{"answers":{"affected":"4 open source packages ship an affected version, including craftcms/cms. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27126 exists.","fix":"Upgrade craftcms/cms to a fixed version for your release line: 4.16.19 or 5.8.23.","what":"CVE-2026-27126 is a medium-severity cross-site scripting vulnerability in Craftcms Craft Cms, published on 24 Feb 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-27126 and fix it if it is affected.\n\nWhat it is: CVE-2026-27126 is a medium-severity cross-site scripting vulnerability in Craftcms Craft Cms, published on 24 Feb 2026. Any signed-in user can exploit it over the network, 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-2026-27126 exists.\n\nAffected packages and fixed versions:\n- craftcms/cms (Packagist): affected from 4.5.0-RC1; fixed in 4.16.19\n- craftcms/cms (Packagist): affected from 4.5.0-RC1; fixed in 4.16.19\n- craftcms/cms (Packagist): affected from 5.0.0-RC1; fixed in 5.8.23\n- craftcms/cms (Packagist): affected from 5.0.0-RC1; fixed in 5.8.23\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-2026-27126/ (Markdown: https://insights.sbomify.com/CVE-2026-27126/index.md)","id":"CVE-2026-27126","markdown":"https://insights.sbomify.com/CVE-2026-27126/index.md","name":"CVE-2026-27126","record":{"aliases":["GHSA-3jh3-prx3-w6wc"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":true,"product_category":"Craft CMS","requires_auth":"low_privilege","summary":"Stored XSS in Craft CMS Table Field allows admin attackers to execute JavaScript when other users view malicious content.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"craft_cms","vendor":"craftcms"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Craft is a content management system (CMS). In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, a stored Cross-site Scripting (XSS) vulnerability exists in the `editableTable.twig` component when using the `html` column type. The application fails to sanitize the input, allowing an attacker to execute arbitrary JavaScript when another user views a page with the malicious table field. In order to exploit the vulnerability, an attacker must have an administrator account, and `allowAdminChanges` must be enabled in production, which is against Craft's security recommendations. Versions 4.16.19 and 5.8.23 patch the issue.","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":"Craft CMS has Stored XSS in Table Field via \"HTML\" Column Type","id":"CVE-2026-27126","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":"craftcms:craft_cms","products":["craftcms:craft_cms"],"type":"xss","year":"2026"},"n_packages":4,"n_references":2,"next":{"headline":"Craft CMS has Cloud Metadata SSRF Protection Bypass via DNS Rebinding","id":"CVE-2026-27127"},"packages":[{"ecosystem":"Packagist","fixed":["4.16.19"],"introduced":["4.5.0-RC1"],"last_affected":[],"package":"craftcms/cms","purl":null,"source":"GHSA-3jh3-prx3-w6wc"},{"ecosystem":"Packagist","fixed":["4.16.19"],"introduced":["4.5.0-RC1"],"last_affected":[],"package":"craftcms/cms","purl":"pkg:composer/craftcms/cms","source":"GHSA-3jh3-prx3-w6wc"},{"ecosystem":"Packagist","fixed":["5.8.23"],"introduced":["5.0.0-RC1"],"last_affected":[],"package":"craftcms/cms","purl":null,"source":"GHSA-3jh3-prx3-w6wc"},{"ecosystem":"Packagist","fixed":["5.8.23"],"introduced":["5.0.0-RC1"],"last_affected":[],"package":"craftcms/cms","purl":"pkg:composer/craftcms/cms","source":"GHSA-3jh3-prx3-w6wc"}],"prev":{"headline":"Svelte SSR attribute spreading includes inherited properties from prototype chain","id":"CVE-2026-27125"},"products":["cms"],"published":"2026-02-24","related":[{"cvss_score":10,"headline":"Craft CMS Code Injection","id":"CVE-2025-32432","kev_date_added":"2026-03-20","published":"2025-04-25"},{"cvss_score":9.3,"headline":"Craft CMS Code Injection","id":"CVE-2024-56145","kev_date_added":"2025-06-02","published":"2024-12-18"},{"cvss_score":8.1,"headline":"Craft CMS Code Injection","id":"CVE-2025-23209","kev_date_added":"2025-02-20","published":"2025-01-18"},{"cvss_score":6.9,"headline":"Craft CMS External Control of Assumed-Immutable Web Parameter","id":"CVE-2025-35939","kev_date_added":"2025-06-02","published":"2025-05-07"},{"cvss_score":10,"headline":"Craft CMS Remote Code Execution vulnerability","id":"CVE-2023-41892","kev_date_added":null,"published":"2023-09-13"},{"cvss_score":9.8,"headline":"Craft CMS Remote Code Injection","id":"CVE-2021-27903","kev_date_added":null,"published":"2021-06-30"},{"cvss_score":9.8,"headline":"SEOmatic for CraftCMS allows Server-Side Template Injection","id":"CVE-2020-9757","kev_date_added":null,"published":"2020-03-04"}],"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":"2026-02-24","vendors":["craftcms"]},"summary":"Stored XSS in Craft CMS Table Field allows admin attackers to execute JavaScript when other users view malicious content.","url":"https://insights.sbomify.com/CVE-2026-27126/"}