{"answers":{"affected":"6 open source packages ship an affected version, including sylius/sylius. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-31821 exists.","fix":"Upgrade sylius/sylius to a fixed version for your release line: 2.0.16, 2.1.12 or 2.2.3.","what":"CVE-2026-31821 is a medium-severity missing authorization vulnerability in Sylius, published on 10 Mar 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-2026-31821 and fix it if it is affected.\n\nWhat it is: CVE-2026-31821 is a medium-severity missing authorization vulnerability in Sylius, published on 10 Mar 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-2026-31821 exists.\n\nAffected packages and fixed versions:\n- sylius/sylius (Packagist): affected from 2.0.0; fixed in 2.0.16\n- sylius/sylius (Packagist): affected from 2.0.0; fixed in 2.0.16\n- sylius/sylius (Packagist): affected from 2.1.0; fixed in 2.1.12\n- sylius/sylius (Packagist): affected from 2.1.0; fixed in 2.1.12\n- sylius/sylius (Packagist): affected from 2.2.0; fixed in 2.2.3\n- sylius/sylius (Packagist): affected from 2.2.0; fixed in 2.2.3\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-2026-31821/ (Markdown: https://insights.sbomify.com/CVE-2026-31821/index.md)","id":"CVE-2026-31821","markdown":"https://insights.sbomify.com/CVE-2026-31821/index.md","name":"CVE-2026-31821","record":{"aliases":["GHSA-wjmg-4cq5-m8hg"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Sylius eCommerce Framework","requires_auth":"none","summary":"Unauthenticated attackers can add items to other customers' carts by exploiting missing ownership verification in the Sylius API v2 add item endpoint.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"sylius","vendor":"sylius"}],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"Sylius is an Open Source eCommerce Framework on Symfony. The POST /api/v2/shop/orders/{tokenValue}/items endpoint does not verify cart ownership. An unauthenticated attacker can add items to other registered customers' carts by knowing the cart tokenValue. An attacker who obtains a cart tokenValue can add arbitrary items to another customer's cart. The endpoint returns the full cart representation in the response (HTTP 201). The issue is fixed in versions: 2.0.16, 2.1.12, 2.2.3 and above.","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":"Sylius is Missing Authorization in API v2 Add Item Endpoint","id":"CVE-2026-31821","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":6,"n_references":1,"next":{"headline":"Sylius has a XSS vulnerability in checkout login form","id":"CVE-2026-31822"},"packages":[{"ecosystem":"Packagist","fixed":["2.0.16"],"introduced":["2.0.0"],"last_affected":[],"package":"sylius/sylius","purl":null,"source":"GHSA-wjmg-4cq5-m8hg"},{"ecosystem":"Packagist","fixed":["2.0.16"],"introduced":["2.0.0"],"last_affected":[],"package":"sylius/sylius","purl":"pkg:composer/sylius/sylius","source":"GHSA-wjmg-4cq5-m8hg"},{"ecosystem":"Packagist","fixed":["2.1.12"],"introduced":["2.1.0"],"last_affected":[],"package":"sylius/sylius","purl":null,"source":"GHSA-wjmg-4cq5-m8hg"},{"ecosystem":"Packagist","fixed":["2.1.12"],"introduced":["2.1.0"],"last_affected":[],"package":"sylius/sylius","purl":"pkg:composer/sylius/sylius","source":"GHSA-wjmg-4cq5-m8hg"},{"ecosystem":"Packagist","fixed":["2.2.3"],"introduced":["2.2.0"],"last_affected":[],"package":"sylius/sylius","purl":null,"source":"GHSA-wjmg-4cq5-m8hg"},{"ecosystem":"Packagist","fixed":["2.2.3"],"introduced":["2.2.0"],"last_affected":[],"package":"sylius/sylius","purl":"pkg:composer/sylius/sylius","source":"GHSA-wjmg-4cq5-m8hg"}],"prev":{"headline":"Sylius affected by IDOR in Cart and Checkout LiveComponents","id":"CVE-2026-31820"},"products":["Sylius"],"published":"2026-03-10","related":[{"cvss_score":8.2,"headline":"Sylius has a Promotion Usage Limit Bypass via Race Condition","id":"CVE-2026-31824","kev_date_added":null,"published":"2026-03-10"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2024-57610","kev_date_added":null,"published":"2025-02-06"},{"cvss_score":7.1,"headline":"Sylius affected by IDOR in Cart and Checkout LiveComponents","id":"CVE-2026-31820","kev_date_added":null,"published":"2026-03-10"},{"cvss_score":7.1,"headline":"Insufficient Session Expiration in Sylius","id":"CVE-2022-24743","kev_date_added":null,"published":"2022-03-14"},{"cvss_score":6.9,"headline":"Sylius has an Open Redirect via Referer Header","id":"CVE-2026-31819","kev_date_added":null,"published":"2026-03-10"},{"cvss_score":6.4,"headline":"Sylius has potential Cross Site Scripting vulnerability via the \"Province\" field in the Checkout and Address Book","id":"CVE-2024-29376","kev_date_added":null,"published":"2024-04-22"}],"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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-11","vendors":["Sylius"]},"summary":"Unauthenticated attackers can add items to other customers' carts by exploiting missing ownership verification in the Sylius API v2 add item endpoint.","url":"https://insights.sbomify.com/CVE-2026-31821/"}