CVE-2026-57898
Unauthenticated arbitrary file write via AAS thumbnail API in Eclipse BaSyx (RCE risk).
Is CVE-2026-57898 being exploited?
Not confirmed. CVE-2026-57898 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.68% probability of exploitation in the next 30 days.
How severe is CVE-2026-57898?
CVE-2026-57898 is rated Critical with a CVSS score of 9.0. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-57898?
Yes. A fix has been recorded for CVE-2026-57898. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-57898 affect?
CVE-2026-57898 affects Eclipse BaSyx Java Server SDK 2.0.0-milestone-05 through 2.0.0-milestone-12, Deployments using MongoDB GridFS backend for thumbnails, Servers where Java process has filesystem write permissions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-57898?
Upgrade to 2.0.0-milestone-13; or disable MongoDB backend and restrict filesystem write perms.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attacker can upload files with traversal/absolute paths to overwrite server files via MongoDB backend, potentially leading to remote code execution.
Immediate action required
- affected>= 2.0.0-milestone-05 and < 2.0.0-milestone-13
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.