{"answers":{"affected":"2 open source packages ship an affected version, including dompurify. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-26791 exists.","fix":"Upgrade dompurify to 3.2.4 or later.","what":"CVE-2025-26791 is a medium-severity cross-site scripting vulnerability in Cure53 DOMPurify, published on 14 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-26791 and fix it if it is affected.\n\nWhat it is: CVE-2025-26791 is a medium-severity cross-site scripting vulnerability in Cure53 DOMPurify, published on 14 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-26791 exists.\n\nAffected packages and fixed versions:\n- dompurify (npm): affected all versions; fixed in 3.2.4\n- dompurify (npm): affected all versions; fixed in 3.2.4\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-2025-26791/ (Markdown: https://insights.sbomify.com/CVE-2025-26791/index.md)","id":"CVE-2025-26791","markdown":"https://insights.sbomify.com/CVE-2025-26791/index.md","name":"CVE-2025-26791","record":{"aliases":["CLSA-2026-1774398078","CLSA-2026-1778201083","DEBIAN-CVE-2025-26791","GHSA-vhxf-7vqr-mrjg","ROOT-APP-NPM-CVE-2025-26791","UBUNTU-CVE-2025-26791","openSUSE-SU-2025:14921-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"JavaScript sanitization library","requires_auth":"none","summary":"An attacker can execute arbitrary JavaScript via mutation XSS due to a flawed regex in DOMPurify, affecting applications using this library.","user_interaction":"not_required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"dompurify","vendor":"cure53"}],"cvss":{"score":4.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"DOMPurify before 3.2.4 has an incorrect template literal regular expression, sometimes leading to mutation cross-site scripting (mXSS).","ecosystems":["npm","openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"DOMPurify allows Cross-site Scripting (XSS)","id":"CVE-2025-26791","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"xss","year":"2025"},"n_packages":3,"n_references":4,"next":{"headline":"Hardcoded credentials in Enterphone MESH","id":"CVE-2025-26793"},"packages":[{"ecosystem":"npm","fixed":["3.2.4"],"introduced":["0"],"last_affected":[],"package":"dompurify","purl":null,"source":"GHSA-vhxf-7vqr-mrjg"},{"ecosystem":"npm","fixed":["3.2.4"],"introduced":["0"],"last_affected":[],"package":"dompurify","purl":"pkg:npm/dompurify","source":"GHSA-vhxf-7vqr-mrjg"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["2.14.8-1.1"],"introduced":["0"],"last_affected":[],"package":"argocd-cli","purl":"pkg:rpm/opensuse/argocd-cli\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2025:14921-1"}],"prev":{"headline":"Memory corruption in Atlant","id":"CVE-2025-26790"},"products":["DOMPurify"],"published":"2025-02-14","related":[{"cvss_score":10,"headline":"DOMPurify nesting-based mXSS","id":"CVE-2024-47875","kev_date_added":null,"published":"2024-10-11"},{"cvss_score":9.1,"headline":"DOMPurify vulnerable to tampering by prototype polution","id":"CVE-2024-48910","kev_date_added":null,"published":"2024-10-31"},{"cvss_score":8.2,"headline":"DOMPurify XSS via `selectedcontent` re-clone","id":"CVE-2026-47423","kev_date_added":null,"published":"2026-07-14"},{"cvss_score":7.3,"headline":"Tampering by prototype polution in DOMPurify","id":"CVE-2024-45801","kev_date_added":null,"published":"2024-09-16"},{"cvss_score":6.3,"headline":"DOMPurify IN_PLACE Sanitization Bypass via Attached Shadow Root Inside \u003ctemplate\u003e.content","id":"CVE-2026-49978","kev_date_added":null,"published":"2026-07-14"},{"cvss_score":6.1,"headline":"DOMPurify: Cross-realm IN_PLACE sanitization leaves executable markup intact via realm-bound `instanceof` checks","id":"CVE-2026-49458","kev_date_added":null,"published":"2026-07-14"},{"cvss_score":6.1,"headline":"DOMPurify: IN_PLACE mode preserves attributes of a clobbered root element, allowing XSS via attacker-controlled root DOM","id":"CVE-2026-49459","kev_date_added":null,"published":"2026-07-14"}],"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":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"2025-02-14","vendors":["Cure53"]},"summary":"An attacker can execute arbitrary JavaScript via mutation XSS due to a flawed regex in DOMPurify, affecting applications using this library.","url":"https://insights.sbomify.com/CVE-2025-26791/"}