{"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-2026-59941 exists.","fix":"Upgrade dompdf/dompdf to 3.1.6 or later.","what":"CVE-2026-59941 is a medium-severity denial of service vulnerability in dompdf, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-59941 and fix it if it is affected.\n\nWhat it is: CVE-2026-59941 is a medium-severity denial of service vulnerability in dompdf, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-59941 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-2026-59941/ (Markdown: https://insights.sbomify.com/CVE-2026-59941/index.md)","id":"CVE-2026-59941","markdown":"https://insights.sbomify.com/CVE-2026-59941/index.md","name":"CVE-2026-59941","record":{"aliases":["DEBIAN-CVE-2026-59941","GHSA-8hg6-c449-896m","UBUNTU-CVE-2026-59941"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"PHP PDF converter","requires_auth":"none","summary":"Attacker can cause excessive memory and CPU consumption via crafted BMP images in HTML, leading to denial of service in Dompdf.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"dompdf","vendor":"dompdf_project"}],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"Dompdf is an HTML to PDF converter for PHP. Versions 3.15 and prior accept a BMP image and generates a PDF-compatible PNG based only on its declared header dimensions and never bounds width × height before the image is converted through GD. A 58-byte BMP whose header declares e.g. 6000×6000 is accepted and later drives imagecreatetruecolor($width, $height) (and PHP's native BMP decoder) to allocate the full pixel canvas. A payload can fit in a single HTTP request: the BMP can be inlined as a data:image/bmp;base64,… URI inside attacker-controlled HTML, so no upload, no remote fetch, and no chroot-reachable file is required. I measured a 169-byte request driving a dompdf render to ~412 MB peak RSS and ~4.8 s of CPU/wall time, versus ~34 MB for an identically-sized benign request — roughly a 12× memory amplification per request, repeatable and unauthenticated. This issue has been fixed in version 3.16.","ecosystems":["Packagist"],"exploits":{"exploitdb":0,"first_seen":"2026-08-02","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-08-02T08:54:53Z","kind":"github_poc","ref":"https://github.com/far00t01/CVE-2026-59941","stars":0,"title":"Dompdf: Denial of Service (DoS) via Resource Exhaustion using Oversized Image Bitmaps"}],"tier":"weaponised"},"has_fix":true,"headline":"Dompdf: Uncontrolled resource consumption based on declared BMP dimensions","id":"CVE-2026-59941","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"Dompdf: Denial of Service (DoS) via Resource Exhaustion using Oversized Image Bitmaps","id":"CVE-2026-59942"},"packages":[{"ecosystem":"Packagist","fixed":["3.1.6"],"introduced":["0"],"last_affected":[],"package":"dompdf/dompdf","purl":null,"source":"GHSA-8hg6-c449-896m"},{"ecosystem":"Packagist","fixed":["3.1.6"],"introduced":["0"],"last_affected":[],"package":"dompdf/dompdf","purl":"pkg:composer/dompdf/dompdf","source":"GHSA-8hg6-c449-896m"}],"prev":{"headline":"seroval: `seroval.fromJSON()` Promise resolver type confusion invokes attacker-controlled methods during deserialization","id":"CVE-2026-59940"},"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-29","vendors":["dompdf"]},"summary":"Attacker can cause excessive memory and CPU consumption via crafted BMP images in HTML, leading to denial of service in Dompdf.","url":"https://insights.sbomify.com/CVE-2026-59941/"}