CVE-2026-107349

highpriority · track · 0EPSS 0.004 · 34 %ileDEUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.40% (34th) EPSS
CVSS 7.5 · high
Is it mine?
3 products
Check your exposure
Who says so?
2 sources
cert_bund · osv

EPSS · scored 2026-10-27

An infinite loop in PgBouncer 1.20.0 through 1.26.0 allows an unauthenticated remote attacker to cause a denial of service. A StartupMessage whose options parameter contains an empty parameter name, such as "-c=", makes the ignore_startup_parameters list lookup loop forever. Because PgBouncer serves all clients from a single process, this saturates a CPU core and makes PgBouncer unresponsive to all clients until the process is restarted.

01

cvss

Technical severity, 0–10. One row per scoring source.

7.5
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondaryexploitability 3.9 · impact 3.6
v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-400USCWE-835US
04

affected products (3)

Products and version ranges known to be affected.

05

advisories (2)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-3906PgBouncer: Mehrere SchwachstellenDeutsch2026-10-13csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in PgBouncer ausnutzen, um einen Denial of Service Angriff durchzuführen, Sicherheitsvorkehrungen zu umgehen oder Adminrechte zu erlangen.

  • BIT-pgbouncer-2026-107349Infinite loop on empty option name in startup options parameter in PgBouncer2026-10-21vendor · osvUS

    An infinite loop in PgBouncer 1.20.0 through 1.26.0 allows an unauthenticated remote attacker to cause a denial of service. A StartupMessage whose options parameter contains an empty parameter name, such as "-c=", makes the ignore_startup_parameters list lookup loop forever. Because PgBouncer serves all clients from a single process, this saturates a CPU core and makes PgBouncer unresponsive to all clients until the process is restarted.

06

sources

Which sources assert this record, and when.

cert_bundosvNVDCVE.orgMITRE
published 2026-10-14modified 2026-10-16
07

references (1) nvd

External citations — patches, advisories, analysis.

scry

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