How severe is CVE-2026-27742?

CVE-2026-27742 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-27742 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27742?

CVE-2026-27742 affects Bludit. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27742?

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

Does CVE-2026-27742 have an EU (EUVD) identifier?

Yes. CVE-2026-27742 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7477.

When was CVE-2026-27742 published?

CVE-2026-27742 was published on 2026-02-23 and last updated on 2026-06-17.

CVE-2026-27742

CVE-2026-27742 is a medium-severity vulnerability in Bludit with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v4: 5.1
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-7477
Weakness: CWE-79
Affected product: Bludit
Published: 2026-02-23
Last modified: 2026-06-17

Description

Bludit version 3.16.2 contains a stored cross-site scripting (XSS) vulnerability in the post content functionality. The application performs client-side sanitation of content input but does not enforce equivalent sanitation on the server side. An authenticated user can inject arbitrary JavaScript into the content field of a post, which is stored and later rendered to other users without proper output encoding. When viewed, the injected script executes in the context of the victim’s browser, allowing session hijacking, credential theft, content manipulation, or other actions within the user’s privileges.

Frequently asked questions

What is CVE-2026-27742?: Bludit version 3.16.2 contains a stored cross-site scripting (XSS) vulnerability in the post content functionality. The application performs client-side sanitation of content input but does not enforce equivalent sanitation on the server side. An authenticated user can inject arbitrary JavaScript into the content field of a post, which is stored and later rendered to other users without proper output encoding. When viewed, the injected script executes in the context of the victim’s browser, allowing session hijacking, credential theft, content manipulation, or other actions within the user’s privileges.
How severe is CVE-2026-27742?: CVE-2026-27742 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-27742 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27742?: CVE-2026-27742 affects Bludit. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27742?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-27742 have an EU (EUVD) identifier?: Yes. CVE-2026-27742 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7477.
When was CVE-2026-27742 published?: CVE-2026-27742 was published on 2026-02-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:bludit:bludit:*:*:*:*:*:*:*:*

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