[UPDATE] [medium] PostgreSQL JDBC Driver: Vulnerability allows Denial of Service
A remote, anonymous attacker can exploit a vulnerability in PostgreSQL JDBC Driver to conduct a Denial of Service attack.
CSIRTS triage
- What
- A vulnerability allows a remote attacker to conduct a Denial of Service attack.
- Who is affected
- Deployments of PostgreSQL JDBC Driver are affected.
- Urgency
- Remediation is important due to the potential for Denial of Service, although exploitation has not been reported.
- Action
- Update to the latest version of PostgreSQL JDBC Driver.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1754
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-421980.77% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 52% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-42198 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- high[NEW] [high] Atlassian Bamboo, Bitbucket, Confluence, Fisheye, Crucible, Jira and Jira Service Management: Mul…cert-bund
- high[UPDATE] [high] Atlassian Bamboo, Bitbucket, Confluence, Fisheye, Crucible, Jira and Jira Service Management: …cert-bund
- high[NEW] [high] Oracle Communications: Multiple vulnerabilitiescert-bund
- unknownMultiple vulnerabilities in Atlassian products (July 27, 2026)cert-fr-avis
- high[UPDATE] [high] Atlassian products (Bamboo, Bitbucket, Confluence, Crucible, Fisheye, and Jira): Multiple vuln…cert-bund
Recent advisories for PostgreSQL JDBC Driver
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- highGHSA-j92g-9f8w-j867: PostgreSQL JDBC Driver: Silent channel-binding authentication downgrade via unsupported c…ghsa · 2026-07-21
- medium[NEW] [medium] PostgreSQL JDBC Driver: Vulnerability allows bypassing security measurescert-bund · 2026-07-21
- mediumCVE-2026-54291: pgjdbc is an open source postgresql JDBC Driver. In releases 42.7.4 through 42.7.11, channelBi…nvd · 2026-07-06
- lowPrivilege Escalation in Aurora PostgreSQL using AWS JDBC Wrapper, AWS Go Wrapper, AWS NodeJS Wrapper, AWS Pyth…aws · 2026-06-05
More from CERT-Bund (BSI) Security Advisories
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- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of service2026-07-31
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- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow unspecified attack2026-07-31