CVE•Published 2026-04-02•Modified 2026-04-10•0 articles on news•6 live references•NVD data

CVE-2026-34598Yeswiki · Yeswiki

Vulnerability data via NVD (ingested)

CVSS v3.1

6.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS percentile

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Weaknesses (CWE)

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CWE-87Improper Neutralization of Alternate XSS Syntax

Description

YesWiki is a wiki system written in PHP. Prior to version 4.6.0, a stored and blind XSS vulnerability exists in the form title field. A malicious attacker can inject JavaScript without any authentication via a form title that is saved in the backend database. When any user visits that injected page, the JavaScript payload gets executed. This issue has been patched in version 4.6.0.

Timeline

Published 2026-04-02

Modified 2026-04-10

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-34598

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Yeswiki Yeswiki"

All exposed Yeswiki Yeswiki instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Yeswiki"

HTTP body or banner mentions "Yeswiki" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-34598