{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-56709 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-56709 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-56709 is a high-severity vulnerability in getgrav grav, published on 25 Aug 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-2026-56709 and fix it if it is affected.\n\nWhat it is: CVE-2026-56709 is a high-severity vulnerability in getgrav grav, published on 25 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-56709 in the wild and no public exploit code.\n\nAffected product: getgrav grav. 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-2026-56709/ (Markdown: https://insights.sbomify.com/CVE-2026-56709/index.md)","id":"CVE-2026-56709","markdown":"https://insights.sbomify.com/CVE-2026-56709/index.md","name":"CVE-2026-56709","record":{"aliases":["GHSA-6c2c-797q-5r9x"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["account_takeover","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Grav CMS","requires_auth":"none","summary":"Attackers can manipulate Host headers to poison invitation links, redirecting users to malicious domains and bypassing trusted host protections.","user_interaction":"not_required","vuln_class":"open_redirect"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-350","name":"Reliance on Reverse DNS Resolution for a Security-Critical Action"}],"description":"Grav before 3.9.2 fails to validate untrusted Host headers in the sendInvitationEmail() function when constructing token-bearing invitation links. Attackers can manipulate the Host header to poison invitation links and redirect users to attacker-controlled domains, bypassing the require_trusted_host protection which only covers password reset flows.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Grav before 3.9.2 Host Header Injection via sendInvitationEmail","id":"CVE-2026-56709","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"open_redirect","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Grav Login Plugin before 1.0.16 Privilege Escalation via Unlock","id":"CVE-2026-56710"},"packages":[],"prev":{"headline":"Grav API Plugin before 1.0.16 SSRF via DNS Rebinding","id":"CVE-2026-56708"},"products":["grav"],"published":"2026-08-25","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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-26","vendors":["getgrav"]},"summary":"Attackers can manipulate Host headers to poison invitation links, redirecting users to malicious domains and bypassing trusted host protections.","url":"https://insights.sbomify.com/CVE-2026-56709/"}