{"answers":{"affected":"2 open source packages ship an affected version, including dompdf/dompdf. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55554 exists.","fix":"Upgrade dompdf/dompdf to 3.1.6 or later.","what":"CVE-2026-55554 is a low-severity path traversal vulnerability in dompdf, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-55554 and fix it if it is affected.\n\nWhat it is: CVE-2026-55554 is a low-severity path traversal vulnerability in dompdf, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55554 exists.\n\nAffected packages and fixed versions:\n- dompdf/dompdf (Packagist): affected all versions; fixed in 3.1.6\n- dompdf/dompdf (Packagist): affected all versions; fixed in 3.1.6\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-55554/ (Markdown: https://insights.sbomify.com/CVE-2026-55554/index.md)","id":"CVE-2026-55554","markdown":"https://insights.sbomify.com/CVE-2026-55554/index.md","name":"CVE-2026-55554","record":{"aliases":["DEBIAN-CVE-2026-55554","GHSA-wvh6-f5jh-8gw4","UBUNTU-CVE-2026-55554"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"PHP PDF library","requires_auth":"none","summary":"An attacker can bypass chroot restrictions in Dompdf to read sensitive files outside the allowed directory by exploiting a flawed path validation check.","user_interaction":"required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"dompdf","vendor":"dompdf_project"}],"cvss":{"score":2.3,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"Dompdf is an HTML to PDF converter for PHP. In versions 3.15 and prior, the validateLocalUri() method enforces chroot boundaries with a strpos() prefix check after normalizing paths with  realpath() . Because normalization strips the trailing directory separator from  $chrootPath , the check only verifies that  $chrootPath  is a string prefix of $realfile, so a chroot of  /var/www  also matches sibling directories like /var/www2 , /var/www-admin, or /var/www_backup. An attacker who controls part of the rendered HTML could exploit this to escape the chroot and read sensitive files outside the allowed directory. This issue has been fixed in version 3.16.","ecosystems":["Packagist"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Dompdf: Chroot Validation Bypass","id":"CVE-2026-55554","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"Dompdf: File existence oracle via font-face stylesheet declaration","id":"CVE-2026-55555"},"packages":[{"ecosystem":"Packagist","fixed":["3.1.6"],"introduced":["0"],"last_affected":[],"package":"dompdf/dompdf","purl":null,"source":"GHSA-wvh6-f5jh-8gw4"},{"ecosystem":"Packagist","fixed":["3.1.6"],"introduced":["0"],"last_affected":[],"package":"dompdf/dompdf","purl":"pkg:composer/dompdf/dompdf","source":"GHSA-wvh6-f5jh-8gw4"}],"prev":{"headline":"urllib: Cross-origin redirects preserve credential-bearing request headers, leading to potential credential leakage","id":"CVE-2026-55553"},"products":["dompdf"],"published":"2026-07-28","related":[{"cvss_score":10,"headline":"URI validation failure on SVG parsing. Bypass of CVE-2023-23924","id":"CVE-2023-24813","kev_date_added":null,"published":"2023-02-07"},{"cvss_score":10,"headline":"URI validation failure on SVG parsing in Dompdf","id":"CVE-2023-23924","kev_date_added":null,"published":"2023-01-31"},{"cvss_score":9.8,"headline":"PHAR Deserialization in dompdf/dompdf","id":"CVE-2021-3838","kev_date_added":null,"published":"2024-11-15"},{"cvss_score":9.8,"headline":"Improper Restriction of XML External Entity Reference in dompdf/dompdf","id":"CVE-2021-3902","kev_date_added":null,"published":"2024-11-15"},{"cvss_score":9.8,"headline":"Remote code injection in dompdf/dompdf","id":"CVE-2022-28368","kev_date_added":null,"published":"2022-04-03"},{"cvss_score":8.8,"headline":"DOMPDF Remote Code Execution","id":"CVE-2014-5013","kev_date_added":null,"published":"2020-01-10"},{"cvss_score":7.5,"headline":"Dompdf allows remote file inclusion because URI validation failure does not halt font registration","id":"CVE-2022-41343","kev_date_added":null,"published":"2022-09-25"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-29","vendors":["dompdf"]},"summary":"An attacker can bypass chroot restrictions in Dompdf to read sensitive files outside the allowed directory by exploiting a flawed path validation check.","url":"https://insights.sbomify.com/CVE-2026-55554/"}