{"answers":{"affected":"3 open source packages ship an affected version, including code.gitea.io/gitea. It affects 1 product.","exploited":"There is no known exploitation of CVE-2018-18926 in the wild and no public exploit code.","fix":"Upgrade code.gitea.io/gitea to 1.5.2 or later.","what":"CVE-2018-18926 is a critical authentication bypass vulnerability in Gitea Gitea, published on 4 Nov 2018. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2018-18926 and fix it if it is affected.\n\nWhat it is: CVE-2018-18926 is a critical authentication bypass vulnerability in Gitea Gitea, published on 4 Nov 2018. 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-2018-18926 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- code.gitea.io/gitea (Go): affected all versions; fixed in 1.5.2\n- code.gitea.io/gitea (Go): affected all versions; fixed in 1.5.2\n- code.gitea.io/gitea (Go): affected all versions; fixed in 1.5.2\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-2018-18926/ (Markdown: https://insights.sbomify.com/CVE-2018-18926/index.md)","id":"CVE-2018-18926","markdown":"https://insights.sbomify.com/CVE-2018-18926/index.md","name":"CVE-2018-18926","record":{"aliases":["GHSA-hf6f-jq25-8gq9","GO-2022-0844","UBUNTU-CVE-2018-18926"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Gitea Git hosting","requires_auth":"none","summary":"Attackers can hijack sessions due to improper session ID validation in Gitea, leading to remote code execution and account takeover.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"gitea","vendor":"gitea"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-384","name":"Session Fixation"}],"description":"Gitea before 1.5.4 allows remote code execution because it does not properly validate session IDs. This is related to session ID handling in the go-macaron/session code for Macaron.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Gitea Remote Code Execution (RCE)","id":"CVE-2018-18926","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":"gitea:gitea","products":["gitea:gitea"],"type":"auth_bypass","year":"2018"},"n_packages":3,"n_references":1,"next":{"headline":"Cross-site scripting in n/a","id":"CVE-2018-18927"},"packages":[{"ecosystem":"Go","fixed":["1.5.2"],"introduced":["0"],"last_affected":[],"package":"code.gitea.io/gitea","purl":null,"source":"GHSA-hf6f-jq25-8gq9"},{"ecosystem":"Go","fixed":["1.5.2"],"introduced":["0"],"last_affected":[],"package":"code.gitea.io/gitea","purl":"pkg:golang/code.gitea.io/gitea","source":"GHSA-hf6f-jq25-8gq9"},{"ecosystem":"Go","fixed":["1.5.2"],"introduced":["0"],"last_affected":[],"package":"code.gitea.io/gitea","purl":"pkg:golang/code.gitea.io/gitea","source":"GO-2022-0844"}],"prev":{"headline":"Path traversal in n/a","id":"CVE-2018-18925"},"products":["n/a"],"published":"2018-11-04","related":[{"cvss_score":9.8,"headline":"Gitea Code Injection","id":"CVE-2026-60004","kev_date_added":"2026-08-25","published":"2026-08-26"},{"cvss_score":9.8,"headline":"Gitea WebAuthn bypass during OAuth and OIDC sign-in","id":"CVE-2026-73278","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":9.8,"headline":"Gitea fork workflow approval bypass through maintainer-triggered events","id":"CVE-2026-94205","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":9.8,"headline":"Gitea vulnerable to Argument Injection","id":"CVE-2022-42968","kev_date_added":null,"published":"2022-10-16"},{"cvss_score":9.8,"headline":"Improper Privilege Management in Gitea","id":"CVE-2021-45330","kev_date_added":null,"published":"2022-02-09"},{"cvss_score":9.8,"headline":"Reuse of one time passwords allowed in Gitea","id":"CVE-2021-45331","kev_date_added":null,"published":"2022-02-09"},{"cvss_score":9.8,"headline":"Capture-replay in Gitea","id":"CVE-2021-45327","kev_date_added":null,"published":"2022-02-08"}],"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":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["n/a"]},"summary":"Attackers can hijack sessions due to improper session ID validation in Gitea, leading to remote code execution and account takeover.","url":"https://insights.sbomify.com/CVE-2018-18926/"}