How severe is CVE-2026-4577?

CVE-2026-4577 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-2026-4577 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-4577?

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

Does CVE-2026-4577 have an EU (EUVD) identifier?

Yes. CVE-2026-4577 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14384.

When was CVE-2026-4577 published?

CVE-2026-4577 was published on 2026-03-23 and last updated on 2026-06-17.

CVE-2026-4577

CVE-2026-4577 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% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-14384
Weakness: CWE-79
Published: 2026-03-23
Last modified: 2026-06-17

Description

A vulnerability was found in code-projects Exam Form Submission 1.0. The affected element is an unknown function of the file /admin/update_s4.php. Performing a manipulation of the argument sname results in cross site scripting. The attack may be initiated remotely. The exploit has been made public and could be used.

Frequently asked questions

What is CVE-2026-4577?: A vulnerability was found in code-projects Exam Form Submission 1.0. The affected element is an unknown function of the file /admin/update_s4.php. Performing a manipulation of the argument sname results in cross site scripting. The attack may be initiated remotely. The exploit has been made public and could be used.
How severe is CVE-2026-4577?: CVE-2026-4577 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-2026-4577 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-4577?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-4577 have an EU (EUVD) identifier?: Yes. CVE-2026-4577 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14384.
When was CVE-2026-4577 published?: CVE-2026-4577 was published on 2026-03-23 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…
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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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