[UPDATE] [high] Fluentd: Multiple vulnerabilities
A remote, anonymous attacker can exploit multiple vulnerabilities in Fluentd to execute arbitrary code, disclose information, or cause a Denial of Service.
CSIRTS triage
- What
- Multiple vulnerabilities allow a remote, anonymous attacker to execute arbitrary code, disclose information, or cause a Denial of Service.
- Who is affected
- All deployments of Fluentd are at risk.
- Urgency
- High urgency for remediation due to the severity and potential for exploitation.
- Action
- Patch Fluentd to the latest version to address these vulnerabilities.
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-2026-2096
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.
- Moderate exploitation riskCVE-2026-440241.1% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 63% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-440250.47% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 39% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-441600.62% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 47% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-441610.44% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 37% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-44024 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-44025 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-44160 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-44161 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownMultiple vulnerabilities in IBM products (July 31, 2026)cert-fr-avis
- highCVE-2026-44161: Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS…nvd
- highCVE-2026-44160: Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS…nvd
- highCVE-2026-44025: Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS…nvd
- criticalCVE-2026-44024: Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS…nvd
- unknownMultiple vulnerabilities in Fluentdjvn
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