CVE-2026-25736

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-25736", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-02-05T16:48:00.427Z", "datePublished": "2026-02-25T19:50:52.820Z", "dateUpdated": "2026-02-26T15:59:19.879Z"}, "containers": {"cna": {"title": "Rucio WebUI has a Stored Cross-site Scripting (XSS) Vulnerability in its Custom RSE Attribute", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-1004", "lang": "en", "description": "CWE-1004: Sensitive Cookie Without 'HttpOnly' Flag", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/rucio/rucio/security/advisories/GHSA-fq4f-4738-rqxm", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/rucio/rucio/security/advisories/GHSA-fq4f-4738-rqxm"}, {"name": "https://cheatsheetseries.owasp.org/cheatsheets/Cross_Site_Scripting_Prevention_Cheat_Sheet.html", "tags": ["x_refsource_MISC"], "url": "https://cheatsheetseries.owasp.org/cheatsheets/Cross_Site_Scripting_Prevention_Cheat_Sheet.html"}, {"name": "https://github.com/rucio/rucio/releases/tag/35.8.3", "tags": ["x_refsource_MISC"], "url": "https://github.com/rucio/rucio/releases/tag/35.8.3"}, {"name": "https://github.com/rucio/rucio/releases/tag/38.5.4", "tags": ["x_refsource_MISC"], "url": "https://github.com/rucio/rucio/releases/tag/38.5.4"}, {"name": "https://github.com/rucio/rucio/releases/tag/39.3.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/rucio/rucio/releases/tag/39.3.1"}], "affected": [{"vendor": "rucio", "product": "rucio", "versions": [{"version": "< 35.8.3", "status": "affected"}, {"version": ">= 36.0.0rc1, < 38.5.4", "status": "affected"}, {"version": ">= 39.0.0rc1, < 39.3.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-02-25T19:50:52.820Z"}, "descriptions": [{"lang": "en", "value": "Rucio is a software framework that provides functionality to organize, manage, and access large volumes of scientific data using customizable policies. Versions prior to 35.8.3, 38.5.4, and 39.3.1 have a stored Cross-Site Scripting (XSS) vulnerability in the Custom RSE Attribute of the WebUI where attacker-controlled input is persisted by the backend and later rendered in the WebUI without proper output encoding. This allows arbitrary JavaScript execution in the context of the WebUI for users who view affected pages, potentially enabling session token theft or unauthorized actions. Versions 35.8.3, 38.5.4, and 39.3.1 fix the issue."}], "source": {"advisory": "GHSA-fq4f-4738-rqxm", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/rucio/rucio/security/advisories/GHSA-fq4f-4738-rqxm", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-02-26T15:59:14.603628Z", "id": "CVE-2026-25736", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-02-26T15:59:19.879Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-25736", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-02-26T15:59:14.603628Z"}}}], "references": [{"url": "https://github.com/rucio/rucio/security/advisories/GHSA-fq4f-4738-rqxm", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-02-26T15:59:04.070Z"}}], "cna": {"title": "Rucio WebUI has a Stored Cross-site Scripting (XSS) Vulnerability in its Custom RSE Attribute", "source": {"advisory": "GHSA-fq4f-4738-rqxm", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.1, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "rucio", "product": "rucio", "versions": [{"status": "affected", "version": "< 35.8.3"}, {"status": "affected", "version": ">= 36.0.0rc1, < 38.5.4"}, {"status": "affected", "version": ">= 39.0.0rc1, < 39.3.1"}]}], "references": [{"url": "https://github.com/rucio/rucio/security/advisories/GHSA-fq4f-4738-rqxm", "name": "https://github.com/rucio/rucio/security/advisories/GHSA-fq4f-4738-rqxm", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://cheatsheetseries.owasp.org/cheatsheets/Cross_Site_Scripting_Prevention_Cheat_Sheet.html", "name": "https://cheatsheetseries.owasp.org/cheatsheets/Cross_Site_Scripting_Prevention_Cheat_Sheet.html", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/rucio/rucio/releases/tag/35.8.3", "name": "https://github.com/rucio/rucio/releases/tag/35.8.3", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/rucio/rucio/releases/tag/38.5.4", "name": "https://github.com/rucio/rucio/releases/tag/38.5.4", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/rucio/rucio/releases/tag/39.3.1", "name": "https://github.com/rucio/rucio/releases/tag/39.3.1", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "Rucio is a software framework that provides functionality to organize, manage, and access large volumes of scientific data using customizable policies. Versions prior to 35.8.3, 38.5.4, and 39.3.1 have a stored Cross-Site Scripting (XSS) vulnerability in the Custom RSE Attribute of the WebUI where attacker-controlled input is persisted by the backend and later rendered in the WebUI without proper output encoding. This allows arbitrary JavaScript execution in the context of the WebUI for users who view affected pages, potentially enabling session token theft or unauthorized actions. Versions 35.8.3, 38.5.4, and 39.3.1 fix the issue."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-79", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-1004", "description": "CWE-1004: Sensitive Cookie Without 'HttpOnly' Flag"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-02-25T19:50:52.820Z"}}}, "cveMetadata": {"cveId": "CVE-2026-25736", "state": "PUBLISHED", "dateUpdated": "2026-02-26T15:59:19.879Z", "dateReserved": "2026-02-05T16:48:00.427Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-02-25T19:50:52.820Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "rucio", "vendor": "rucio", "versions": [{"status": "affected", "version": "< 35.8.3"}, {"status": "affected", "version": ">= 36.0.0rc1, < 38.5.4"}, {"status": "affected", "version": ">= 39.0.0rc1, < 39.3.1"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:cern:rucio:*:*:*:*:*:*:*:*", "matchCriteriaId": "3BCD5122-895C-41F6-8DDE-5DD999D88FDC", "versionEndExcluding": "35.8.3", "vulnerable": true}, {"criteria": "cpe:2.3:a:cern:rucio:*:*:*:*:*:*:*:*", "matchCriteriaId": "364DE7B4-B341-4A96-917B-B2D37777CB7E", "versionEndExcluding": "38.5.4", "versionStartIncluding": "36.