How severe is CVE-2026-7677?

CVE-2026-7677 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-2026-7677 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-7677?

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

Does CVE-2026-7677 have an EU (EUVD) identifier?

Yes. CVE-2026-7677 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26811.

When was CVE-2026-7677 published?

CVE-2026-7677 was published on 2026-05-03 and last updated on 2026-06-17.

CVE-2026-7677

CVE-2026-7677 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% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26811
Weakness: CWE-79
Published: 2026-05-03
Last modified: 2026-06-17

Description

A vulnerability was determined in kerwincui FastBee up to 1.2.1. The impacted element is the function Add of the file springboot/fastbee-admin/src/main/java/com/fastbee/web/controller/system/SysNoticeController.java of the component System Notice Handler. This manipulation of the argument noticeContent causes cross site scripting. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-7677?: A vulnerability was determined in kerwincui FastBee up to 1.2.1. The impacted element is the function Add of the file springboot/fastbee-admin/src/main/java/com/fastbee/web/controller/system/SysNoticeController.java of the component System Notice Handler. This manipulation of the argument noticeContent causes cross site scripting. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-7677?: CVE-2026-7677 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-2026-7677 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-7677?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-7677 have an EU (EUVD) identifier?: Yes. CVE-2026-7677 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26811.
When was CVE-2026-7677 published?: CVE-2026-7677 was published on 2026-05-03 and last updated on 2026-06-17.

References

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