How severe is CVE-2026-11903?

CVE-2026-11903 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-11903 being actively exploited?

It is not currently listed in CISA's Known Exploited Vulnerabilities catalog, and no EPSS exploit-prediction score is available yet.

How do I fix CVE-2026-11903?

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

When was CVE-2026-11903 published?

CVE-2026-11903 was published on 2026-07-08.

CVE-2026-11903

CVE-2026-11903 is a high-severity vulnerability with a CVSS 3.x base score of 8.0. The underlying weakness is classified as CWE-79.

Key facts

Severity: High (CVSS 3.x base score 8.0)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Published: 2026-07-08
Last modified: 2026-07-08

Description

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Progress MOVEit Transfer (Ad Hoc module). This issue affects MOVEit Transfer: from 2026.0.0 before 2026.0.1, from 2025.1.0 before 2025.1.4, from 2025.0.0 before 2025.0.8.

Frequently asked questions

What is CVE-2026-11903?: Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Progress MOVEit Transfer (Ad Hoc module). This issue affects MOVEit Transfer: from 2026.0.0 before 2026.0.1, from 2025.1.0 before 2025.1.4, from 2025.0.0 before 2025.0.8.
How severe is CVE-2026-11903?: CVE-2026-11903 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-11903 being actively exploited?: It is not currently listed in CISA's Known Exploited Vulnerabilities catalog, and no EPSS exploit-prediction score is available yet.
How do I fix CVE-2026-11903?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-11903 published?: CVE-2026-11903 was published on 2026-07-08.

References

https://community.progress.com/s/article/MOVEit-Transfer-Critical-Security-Bulletin-June-2026

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