{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-16270 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-16270 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-16270 is a medium-severity denial of service vulnerability in Open Mercato, published on 22 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-16270 and fix it if it is affected.\n\nWhat it is: CVE-2026-16270 is a medium-severity denial of service vulnerability in Open Mercato, published on 22 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-16270 in the wild and no public exploit code.\n\nAffected product: Open Mercato. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-16270/ (Markdown: https://insights.sbomify.com/CVE-2026-16270/index.md)","id":"CVE-2026-16270","markdown":"https://insights.sbomify.com/CVE-2026-16270/index.md","name":"CVE-2026-16270","record":{"aliases":["GHSA-gchv-qq48-9rjw"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Open Mercato","requires_auth":"high_privilege","summary":"An attacker with privileges can inject unsafe regex rules in Open Mercato, causing a denial of service when specific strings are processed.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CERT-PL","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-1333","name":"Inefficient Regular Expression Complexity"}],"description":"Open Mercato does not validate regex rules. An attacker with privileges to create the regex rule can add an unsafe regex to a field. When someone provide the proper string it can result in a DoS attack.\n\nThis issue was fixed in version 0.6.4.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"ReDoS in Open Mercato","id":"CVE-2026-16270","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Client IP Spoofing via Untrusted HTTP Headers in PayTR's PayTR Virtual Pos iFrame API WHMCS Module","id":"CVE-2026-16272"},"packages":[],"prev":{"headline":"Newsletters \u003c 4.16 - Unauthenticated API Authentication Bypass via Type Juggling","id":"CVE-2026-16269"},"products":["Open Mercato"],"published":"2026-07-22","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-22","vendors":["Open Mercato"]},"summary":"An attacker with privileges can inject unsafe regex rules in Open Mercato, causing a denial of service when specific strings are processed.","url":"https://insights.sbomify.com/CVE-2026-16270/"}