CVE-2026-33517

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{"affected": [{"affectedData": [{"product": "mantisbt", "vendor": "mantisbt", "versions": [{"status": "affected", "version": "= 2.28.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mantisbt:mantisbt:2.28.0:*:*:*:*:*:*:*", "matchCriteriaId": "7CD11245-68F0-43F7-A710-5347D626FFD8", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Mantis Bug Tracker (MantisBT) is an open source issue tracker. In version 2.28.0, when deleting a Tag (tag_delete.php), improper escaping of its name when displaying the confirmation message allows an attacker to inject HTML and, if CSP settings permit, achieve execution of arbitrary JavaScript. Version 2.28.1 fixes the issue. Workarounds include reverting commit d6890320752ecf37bd74d11fe14fe7dc12335be9 and/or manually editing language files to remove the sprintf placeholder `%1$s` from `$s_tag_delete_message` string."}, {"lang": "es", "value": "Mantis Bug Tracker (MantisBT) es un sistema de seguimiento de incidencias de c\u00f3digo abierto. En la versi\u00f3n 2.28.0, al eliminar una Etiqueta (tag_delete.php), un escape incorrecto de su nombre al mostrar el mensaje de confirmaci\u00f3n permite a un atacante inyectar HTML y, si la configuraci\u00f3n de CSP lo permite, lograr la ejecuci\u00f3n de JavaScript arbitrario. La versi\u00f3n 2.28.1 corrige el problema. Las soluciones provisionales incluyen revertir el commit d6890320752ecf37bd74d11fe14fe7dc12335be9 y/o editar manualmente los archivos de idioma para eliminar el marcador de posici\u00f3n sprintf %1$s de la cadena $s_tag_delete_message."}], "id": "CVE-2026-33517", "lastModified": "2026-06-17T10:37:38.470", "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", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.6, "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": "LOW", "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:L/UI:P/VC:H/VI:H/VA:H/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": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33517", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-03-24T14:12:05.535567Z", "version": "2.0.3"}}]}, "published": "2026-03-23T20:16:27.533", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/mantisbt/mantisbt/commit/80990f43153167c73f11eb4b2bc7108d0c3d6b46"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/mantisbt/mantisbt/commit/d6890320752ecf37bd74d11fe14fe7dc12335be9"}, {"source": "security-advisories@github.com", "tags": ["Mitigation", "Patch", "Vendor Advisory"], "url": "https://github.com/mantisbt/mantisbt/security/advisories/GHSA-fh48-f69w-7vmp"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.28.0"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "mantisbt", "source": "cna", "vendor": "mantisbt"}, "product": "mantisbt", "vendor": "mantisbt"}], "analysis": {"en": {"generated_at": "2026-03-25T16:06:54.671783+00:00", "value": {"mitigation_remediation": ["Upgrade MantisBT to version 2.28.1 or later", "If an upgrade is not immediately possible, revert commit d6890320752ecf37bd74d11fe14fe7dc12335be9 to restore the previous safe code", "Alternatively, edit the language file to remove the sprintf placeholder %1$s from the $s_tag_delete_message string to prevent unsanitized output"], "summary": {"action": "Immediate Patch", "impact": "Stored XSS capable of executing arbitrary JavaScript"}, "threat_synthesis": {"affected_systems": "All installations of Mantis Bug Tracker version 2.28.0 are vulnerable; the issue is fixed in 2.28.1. The vulnerability impacts any system running that exact version, regardless of other configuration, and can be observed across the common platform enumeration cpe:2.3:a:mantisbt:mantisbt:2.28.0.", "description_and_impact": "In MantisBT 2.28.0, the tag deletion interface displays the tag name in a confirmation message without proper escaping, allowing an attacker to embed malicious HTML or JavaScript into the page. If the site\u2019s Content\u2011Security\u2011Policy permits script execution, the injected code runs in the browser context of any user who views the confirmation, enabling theft of session data, credential compromise, or further web\u2011based attacks.", "risk_and_exploitability": "The CVSS score of 8.6 indicates high severity, while the EPSS score of less than 1% suggests a low current exploitation probability. This entry is not listed in the KEV catalog. Attacks require an authenticated user with permission to delete tags; the exploitation occurs during normal use of the web interface, making the vulnerability accessible to anyone who can modify or create tags with malicious content."}}}}, "created": "2026-03-24T10:33:03.027845+00:00", "updated": "2026-03-25T20:36:53.693462+00:00", "vendors": ["mantisbt", "mantisbt$PRODUCT$mantisbt"]}