{"answers":{"affected":"2 open source packages ship an affected version, including spipu/html2pdf. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-45394 in the wild and no public exploit code.","fix":"Upgrade spipu/html2pdf to 5.2.4 or later.","what":"CVE-2021-45394 is a high-severity unsafe deserialization vulnerability in n/a, published on 18 Jan 2022. 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-2021-45394 and fix it if it is affected.\n\nWhat it is: CVE-2021-45394 is a high-severity unsafe deserialization vulnerability in n/a, published on 18 Jan 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-45394 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- spipu/html2pdf (Packagist): affected all versions; fixed in 5.2.4\n- spipu/html2pdf (Packagist): affected all versions; fixed in 5.2.4\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-2021-45394/ (Markdown: https://insights.sbomify.com/CVE-2021-45394/index.md)","id":"CVE-2021-45394","markdown":"https://insights.sbomify.com/CVE-2021-45394/index.md","name":"CVE-2021-45394","record":{"aliases":["GHSA-6m93-343m-3jrc"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"HTML to PDF library","requires_auth":"none","summary":"Attackers can execute arbitrary code by injecting malicious link tags into HTML documents processed by the HTML2PDF library.","user_interaction":"required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"html2pdf","vendor":"html2pdf_project"}],"cvss":{"score":8.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"},{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"description":"An issue was discovered in Spipu HTML2PDF before 5.2.4. Attackers can trigger deserialization of arbitrary data via the injection of a malicious \u003clink\u003e tag in the converted HTML document.","ecosystems":["Packagist"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Cross-site Scripting in HTML2PDF","id":"CVE-2021-45394","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"deserialization","year":"2021"},"n_packages":2,"n_references":3,"next":{"headline":"Command injection in n/a","id":"CVE-2021-45401"},"packages":[{"ecosystem":"Packagist","fixed":["5.2.4"],"introduced":["0"],"last_affected":[],"package":"spipu/html2pdf","purl":null,"source":"GHSA-6m93-343m-3jrc"},{"ecosystem":"Packagist","fixed":["5.2.4"],"introduced":["0"],"last_affected":[],"package":"spipu/html2pdf","purl":"pkg:composer/spipu/html2pdf","source":"GHSA-6m93-343m-3jrc"}],"prev":{"headline":"Memory corruption in n/a","id":"CVE-2021-45392"},"products":["n/a"],"published":"2022-01-18","related":[{"cvss_score":6.1,"headline":"Spipu HTML2PDF vulnerable to cross-site scripting","id":"CVE-2023-39062","kev_date_added":null,"published":"2023-08-28"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"Attackers can execute arbitrary code by injecting malicious link tags into HTML documents processed by the HTML2PDF library.","url":"https://insights.sbomify.com/CVE-2021-45394/"}