{"id":"CVE-2026-49359","aliases":["GHSA-x8g9-h984-pc36"],"url":"https://o3.security/vulnerability/CVE-2026-49359","summary":"PhpWeasyPrint vulnerable to SSRF and local file disclosure via the attachment option","details":"PhpWeasyPrint is a PHP library allowing PDF generation from a URL or an HTML page. Prior to version 2.6.0, `pontedilana/php-weasyprint` fetches the content of option values server-side via `file_get_contents()` when the value looks like a URL, without restricting the URL scheme. The `attachment` option of `Pdf` is the reachable sink: any value that passes `isOptionUrl()` (`filter_var(..., FILTER_VALIDATE_URL)`) is downloaded by the PHP process and embedded into the generated PDF. Because `FILTER_VALIDATE_URL` accepts `http`, `https`, `ftp`, `file` and PHP stream wrappers such as `php://`, an attacker who can influence the `attachment` value reaches both a **Server-Side Request Forgery** primitive (e.g. internal HTTP endpoints, cloud metadata) and a local file disclosure primitive (`file://`, `php://filter/...`), with the fetched bytes exfiltrated as a PDF attachment. This is the same class of issue KnpLabs/snappy patched for its `xsl-style-sheet` option in GHSA-c5fp-p67m-gq56. The library is documented as a one-to-one substitute for KnpLabs/snappy and shares the same code shape. PhpWeasyPrint version 2.6.0 contains a patch for the issue.","published":"2026-06-19T17:06:12.737Z","modified":"2026-08-07T11:48:55.881934074Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"pontedilana/php-weasyprint","fixedVersion":"2.6.0"}],"fix":{"url":"https://github.com/pontedilana/php-weasyprint/commit/9582dcf119a405276cf55e9e10bc577a887792cb","label":"pontedilana/php-weasyprint@9582dcf"},"references":[{"type":"WEB","url":"https://github.com/pontedilana/php-weasyprint/releases/tag/2.6.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49359.json"},{"type":"ADVISORY","url":"https://github.com/KnpLabs/snappy/security/advisories/GHSA-c5fp-p67m-gq56"},{"type":"ADVISORY","url":"https://github.com/pontedilana/php-weasyprint/security/advisories/GHSA-x8g9-h984-pc36"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49359"},{"type":"FIX","url":"https://github.com/pontedilana/php-weasyprint/commit/9582dcf119a405276cf55e9e10bc577a887792cb"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:48:55.881934074Z"}}