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itranswarp CVE-2026-90835

| EUVDEUVD-2026-78221 LOW
Cross-site Scripting (XSS) (CWE-79)
2026-09-14 cna@vuldb.com GHSA-p8mq-m5f2-pfpc
XSS Java
2.0
CVSS 4.0 · Vendor: vuldb

Severity by source

Vendor (vuldb) PRIMARY
2.0 LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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
vuln.today AI
5.4 MEDIUM

Network delivery, authenticated submitter (PR:L), victim page visit required (UI:R), scope changes to victim browser (S:C), typical stored-XSS low C/I impact.

3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N

Primary rating from Vendor (vuldb).

CVSS VectorVendor: vuldb

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
P
Scope
X

Lifecycle Timeline

1
Analysis Generated
Sep 15, 2026 - 08:03 vuln.today

DescriptionCVE.org

A flaw has been found in michaelliao itranswarp up to 2.19. The impacted element is the function Markdown.toHtml of the file Markdown.java of the component Page Content Rendering. This manipulation causes cross site scripting. The attack may be initiated remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet. This vulnerability only affects products that are no longer supported by the maintainer.

AnalysisAI

Stored cross-site scripting in itranswarp's Markdown rendering pipeline allows authenticated users to inject arbitrary JavaScript into page content that executes in other visitors' browsers. The flaw exists in the Markdown.toHtml() method of Markdown.java, which fails to sanitize malicious HTML or script constructs embedded in Markdown input before writing rendered output to the page. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation An attacker must hold a low-privilege authenticated account on the itranswarp instance with permission to create or edit page content (PR:L). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Real-world risk is constrained by several factors even though a public exploit exists (E:P). … 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 issued, and the project is declared end-of-life with no maintainer engagement on the vulnerability report per the disclosure timeline. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-90835 vulnerability details – vuln.today
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