How severe is CVE-2026-33739?

CVE-2026-33739 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity low, and availability low.

Is CVE-2026-33739 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33739?

CVE-2026-33739 affects Fogproject. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33739?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-33739 have an EU (EUVD) identifier?

Yes. CVE-2026-33739 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16779.

When was CVE-2026-33739 published?

CVE-2026-33739 was published on 2026-03-27 and last updated on 2026-06-17.

CVE-2026-33739

CVE-2026-33739 is a medium-severity vulnerability in Fogproject with a CVSS 3.x base score of 5.7. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.7)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16779
Weakness: CWE-79
Affected product: Fogproject
Published: 2026-03-27
Last modified: 2026-06-17

Description

FOG is a free open-source cloning/imaging/rescue suite/inventory management system. Prior to 1.5.10.1812, the listing tables on multiple management pages (Host, Storage, Group, Image, Printer, Snapin) are vulnerable to Stored Cross-Site Scripting (XSS), due to insufficient server-side parameter sanitization in record creations/updates and a lack of HTML escaping in listing tables. Version 1.5.10.1812 patches the issue.

Frequently asked questions

What is CVE-2026-33739?: FOG is a free open-source cloning/imaging/rescue suite/inventory management system. Prior to 1.5.10.1812, the listing tables on multiple management pages (Host, Storage, Group, Image, Printer, Snapin) are vulnerable to Stored Cross-Site Scripting (XSS), due to insufficient server-side parameter sanitization in record creations/updates and a lack of HTML escaping in listing tables. Version 1.5.10.1812 patches the issue.
How severe is CVE-2026-33739?: CVE-2026-33739 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity low, and availability low.
Is CVE-2026-33739 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33739?: CVE-2026-33739 affects Fogproject. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33739?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-33739 have an EU (EUVD) identifier?: Yes. CVE-2026-33739 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16779.
When was CVE-2026-33739 published?: CVE-2026-33739 was published on 2026-03-27 and last updated on 2026-06-17.

References

https://github.com/FOGProject/fogproject/security/advisories/GHSA-8m2f-4x7g-p8f3

Affected products (1)

cpe:2.3:a:fogproject:fogproject:*:*:*:*:*:*:*:*

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