CVE-2021-24478 - Vulnerability Details - OpenCVE

Description

The Bookshelf WordPress plugin through 2.0.4 does not sanitise or escape its "Paypal email address" setting before outputting it in the page, leading to an authenticated Stored Cross-Site Scripting issue

Published: 2021-08-02

Score: 5.4 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Unknown

Bookshelf

affected

Version	Status	Constraints
`2.0.4`	affected	≤ 2.0.4

Configuration 1 [-]

cpe:2.3:a:bookshelf_project:bookshelf:*:*:*:*:*:wordpress:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2021-11390	The Bookshelf WordPress plugin through 2.0.4 does not sanitise or escape its "Paypal email address" setting before outputting it in the page, leading to an authenticated Stored Cross-Site Scripting issue

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication Single

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.0062.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://wpscan.com/vulnerability/c73818e5-0734-46c9-9703-d211b4f58664

History

No history.

Subscriptions

Bookshelf Project Bookshelf

MITRE

Status: PUBLISHED

Assigner: WPScan

Published: 2021-08-02T10:32:18.000Z

Updated: 2024-08-03T19:35:19.701Z

Reserved: 2021-01-14T00:00:00.000Z

Link: CVE-2021-24478

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-08-02T11:15:10.457

Modified: 2026-06-17T03:40:06.103

Link: CVE-2021-24478

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

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

{"containers": {"cna": {"affected": [{"product": "Bookshelf", "vendor": "Unknown", "versions": [{"lessThanOrEqual": "2.0.4", "status": "affected", "version": "2.0.4", "versionType": "custom"}]}], "credits": [{"lang": "en", "value": "ABISHEIK M"}], "descriptions": [{"lang": "en", "value": "The Bookshelf WordPress plugin through 2.0.4 does not sanitise or escape its \"Paypal email address\" setting before outputting it in the page, leading to an authenticated Stored Cross-Site Scripting issue"}], "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "description": "CWE-79 Cross-site Scripting (XSS)", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-08-02T10:32:18.000Z", "orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81", "shortName": "WPScan"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://wpscan.com/vulnerability/c73818e5-0734-46c9-9703-d211b4f58664"}], "source": {"discovery": "UNKNOWN"}, "title": "Bookshelf <= 2.0.4 - Authenticated Stored Cross-Site Scripting (XSS)", "x_generator": "WPScan CVE Generator", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "[email protected]", "ID": "CVE-2021-24478", "STATE": "PUBLIC", "TITLE": "Bookshelf <= 2.0.4 - Authenticated Stored Cross-Site Scripting (XSS)"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Bookshelf", "version": {"version_data": [{"version_affected": "<=", "version_name": "2.0.4", "version_value": "2.0.4"}]}}]}, "vendor_name": "Unknown"}]}}, "credit": [{"lang": "eng", "value": "ABISHEIK M"}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "The Bookshelf WordPress plugin through 2.0.4 does not sanitise or escape its \"Paypal email address\" setting before outputting it in the page, leading to an authenticated Stored Cross-Site Scripting issue"}]}, "generator": "WPScan CVE Generator", "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-79 Cross-site Scripting (XSS)"}]}]}, "references": {"reference_data": [{"name": "https://wpscan.com/vulnerability/c73818e5-0734-46c9-9703-d211b4f58664", "refsource": "MISC", "url": "https://wpscan.com/vulnerability/c73818e5-0734-46c9-9703-d211b4f58664"}]}, "source": {"discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T19:35:19.701Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://wpscan.com/vulnerability/c73818e5-0734-46c9-9703-d211b4f58664"}]}]}, "cveMetadata": {"assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81", "assignerShortName": "WPScan", "cveId": "CVE-2021-24478", "datePublished": "2021-08-02T10:32:18.000Z", "dateReserved": "2021-01-14T00:00:00.000Z", "dateUpdated": "2024-08-03T19:35:19.701Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "Bookshelf", "vendor": "Unknown", "versions": [{"lessThanOrEqual": "2.0.4", "status": "affected", "version": "2.0.4", "versionType": "custom"}]}], "source": "[email protected]"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:bookshelf_project:bookshelf:*:*:*:*:*:wordpress:*:*", "matchCriteriaId": "0D4108C1-4563-4F6A-8BED-F84268683A88", "versionEndIncluding": "2.0.4", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Bookshelf WordPress plugin through 2.0.4 does not sanitise or escape its \"Paypal email address\" setting before outputting it in the page, leading to an authenticated Stored Cross-Site Scripting issue"}, {"lang": "es", "value": "El plugin Bookshelf WordPress versiones hasta 2.0.4, no sanea ni escapa de su opci\u00f3n \"Paypal email address\" antes de mostrarla en la p\u00e1gina, conllevando a un problema de tipo Cross-Site Scripting Almacenado autenticado"}], "id": "CVE-2021-24478", "lastModified": "2026-06-17T03:40:06.103", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 3.5, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 6.8, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "[email protected]", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 2.7, "source": "[email protected]", "type": "Primary"}]}, "published": "2021-08-02T11:15:10.457", "references": [{"source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"], "url": "https://wpscan.com/vulnerability/c73818e5-0734-46c9-9703-d211b4f58664"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://wpscan.com/vulnerability/c73818e5-0734-46c9-9703-d211b4f58664"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "[email protected]", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-79"}], "source": "[email protected]", "type": "Primary"}]}