How severe is CVE-2026-20711?

CVE-2026-20711 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-20711 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-20711?

CVE-2026-20711 affects Cybozu Garoon. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-20711?

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

Does CVE-2026-20711 have an EU (EUVD) identifier?

Yes. CVE-2026-20711 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5119.

When was CVE-2026-20711 published?

CVE-2026-20711 was published on 2026-02-02 and last updated on 2026-06-17.

CVE-2026-20711

CVE-2026-20711 is a medium-severity vulnerability in Cybozu Garoon with a CVSS 3.x base score of 6.1. 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 6.1)
CVSS v4: 6.9
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-5119
Weakness: CWE-79
Affected product: Cybozu Garoon
Published: 2026-02-02
Last modified: 2026-06-17

Description

Cross-site scripting vulnerability exists in E-mail function of Cybozu Garoon 5.0.0 to 6.0.3, which may allow an attacker to reset arbitrary users’ passwords.

Frequently asked questions

What is CVE-2026-20711?: Cross-site scripting vulnerability exists in E-mail function of Cybozu Garoon 5.0.0 to 6.0.3, which may allow an attacker to reset arbitrary users’ passwords.
How severe is CVE-2026-20711?: CVE-2026-20711 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-20711 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-20711?: CVE-2026-20711 affects Cybozu Garoon. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-20711?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-20711 have an EU (EUVD) identifier?: Yes. CVE-2026-20711 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5119.
When was CVE-2026-20711 published?: CVE-2026-20711 was published on 2026-02-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cybozu:garoon:*:*:*:*:*:*:*:*

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