CVE-2025-59948 (GCVE-0-2025-59948)
Vulnerability from cvelistv5 – Published: 2025-09-29 22:56 – Updated: 2025-09-30 13:47
VLAI
EPSS
VEX
Title
FreshRSS is vulnerable to XSS due to lack of CSP on HTML query page
Summary
FreshRSS is a free, self-hostable RSS aggregator. Versions 1.26.3 and below do not sanitize certain event handler attributes in feed content, so by finding a page that renders feed entries without CSP, it is possible to execute an XSS payload. The Allow API access authentication setting needs to be enabled by the instance administrator beforehand for the attack to work as it relies on api/query.php. An account takeover is possible by sending a change password request via the XSS payload / setting UserJS for persistence / stealing the autofill password / displaying a phishing page with a spoofed URL using history.replaceState()
If the victim is an administrator, the attacker can also perform administrative actions. This issue is fixed in version 1.27.0.
Severity
6.7 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-30 13:47 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/FreshRSS/FreshRSS/security/adv… | x_refsource_CONFIRM |
| https://github.com/FreshRSS/FreshRSS/commit/7df6c… | x_refsource_MISC |
| https://github.com/FreshRSS/FreshRSS/releases/tag… | x_refsource_MISC |
Impacted products
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"url": "https://github.com/FreshRSS/FreshRSS/security/advisories/GHSA-rwhf-vjjx-gmm9"
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}
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"userInteraction": "REQUIRED",
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"version": "3.1"
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},
{
"name": "https://github.com/FreshRSS/FreshRSS/commit/7df6c201f2e6a6521d20718dfd8d9794c7437d1f",
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"url": "https://github.com/FreshRSS/FreshRSS/commit/7df6c201f2e6a6521d20718dfd8d9794c7437d1f"
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{
"name": "https://github.com/FreshRSS/FreshRSS/releases/tag/1.27.0",
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"datePublished": "2025-09-29T22:56:46.073Z",
"dateReserved": "2025-09-23T14:33:49.506Z",
"dateUpdated": "2025-09-30T13:47:05.742Z",
"state": "PUBLISHED"
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"dataType": "CVE_RECORD",
"dataVersion": "5.1",
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"configurations": [
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"cpeMatch": [
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"criteria": "cpe:2.3:a:freshrss:freshrss:*:*:*:*:*:*:*:*",
"matchCriteriaId": "5043EB51-EC2A-4735-A3E0-9E07DA94ECF7",
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"value": "FreshRSS is a free, self-hostable RSS aggregator. Versions 1.26.3 and below do not sanitize certain event handler attributes in feed content, so by finding a page that renders feed entries without CSP, it is possible to execute an XSS payload. The Allow API access authentication setting needs to be enabled by the instance administrator beforehand for the attack to work as it relies on api/query.php. An account takeover is possible by sending a change password request via the XSS payload / setting UserJS for persistence / stealing the autofill password / displaying a phishing page with a spoofed URL using history.replaceState()\nIf the victim is an administrator, the attacker can also perform administrative actions. This issue is fixed in version 1.27.0."
},
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"lang": "es",
"value": "FreshRSS es un agregador RSS gratuito y autoalojable. Las versiones 1.26.3 e inferiores no sanean ciertos atributos de manejador de eventos en el contenido del feed, por lo que, al encontrar una p\u00e1gina que renderiza entradas de feed sin CSP, es posible ejecutar una carga \u00fatil de XSS. La configuraci\u00f3n de autenticaci\u00f3n Permitir acceso a la API debe ser habilitada por el administrador de la instancia de antemano para que el ataque funcione, ya que se basa en api/query.php. Es posible una toma de control de cuenta enviando una solicitud de cambio de contrase\u00f1a a trav\u00e9s de la carga \u00fatil de XSS / configurando UserJS para persistencia / robando la contrase\u00f1a de autocompletar / mostrando una p\u00e1gina de phishing con una URL falsificada usando history.replaceState(). Si la v\u00edctima es un administrador, el atacante tambi\u00e9n puede realizar acciones administrativas. Este problema est\u00e1 solucionado en la versi\u00f3n 1.27.0."
}
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"id": "CVE-2025-59948",
"lastModified": "2026-10-19T16:10:00.260",
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"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:L",
"version": "3.1"
},
"exploitabilityScore": 1.2,
"impactScore": 5.5,
"source": "security-advisories@github.com",
"type": "Secondary"
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"source": "Red Hat CSAF VEX",
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"title": "FreshRSS is vulnerable to XSS due to lack of CSP on HTML query page",
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"version": "3"
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