Vulnerability-Lookup

CVE-2026-34598 (GCVE-0-2026-34598)

Vulnerability from cvelistv5 – Published: 2026-04-02 17:37 – Updated: 2026-04-02 19:09

Title

YesWiki has Persistant Blind XSS at "/?BazaR&vue=consulter"

Summary

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.

Severity

7.1 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CWE

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

Assigner

GitHub_M

References

2 references

URL	Tags
https://github.com/YesWiki/yeswiki/security/advis…	x_refsource_CONFIRM
https://github.com/YesWiki/yeswiki/releases/tag/v4.6.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
YesWiki	yeswiki	Affected: < 4.6.0

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-34598

Vulnerability from fkie_nvd - Published: 2026-04-02 18:16 - Updated: 2026-04-10 15:58

Severity

6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/YesWiki/yeswiki/releases/tag/v4.6.0	Product, Release Notes
	security-advisories@github.com	https://github.com/YesWiki/yeswiki/security/advisories/GHSA-37fq-47qj-6j5j	Exploit, Vendor Advisory

Impacted products

	Vendor	Product	Version
	yeswiki	yeswiki	*

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:yeswiki:yeswiki:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "90DF7BF4-DBAE-44D9-8C90-15A4A3B218B0",
              "versionEndExcluding": "4.6.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "id": "CVE-2026-34598",
  "lastModified": "2026-04-10T15:58:29.673",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
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          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-04-02T18:16:31.740",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://github.com/YesWiki/yeswiki/releases/tag/v4.6.0"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/YesWiki/yeswiki/security/advisories/GHSA-37fq-47qj-6j5j"
    }
  ],
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  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
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          "lang": "en",
          "value": "CWE-79"
        },
        {
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          "value": "CWE-87"
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}

GHSA-37FQ-47QJ-6J5J

Vulnerability from github – Published: 2026-04-01 00:13 – Updated: 2026-04-10 19:34

Summary

YesWiki has Persistent Blind XSS at "/?BazaR&vue=consulter"

Details

Summary

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.

Type: Stored and Blind Cross-Site Scripting (XSS) Affected Component: form title input field Authentication Required: No (Unauthenticated attack possible) Impact: Arbitrary JavaScript execution in victim’s browser

Details

A Stored XSS vulnerability occurs when an application stores malicious user input (in this case, a script injected via the form title field) in its backend database and renders it later on a page viewed by other users without proper sanitization or encoding.

In this case, the attacker can inject JavaScript payloads in the title field of a form, which the application stores in the database. When any user, such as an admin or another visitor, views the page that displays this title, the malicious script executes in their browser context.

PoC

Visit https://yeswiki.net/?BazaR&vue=formulaire or localhost/?BazaR&vue=formulaire or https://ferme.yeswiki.net/[username]/?BazaR&vue=formulaire
Click on the + icon to add a record via the Diary form.
Inject the payload like: <script>alert(document.cookie)</script> or <script>alert(1)</script> into Name of the event and Description
Then save the record by clicking To validate
The payload will be executed when anyone visits /?BazaR&vue=consulter also in the diary record /?wiki=BazaR&vue=consulter&action=recherche&q=&id=2&facette=

The payload is persistant.

Severity

7.1 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "yeswiki/yeswiki"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.6.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-34598"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79",
      "CWE-87"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-01T00:13:57Z",
    "nvd_published_at": "2026-04-02T18:16:31Z",
    "severity": "HIGH"
  },
  "details": "### Summary\nA 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.\n\nType: Stored and Blind Cross-Site Scripting (XSS)\nAffected Component: form title input field\nAuthentication Required: No (Unauthenticated attack possible)\nImpact: Arbitrary JavaScript execution in victim\u2019s browser\n\n\n### Details\nA Stored XSS vulnerability occurs when an application stores malicious user input (in this case, a script injected via the form title field) in its backend database and renders it later on a page viewed by other users without proper sanitization or encoding.\n\nIn this case, the attacker can inject JavaScript payloads in the title field of a form, which the application stores in the database. When any user, such as an admin or another visitor, views the page that displays this title, the malicious script executes in their browser context.\n\n### PoC\n- Visit `https://yeswiki.net/?BazaR\u0026vue=formulaire` or `localhost/?BazaR\u0026vue=formulaire` or \n `https://ferme.yeswiki.net/[username]/?BazaR\u0026vue=formulaire`\n- Click on the `+` icon to add a record via the `Diary` form.\n- Inject the payload like: `\u003cscript\u003ealert(document.cookie)\u003c/script\u003e` or `\u003cscript\u003ealert(1)\u003c/script\u003e` into `Name of the event` and `Description`\n- Then save the record by clicking `To validate`\n- The payload will be executed when anyone visits `/?BazaR\u0026vue=consulter` also in the diary record \n`/?wiki=BazaR\u0026vue=consulter\u0026action=recherche\u0026q=\u0026id=2\u0026facette=`\n\nThe payload is persistant.",
  "id": "GHSA-37fq-47qj-6j5j",
  "modified": "2026-04-10T19:34:59Z",
  "published": "2026-04-01T00:13:57Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/YesWiki/yeswiki/security/advisories/GHSA-37fq-47qj-6j5j"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34598"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/YesWiki/yeswiki"
    },
    {
      "type": "WEB",
      "url": "https://github.com/YesWiki/yeswiki/releases/tag/v4.6.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "YesWiki has Persistent Blind XSS at \"/?BazaR\u0026vue=consulter\""
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-34598 (GCVE-0-2026-34598)

FKIE_CVE-2026-34598

GHSA-37FQ-47QJ-6J5J

Summary

Details

PoC

Tags

Sightings

Nomenclature