How severe is CVE-2026-4909?

CVE-2026-4909 has a CVSS 3.x base score of 2.4, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-4909 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-4909?

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

Does CVE-2026-4909 have an EU (EUVD) identifier?

Yes. CVE-2026-4909 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16529.

When was CVE-2026-4909 published?

CVE-2026-4909 was published on 2026-03-27 and last updated on 2026-06-17.

CVE-2026-4909

CVE-2026-4909 is a low-severity vulnerability with a CVSS 3.x base score of 2.4. 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: Low (CVSS 3.x base score 2.4)
CVSS v2: 3.3
CVSS v4: 1.9
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16529
Weakness: CWE-79
Published: 2026-03-27
Last modified: 2026-06-17

Description

A weakness has been identified in code-projects Exam Form Submission 1.0. This impacts an unknown function of the file /admin/update_s7.php. This manipulation of the argument sname causes cross site scripting. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks.

Frequently asked questions

What is CVE-2026-4909?: A weakness has been identified in code-projects Exam Form Submission 1.0. This impacts an unknown function of the file /admin/update_s7.php. This manipulation of the argument sname causes cross site scripting. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks.
How severe is CVE-2026-4909?: CVE-2026-4909 has a CVSS 3.x base score of 2.4, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-4909 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-4909?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-4909 have an EU (EUVD) identifier?: Yes. CVE-2026-4909 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16529.
When was CVE-2026-4909 published?: CVE-2026-4909 was published on 2026-03-27 and last updated on 2026-06-17.

References

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

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CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

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