How severe is CVE-2026-9527?

CVE-2026-9527 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-9527 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-9527?

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

Does CVE-2026-9527 have an EU (EUVD) identifier?

Yes. CVE-2026-9527 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31787.

When was CVE-2026-9527 published?

CVE-2026-9527 was published on 2026-05-26 and last updated on 2026-06-17.

CVE-2026-9527

CVE-2026-9527 is a medium-severity vulnerability with a CVSS 3.x base score of 4.3. 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 4.3)
CVSS v2: 5.0
CVSS v4: 2.1
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-31787
Weakness: CWE-79
Published: 2026-05-26
Last modified: 2026-06-17

Description

A vulnerability was determined in itsourcecode Electronic Judging System 1.0. This issue affects some unknown processing of the file /admin/judges.php. This manipulation of the argument fname causes cross site scripting. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.

Frequently asked questions

What is CVE-2026-9527?: A vulnerability was determined in itsourcecode Electronic Judging System 1.0. This issue affects some unknown processing of the file /admin/judges.php. This manipulation of the argument fname causes cross site scripting. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.
How severe is CVE-2026-9527?: CVE-2026-9527 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-9527 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-9527?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-9527 have an EU (EUVD) identifier?: Yes. CVE-2026-9527 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31787.
When was CVE-2026-9527 published?: CVE-2026-9527 was published on 2026-05-26 and last updated on 2026-06-17.

References

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