{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-84203 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-84203 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-84203 is a high-severity authentication bypass vulnerability in usememos memos, published on 1 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-84203 and fix it if it is affected.\n\nWhat it is: CVE-2026-84203 is a high-severity authentication bypass vulnerability in usememos memos, published on 1 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-84203 in the wild and no public exploit code.\n\nAffected product: usememos memos. 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-2026-84203/ (Markdown: https://insights.sbomify.com/CVE-2026-84203/index.md)","id":"CVE-2026-84203","markdown":"https://insights.sbomify.com/CVE-2026-84203/index.md","name":"CVE-2026-84203","record":{"aliases":["GHSA-47v8-26mf-hw38"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Memos self-hosted notes","requires_auth":"low_privilege","summary":"Attackers with stolen refresh tokens maintain account access after password changes because Memos fails to revoke existing sessions.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-613","name":"DEPRECATED: Insufficient Session Expiration"}],"description":"Memos versions 0.26.0 through 0.30.0 fail to revoke refresh tokens when a user changes their password, allowing attackers to maintain account access. An attacker with a stolen refresh token can call the RefreshToken RPC to obtain new access tokens and rotate the refresh token indefinitely, bypassing the password change security measure.","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":"Memos 0.26.0 through 0.30.0 Insufficient Session Expiration on Password Change","id":"CVE-2026-84203","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"GROWI through 8.0.2 Missing Authorization on apiv3 Attachment Retrieval","id":"CVE-2026-84204"},"packages":[],"prev":{"headline":"ModelScope through 1.40.0 Unsafe YAML Deserialization in Model Config Loading","id":"CVE-2026-84202"},"products":["memos"],"published":"2026-09-01","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":"total"},"state":"PUBLISHED","updated":"2026-09-01","vendors":["usememos"]},"summary":"Attackers with stolen refresh tokens maintain account access after password changes because Memos fails to revoke existing sessions.","url":"https://insights.sbomify.com/CVE-2026-84203/"}