RCE via path traversal in a widely deployed web CMS; unauthenticated access could disrupt many orgs.
CVE-2026-2731
CRITICAL RCE via path traversal in DynamicWeb JobRunnerBackground.aspx
Is CVE-2026-2731 being exploited?
Not confirmed. CVE-2026-2731 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 0.53% probability of exploitation in the next 30 days.
How severe is CVE-2026-2731?
CVE-2026-2731 is rated Critical with a CVSS score of 10.0. 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-2026-2731?
Yes. A fix has been recorded for CVE-2026-2731. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-2731 affect?
CVE-2026-2731 affects DynamicWeb 8 (all), DynamicWeb 9 <9.19.7 and <9.20.3. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-2731?
Upgrade to fixed versions (9.19.7+/9.20.3+) or vendor patch.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated remote code execution via crafted requests; full server takeover risk.
Immediate action required
- affected8
- affected>= 9 and < 9.19.7
- affected>= 9.20.0 and < 9.20.3
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.