How severe is CVE-2026-2731?

CVE-2026-2731 has a CVSS 4.0 base score of 10.0, rated critical severity.

Is CVE-2026-2731 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-2731?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-2731 have an EU (EUVD) identifier?

Yes. CVE-2026-2731 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7971.

When was CVE-2026-2731 published?

CVE-2026-2731 was published on 2026-02-19 and last updated on 2026-06-17.

CVE-2026-2731

CVE-2026-2731 is a critical-severity vulnerability with a CVSS 4.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Critical (CVSS 4.0 base score 10.0)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-7971
Weakness: CWE-22
Published: 2026-02-19
Last modified: 2026-06-17

Description

Path traversal and content injection in JobRunnerBackground.aspx in DynamicWeb 8 (all) and 9 (<9.19.7 and <9.20.3) allows unauthenticated attackers to execute code via simple web requests

Frequently asked questions

What is CVE-2026-2731?: Path traversal and content injection in JobRunnerBackground.aspx in DynamicWeb 8 (all) and 9 (<9.19.7 and <9.20.3) allows unauthenticated attackers to execute code via simple web requests
How severe is CVE-2026-2731?: CVE-2026-2731 has a CVSS 4.0 base score of 10.0, rated critical severity.
Is CVE-2026-2731 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-2731?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-2731 have an EU (EUVD) identifier?: Yes. CVE-2026-2731 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7971.
When was CVE-2026-2731 published?: CVE-2026-2731 was published on 2026-02-19 and last updated on 2026-06-17.

References

https://doc.dynamicweb.dev/documentation/fundamentals/dw10release/security-reports.html#january-19th-2026---unauthenticated-rce-dynamicweb-9-and-dynamicweb-8

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