Is CVE-2025-57883 in the CISA KEV catalog?

No. CVE-2025-57883 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-57883?

CVE-2025-57883 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2025-57883?

CVE-2025-57883 has an EPSS score of 0.17% (6th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-57883?

Upgrade groupsession to 5.3.0 or later.

CVE & CISA-KEV Catalog

CVE-2025-57883

MEDIUM

6.1

CVSS v3

NVD

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.

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

groupsessionNVD

Affected:< 5.3.0Fixed in:5.3.0CVE-2025-57883derived from NVD

Affected:< 5.3.2Fixed in:5.3.2CVE-2025-57883derived from NVD

Affected:< 5.3.3Fixed in:5.3.3CVE-2025-57883derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploit Intelligence

0.17%probability of exploitation in 30 days

6thpercentile

Low risk: more likely to be exploited than 6% of all known CVEs.

References

Vendor Advisory1

groupsession.jp

Third-Party Advisory1

jvn.jp

Related Vulnerabilities

Other CWE-79 (Cross-Site Scripting (XSS)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-11022	Medium	6.9	99%	-	Fix
CVE-2019-3929	Critical	9.8	99%	KEV	Fix
CVE-2020-9496	Medium	6.1	99%	-	-
CVE-2023-28341	Medium	6.1	99%	-	Fix
CVE-2018-12998	Medium	6.1	98%	-	-
CVE-2025-4123	High	7.6	98%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-01-23.