How severe is CVE-2026-5252?

CVE-2026-5252 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-5252 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-5252?

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

Does CVE-2026-5252 have an EU (EUVD) identifier?

Yes. CVE-2026-5252 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17773.

When was CVE-2026-5252 published?

CVE-2026-5252 was published on 2026-04-01 and last updated on 2026-06-17.

CVE-2026-5252

CVE-2026-5252 is a low-severity vulnerability with a CVSS 3.x base score of 3.5. 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 3.5)
CVSS v2: 4.0
CVSS v4: 2.0
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17773
Weakness: CWE-79
Published: 2026-04-01
Last modified: 2026-06-17

Description

A security flaw has been discovered in z-9527 admin 1.0/2.0. Affected is an unknown function of the file /server/routes/message.js of the component Message Create Endpoint. Performing a manipulation results in cross site scripting. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-5252?: A security flaw has been discovered in z-9527 admin 1.0/2.0. Affected is an unknown function of the file /server/routes/message.js of the component Message Create Endpoint. Performing a manipulation results in cross site scripting. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-5252?: CVE-2026-5252 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-5252 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-5252?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-5252 have an EU (EUVD) identifier?: Yes. CVE-2026-5252 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17773.
When was CVE-2026-5252 published?: CVE-2026-5252 was published on 2026-04-01 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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