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:cern:rucio:*:*:*:*:*:*:*:*", "matchCriteriaId": "EB66BA62-B3B2-45C5-99AC-59CC9B39F350", "versionEndExcluding": "39.3.1", "versionStartIncluding": "39.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Rucio is a software framework that provides functionality to organize, manage, and access large volumes of scientific data using customizable policies. Versions prior to 35.8.3, 38.5.4, and 39.3.1 have a stored Cross-Site Scripting (XSS) vulnerability in the Custom RSE Attribute of the WebUI where attacker-controlled input is persisted by the backend and later rendered in the WebUI without proper output encoding. This allows arbitrary JavaScript execution in the context of the WebUI for users who view affected pages, potentially enabling session token theft or unauthorized actions. Versions 35.8.3, 38.5.4, and 39.3.1 fix the issue."}, {"lang": "es", "value": "Rucio es un framework de software que proporciona funcionalidad para organizar, gestionar y acceder a grandes vol\u00famenes de datos cient\u00edficos utilizando pol\u00edticas personalizables. Las versiones anteriores a la 35.8.3, 38.5.4 y 39.3.1 tienen una vulnerabilidad de cross-site scripting (XSS) almacenado en el Custom RSE Attribute de la WebUI, donde la entrada controlada por el atacante es persistida por el backend y posteriormente renderizada en la WebUI sin una codificaci\u00f3n de salida adecuada. Esto permite la ejecuci\u00f3n arbitraria de JavaScript en el contexto de la WebUI para los usuarios que visualizan las p\u00e1ginas afectadas, lo que podr\u00eda permitir el robo de tokens de sesi\u00f3n o acciones no autorizadas. Las versiones 35.8.3, 38.5.4 y 39.3.1 solucionan el problema."}], "id": "CVE-2026-25736", "lastModified": "2026-06-17T10:25:08.263", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 0.9, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.7, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-25736", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-02-26T15:59:14.603628Z", "version": "2.0.3"}}]}, "published": "2026-02-25T20:23:48.243", "references": [{"source": "security-advisories@github.com", "tags": ["Not Applicable"], "url": "https://cheatsheetseries.owasp.org/cheatsheets/Cross_Site_Scripting_Prevention_Cheat_Sheet.html"}, {"source": "security-advisories@github.com", "tags": ["Product", "Release Notes"], "url": "https://github.com/rucio/rucio/releases/tag/35.8.3"}, {"source": "security-advisories@github.com", "tags": ["Product", "Release Notes"], "url": "https://github.com/rucio/rucio/releases/tag/38.5.4"}, {"source": "security-advisories@github.com", "tags": ["Product", "Release Notes"], "url": "https://github.com/rucio/rucio/releases/tag/39.3.1"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/rucio/rucio/security/advisories/GHSA-fq4f-4738-rqxm"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/rucio/rucio/security/advisories/GHSA-fq4f-4738-rqxm"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}, {"lang": "en", "value": "CWE-1004"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-79"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,35.8.3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[36.0.0rc1,38.5.4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[39.0.0rc1,39.3.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "rucio", "source": "cna", "vendor": "rucio"}, "product": "rucio", "vendor": "rucio"}], "analysis": {"en": {"generated_at": "2026-04-17T14:58:01.664493+00:00", "value": {"mitigation_remediation": ["Upgrade to a fixed Rucio release (35.8.3, 38.5.4, or 39.3.1 depending on your branch).", "Apply proper HTML escaping or input sanitization to the Custom RSE Attribute before rendering it in the WebUI to mitigate stored XSS. (This addresses CWE\u201179)", "Limit the ability to modify Custom RSE Attributes to privileged users and audit changes for suspicious activity."], "summary": {"action": "Patch Immediately", "impact": "Stored Cross\u2011site Scripting allowing arbitrary JavaScript execution"}, "threat_synthesis": {"affected_systems": "Affected systems are installations of the Rucio framework that use versions earlier than 35.8.3, 38.5.4, or 39.3.1. The flaw resides in the handling of custom RSE attributes; any deployment relying on those legacy releases is vulnerable until a patched version is applied.", "description_and_impact": "The vulnerability is a stored cross\u2011site scripting flaw in Rucio\u2019s WebUI Custom RSE Attribute. Attackers can inject arbitrary JavaScript that is saved by the backend and later rendered without proper output encoding, enabling execution in the browser context of any user who views the affected page. This could lead to session token theft or other unauthorized actions.", "risk_and_exploitability": "The CVSS score is 6.1, indicating moderate severity, while the EPSS score of less than 1% suggests the likelihood of exploitation is low, and the issue is not currently listed in CISA\u2019s KEV catalog. The attack vector is via the WebUI, requiring the attacker to supply malicious input to the RSE attribute, which is then persisted and rendered for other users. Once the script runs, it operates with the privileges of the viewing user, potentially allowing credential compromise or other client\u2011side attacks."}}}}, "created": "2026-02-26T13:14:51.813868+00:00", "updated": "2026-04-17T15:00:11.035620+00:00", "vendors": ["rucio", "rucio$PRODUCT$rucio"]}