{"answers":{"affected":"2 open source packages ship an affected version, including getgrav/grav.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-76839 exists.","fix":"Upgrade getgrav/grav to 2.0.16 or later.","what":"CVE-2026-76839 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-2026-76839 and fix it if it is affected.\n\nWhat it is: CVE-2026-76839 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-76839 exists.\n\nAffected packages and fixed versions:\n- getgrav/grav (Packagist): affected all versions; fixed in 2.0.16\n- getgrav/grav (Packagist): affected all versions; fixed in 2.0.16\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-2026-76839/ (Markdown: https://insights.sbomify.com/CVE-2026-76839/index.md)","id":"CVE-2026-76839","markdown":"https://insights.sbomify.com/CVE-2026-76839/index.md","name":"CVE-2026-76839","record":{"aliases":["GHSA-3jhr-mxmx-38cx"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Grav CMS","requires_auth":"none","summary":"Attackers with page-edit permissions can extract hashed passwords and 2FA secrets from User objects via Twig templates, enabling offline cracking and authentication bypass.","user_interaction":"not_required","vuln_class":"information_disclosure"},"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-522","name":"Insufficiently Protected Credentials"}],"description":"Grav before 2.0.16 allows sandboxed Twig templates to access sensitive User fields through allow-listed offsetGet() and offsetexists() methods that lack field filtering. Attackers with page-edit permissions can call offsetGet() on User objects to extract hashed passwords and 2FA secrets, enabling offline password cracking and authentication bypass.","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":"Grav before 2.0.16 Information Disclosure via offsetGet","id":"CVE-2026-76839","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"RustDesk through 1.4.9 Heap Buffer Overflow via Unvalidated CLIPRDR FileContentsResponse Length","id":"CVE-2026-76840"},"packages":[{"ecosystem":"Packagist","fixed":["2.0.16"],"introduced":["0"],"last_affected":[],"package":"getgrav/grav","purl":null,"source":"GHSA-3jhr-mxmx-38cx"},{"ecosystem":"Packagist","fixed":["2.0.16"],"introduced":["0"],"last_affected":[],"package":"getgrav/grav","purl":"pkg:composer/getgrav/grav","source":"GHSA-3jhr-mxmx-38cx"}],"prev":{"headline":"Hi.Events before 1.11.1-beta Server-Side Request Forgery via Unvalidated Webhook Redirects","id":"CVE-2026-76838"},"products":["grav"],"published":"2026-08-25","related":[],"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":"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":"2026-10-08","vendors":["getgrav"]},"summary":"Attackers with page-edit permissions can extract hashed passwords and 2FA secrets from User objects via Twig templates, enabling offline cracking and authentication bypass.","url":"https://insights.sbomify.com/CVE-2026-76839/"}