ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-107349

An infinite loop in PgBouncer 1.20.0 through 1.26.0 allows an unauthenticated remote attacker to cause a denial of service.

Published Oct 14, 2026 · catalog updated Oct 15, 2026 · An infinite loop in

Check if you run it

No confirmed exploitation is on record for CVE-2026-107349. EPSS is 0.42%. Act only if a listed version of An infinite loop in is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (An infinite loop in).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.42%
Remediation
Advisory link
Affected products
Debian:12 pgbouncer · Debian:13 pgbouncer · Debian:14 pgbouncer

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:12 pgbouncer1.18.0-1, 1.18.0-1+deb12u1, 1.19.0-1
  • Debian:13 pgbouncer1.24.1-1, 1.24.1-1+deb13u1, 1.24.1-1+deb13u2
  • Debian:14 pgbouncer1.24.1-1, 1.25.0-1, 1.25.0-2

How to fix CVE-2026-107349

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-107349. EPSS is 0.42%. Act only if a listed version of An infinite loop in is installed.

Which versions are affected?

Compare what you have installed with 1.18.0-1, 1.18.0-1+deb12u1, 1.19.0-1, 1.24.1-1, 1.24.1-1+deb13u1, 1.24.1-1+deb13u2, 1.24.1-1, 1.25.0-1, 1.25.0-2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-400: Uncontrolled Resource Consumption; CWE-835: Infinite Loop. EPSS 0.42%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 14, 2026 · OpenSSF OSV / OSV Scanner

    Detected

  2. Oct 14, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    The description or metadata changed.

  3. Oct 14, 2026 · NIST NVD

    Updated

    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 al

  4. Oct 15, 2026 · NIST NVD

    Updated

    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 al

Sources

  • CVE.orgVulnerability recordCVE-2026-107349

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-107349

    30-day exploitation probability 0.4%

    first.org
  • NIST NVDVulnerability recordCVE-2026-107349

    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. Beca

    nvd.nist.gov
  • OpenSSF OSV / OSV ScannerPackage advisoryDEBIAN-CVE-2026-107349
    osv.dev

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.