EUVD-2026-70855
GHSA-h6vx-22pm-pj9v
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/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
Network-exploitable XSS requiring victim page view (UI:R) with scope change as script executes in victim browser (S:C); low C/I impact typical of reflected/stored XSS; PR:N as rendering path requires no server auth.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
Lifecycle Timeline
4DescriptionCVE.org
A vulnerability was detected in light0011 cms c774dce31c6df0055568a8d5c53d964d99be199d/f72cf46f601efb2a0618c3814cc2f61380b38930. Impacted is the function htmlspecialchars_decode of the file App/Home/View/Default/Chapter/oneChapter.tpl of the component Chapter Content Output. Performing a manipulation of the argument content results in cross site scripting. Remote exploitation of the attack is possible. The exploit is now public and may be used. This product follows a rolling release approach for continuous delivery, so version details for affected or updated releases are not provided. The project was informed of the problem early through an issue report but has not responded yet.
AnalysisAI
Cross-site scripting in light0011 CMS allows remote attackers to inject arbitrary JavaScript into chapter content pages by manipulating the content argument processed through PHP's htmlspecialchars_decode() function in the chapter template. The misuse of this function-which decodes HTML entities rather than encoding them-means user-supplied chapter content is rendered as raw HTML in victims' browsers. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | A victim must actively navigate to a chapter page containing attacker-controlled content (UI:P - passive user interaction required; the attacker cannot force this). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 5.3 (Medium) with vector AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/E:P accurately captures a network-exploitable XSS requiring a victim to view a crafted chapter page. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch has been identified at time of analysis; the project maintainer has not responded to disclosure made via GitHub issue #8 (https://github.com/light0011/cms/issues/8). … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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