{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-102374", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-09-28T23:57:27.220Z", "datePublished": "2026-09-29T00:33:24.255Z", "dateUpdated": "2026-09-29T00:33:24.255Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-09-29T00:33:24.255Z"}, "datePublic": "2026-08-24T00:00:00.000Z", "title": "GestSup before 3.2.62 Stored XSS via Double-Decoded Email Subject in OAuth IMAP Connector", "descriptions": [{"lang": "en", "value": "GestSup versions before 3.2.62 contain a stored cross-site scripting vulnerability in the IMAP OAuth connector that double-decodes MIME-encoded email subjects after HTML escaping. Unauthenticated attackers can send crafted emails to monitored mailboxes with nested MIME encoded-words to inject JavaScript that executes in technician sessions when viewing tickets."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "cweId": "CWE-79", "type": "CWE"}]}], "affected": [{"vendor": "GestSup", "product": "GestSup", "defaultStatus": "unaffected", "versions": [{"version": "0", "lessThan": "3.2.62", "status": "affected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:gestsup:gestsup:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.2.62"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "subAvailabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM"}}], "references": [{"url": "https://gestsup.fr/index.php?page=changelog", "tags": ["release-notes"]}, {"url": "https://gestsup.fr/index.php?page=download", "tags": ["product"]}, {"url": "https://gestsup.fr/index.php?page=download&channel=stable&version=3.2.62&type=patch", "tags": ["patch"]}, {"name": "VulnCheck Advisory: GestSup before 3.2.62 Stored XSS via Double-Decoded Email Subject in OAuth IMAP Connector", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/gestsup-before-3.2.62-stored-xss-via-double-decoded-email-subject-in-oauth-imap-connector"}], "credits": [{"lang": "en", "value": "SpiizN", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,3.2.62)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "GestSup", "source": "cna", "vendor": "GestSup"}, "product": "gestsup", "vendor": "gestsup"}], "created": "2026-09-29T02:30:10.267738+00:00", "updated": "2026-09-29T03:15:04.450265+00:00", "vendors": ["gestsup", "gestsup$PRODUCT$gestsup"]}