{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-13163 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-13163 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-13163 is a medium-severity vulnerability in Mailerup, published on 24 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-13163 and fix it if it is affected.\n\nWhat it is: CVE-2026-13163 is a medium-severity vulnerability in Mailerup, published on 24 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-13163 in the wild and no public exploit code.\n\nAffected product: Mailerup. 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-2026-13163/ (Markdown: https://insights.sbomify.com/CVE-2026-13163/index.md)","id":"CVE-2026-13163","markdown":"https://insights.sbomify.com/CVE-2026-13163/index.md","name":"CVE-2026-13163","record":{"aliases":["GHSA-wfgr-g7h2-c6m6"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Mailerup email service","requires_auth":"none","summary":"Remote attackers can redirect users to malicious sites via crafted parameters in Mailerup, enabling phishing attacks due to missing host validation.","user_interaction":"required","vuln_class":"open_redirect"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Secur0","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-601","name":"URL Redirection to Untrusted Site"}],"description":"Open redirect vulnerability (CWE-601) in the _safe_redirect function of the click-tracking endpoint (/c/\u003ctoken\u003e/) in Mailerup \u003c1.0.0 on all platforms allows remote unauthenticated attackers to redirect victims to arbitrary external sites and conduct phishing attacks via a crafted u query parameter, because the URL scheme is validated (blocking javascript: and data:) but the destination host is not restricted to an allowlist, and a signing.BadSignature exception is silently caught so a valid signed token is not required.","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":"Lack of input validation in Mailerup input parameter leads to Open Redirect","id":"CVE-2026-13163","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"open_redirect","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Unauthenticated self-registration in MailerUp allows access to stored email data","id":"CVE-2026-13164"},"packages":[],"prev":{"headline":"An OS command vulnerability exists in CoreTec product that allows authenticated users with certain roles to execute arbitrary system command","id":"CVE-2026-13162"},"products":["Mailerup"],"published":"2026-06-24","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":"2026-06-24","vendors":["Mailerup"]},"summary":"Remote attackers can redirect users to malicious sites via crafted parameters in Mailerup, enabling phishing attacks due to missing host validation.","url":"https://insights.sbomify.com/CVE-2026-13163/"}