How severe is CVE-2025-57883?

CVE-2025-57883 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-2025-57883 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-57883?

CVE-2025-57883 primarily affects Groupsession. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-57883?

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

Does CVE-2025-57883 have an EU (EUVD) identifier?

Yes. CVE-2025-57883 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203024.

When was CVE-2025-57883 published?

CVE-2025-57883 was published on 2025-12-12 and last updated on 2026-06-17.

CVE-2025-57883

CVE-2025-57883 is a medium-severity vulnerability in Groupsession 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: 5.1
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-203024
Weakness: CWE-79
Affected product: Groupsession
Published: 2025-12-12
Last modified: 2026-06-17

Description

Reflected cross-site scripting vulnerability exists in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. If a user accesses a crafted page or URL, an arbitrary script may be executed on the web browser of the user.

Frequently asked questions

What is CVE-2025-57883?: Reflected cross-site scripting vulnerability exists in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. If a user accesses a crafted page or URL, an arbitrary script may be executed on the web browser of the user.
How severe is CVE-2025-57883?: CVE-2025-57883 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-2025-57883 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-57883?: CVE-2025-57883 primarily affects Groupsession. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-57883?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-57883 have an EU (EUVD) identifier?: Yes. CVE-2025-57883 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203024.
When was CVE-2025-57883 published?: CVE-2025-57883 was published on 2025-12-12 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:groupsession:groupsession:*:*:*:*:free:*:*:*
cpe:2.3:a:groupsession:groupsession:*:*:*:*:zion:*:*:*
cpe:2.3:a:groupsession:groupsession:*:*:*:*:bycloud:*:*:*

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