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Highest advisory severityHigh 1 vendor · 1 advisory

CVE-2026-19888

CVE-2026-19888: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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Red Hat

1 advisory
  • Advisory severityHigh7.5

    High [CVE-2026-19888] Denial of Service via malformed SCRAM client-final-message

    CVE-2026-19888Source published Source updated

    Denial of Service via malformed SCRAM client-final-message. Red Hat rates this important (CVSS 7.5). Weakness: CWE-476. Red Hat lists fixing advisory RHSA-2026:70698 with package pgbouncer-main-1.26.0-0.1.hum1. Affected product named by the advisory: Red Hat Hardened Images.

    Related products — impact not confirmed
    • Red Hat Hardened Images
    Source-reported affected versions
    • 1.25.2
    Source-reported fixed versions
    • pgbouncer-main-1.26.0-0.1.hum1
    • RHSA-2026:70698
    Mitigation guidance
    • To mitigate this issue, restrict network access to the PgBouncer service to only trusted clients or localhost. This can be achieved by configuring firewall rules to limit incoming connections to the PgBouncer port or by setting the `listen_addr` parameter in the `pgbouncer.ini` configuration file to `localhost` or specific trusted IP addresses. After modifying the `pgbouncer.ini` file, the PgBouncer service must be restarted for the changes to take effect, which will temporarily disrupt existing connections. Example for `pgbouncer.ini`: ``` [pgbouncer] listen_addr = 127.0.0.1 ``` Example for firewall (adjust port if necessary, default is 6432): ```bash firewall-cmd --permanent --zone=public --remove-port=6432/tcp firewall-cmd --permanent --zone=trusted --add-source=192.168.1.0/24 --add-port=6432/tcp firewall-cmd --reload ```
    Full advisory and evidenceOpen source bulletin

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