Is CVE-2026-23734 in the CISA KEV catalog?

No. CVE-2026-23734 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-23734?

CVE-2026-23734 has a CVSS v4 base score of 9.3 (CRITICAL).

What is the EPSS score for CVE-2026-23734?

CVE-2026-23734 has an EPSS score of 19.54% (97th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2026-23734?

No published fix for CVE-2026-23734 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2026-23734

CRITICALEPSS 97th pctl

9.3

CVSS v4

NVD

Description

XWiki Platform is a generic wiki platform. Versions prior to 18.1.0-rc-1, 17.10.3, 17.4.9, and 16.10.17 allow access to read configuration files by using URLs such as http://localhost:8080/bin/ssx/Main/WebHome?resource=/../../WEB-INF/xwiki.cfg&minify=false, leading to Path Traversal. The vulnerability is can be exploited via resources parameter the ssx and jsx endpoints by using leading slashes. This issue has been patched in 18.1.0-rc-1, 17.10.3, 17.4.9, 16.10.17.

CWE-23

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v4 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

Impact

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Exploit Intelligence

19.54%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

Other references3

Related Vulnerabilities

Other CWE-23 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-27199	High	7.3	100%	KEV + Ransom	Fix
CVE-2020-5410	High	7.5	96%	KEV	Fix
CVE-2021-40870	Critical	9.8	93%	KEV	Fix
CVE-2025-64446	Critical	9.8	89%	KEV	Fix
CVE-2020-5405	Medium	6.5	69%	-	Fix
CVE-2025-55752	High	7.5	67%	-	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 2026-06-17.