 2026-09-23 19:40:10 UTC
- NVD CVSS v3.1
- 7.5 / 10 HIGH source: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Exploitability subscore
- 3.9 / 10
- Impact subscore
- 3.6 / 10
NVD / KEV / EPSS data refreshed 2026-09-24 04:38 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-85365 - Assigner
- PostgreSQL
- Published
- Sep 23, 2026, 4:04:48 PM
- Updated
- Sep 23, 2026, 4:46:13 PM
- EUVD base score (CVSS 3.1)
-
7.5 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EUVD-reported EPSS
- 0.0000
- Vendors
- n/a
- Products
-
PgBouncer (0 ≤1.25.2)
- Aliases
-
GHSA-w79m-39mq-x36c
ENISA description: Missing validation of a mandatory attribute in the SCRAM client-final-message parser in PgBouncer through 1.25.2 allows an unauthenticated remote attacker to crash the process. A malformed message can make the parser report success while leaving a required value unset, which is then dereferenced as a NULL pointer. The crash occurs before any credential is verified, so no valid account is required. Because PgBouncer serves all clients from a single process, this terminates every pooled connection.
EUVD references (1)
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| n/a | PgBouncer |
0 (affected)
|
— |
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
Web references (0)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
No web references attached yet.
NVD-tagged references (1)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://www.pgbouncer.org/changelog.html f86ef6dc-4d3a-42ad-8f28-e6d5547a5007
Remediations (10)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:epatch.pa.gov
Why does PATCH exist? Its purpose is to better enable the public to obtain criminal history record checks. The repository was created and is maintained in accordance with Pennsylvania's Criminal History Information Act contained in Chapter 91 of Title 18, Crimes Code. This Act also directs the Pennsylvania State Police (PSP) to disseminate criminal history data to criminal justice agencies ...
2026-09-24 11:14 UTC -
web:epatch.pa.gov
Check the status of your Pennsylvania criminal history record through this platform.
2026-09-24 11:14 UTC -
web:patch.com
The best breaking news, stories, and events from the Patch network of local news sites
2026-09-24 11:14 UTC -
web:support.microsoft.com
This Hotpatch update for Windows 11, version 25H2 and 24H2 (KB5120994) includes security improvements. To learn more about differences between security updates, optional non-security preview updates, out-of-band (OOB) updates, and continuous innovation, see Windows monthly updates explained. For information on Windows update terminology, see the different types of Windows software updates. To ...
2026-09-24 11:14 UTC -
web:windowsreport.com
Microsoft's September 2026 Patch Tuesday fixes a record 966 security vulnerabilities, including two zero-days that attackers are actively exploiting. Microsoft has released Patch Tuesday updates for Windows 11 alongside Windows 10 KB5122878, delivering what appears to be the company's largest ...
2026-09-24 11:14 UTC -
web:www.action1.com
In this issue: September 2026 Patch Tuesday updates from Microsoft, featuring zero-day vulnerabilities and critical security flaws.
2026-09-24 11:14 UTC -
web:www.automox.com
September 2026 Patch Tuesday ships a record 973 CVEs , led by two exploited elevation of privilege bugs in the Windows Update Stack and ALPC. Plus unauthenticated RCE in DNS and Remote Desktop Services, a SQL Copilot read-only bypass, and an Outlook Reading Pane RCE.
2026-09-24 11:14 UTC -
web:www.ivanti.com
Microsoft's September 2026 Patch Tuesday resolves 973 CVEs including 119 rated Critical and two zero-days, both confirmed exploited in the wild.
2026-09-24 11:14 UTC -
web:www.oracle.com
Oracle Critical Security Patch Update Advisory - August 2026 Description. A Critical Security Patch Update (CSPU) provides targeted, high-priority security fixes in a smaller, mor
2026-09-24 11:14 UTC -
web:zecurit.com
Get the complete breakdown of Microsoft's September 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .
2026-09-24 11:14 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-19888.json.
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