{"answers":{"affected":"7 open source packages ship an affected version, including keystone. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-42998 in the wild and no public exploit code.","fix":"Upgrade keystone to a fixed version for your release line: 27.0.2, 28.0.2 or 29.0.2.","what":"CVE-2026-42998 is a medium-severity authentication bypass vulnerability in OpenStack Keystone, published on 28 May 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-42998 and fix it if it is affected.\n\nWhat it is: CVE-2026-42998 is a medium-severity authentication bypass vulnerability in OpenStack Keystone, published on 28 May 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-2026-42998 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- keystone (PyPI): affected from 14.0.0; fixed in 27.0.2, 28.0.2, 29.0.2\n- keystone (PyPI): affected from 14.0.0; fixed in 27.0.2\n- keystone (PyPI): affected from 14.0.0; fixed in 27.0.2\n- keystone (PyPI): affected from 28.0.0; fixed in 28.0.2\n- keystone (PyPI): affected from 28.0.0; fixed in 28.0.2\n- keystone (PyPI): affected from 29.0.0; fixed in 29.0.2\n- keystone (PyPI): affected from 29.0.0; fixed in 29.0.2\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-2026-42998/ (Markdown: https://insights.sbomify.com/CVE-2026-42998/index.md)","id":"CVE-2026-42998","markdown":"https://insights.sbomify.com/CVE-2026-42998/index.md","name":"CVE-2026-42998","record":{"aliases":["DEBIAN-CVE-2026-42998","GHSA-8f8m-wrvr-wcvf","PYSEC-2026-599"],"analysis":{"component_type":"cloud_service","fix_type":"upgrade","impacts":["privilege_escalation","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"OpenStack Identity","requires_auth":"low_privilege","summary":"Attackers can impersonate other users by mismatching application credential owners, enabling audit evasion and unauthorized access in OpenStack Keystone.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"keystone","vendor":"openstack"}],"cvss":{"score":6,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"An issue was discovered in OpenStack Keystone before 29.0.2. The Keystone application credential authentication plugin does not verify that the user supplied in the authentication request matches the owner of the application credential. An attacker can authenticate with their own application credential ID and secret while specifying a different user's name and domain in the request body. Keystone issues a token attributed to the victim user. The impersonated token is project-scoped and carries the intersection of the application credential's roles and the victim's actual roles on the project. This enables audit evasion, reading the victim's credentials, and acting as the victim within shared projects.","ecosystems":["PyPI"],"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":"OpenStack Keystone doesn't verify that the user supplied in the authentication request matches the owner of the application credential","id":"CVE-2026-42998","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":7,"n_references":2,"next":{"headline":"OpenStack Keystone has an Authorization Bypass","id":"CVE-2026-42999"},"packages":[{"ecosystem":"PyPI","fixed":["27.0.2","28.0.2","29.0.2"],"introduced":["14.0.0","28.0.0","29.0.0"],"last_affected":[],"package":"keystone","purl":"pkg:pypi/keystone","source":"PYSEC-2026-599"},{"ecosystem":"PyPI","fixed":["27.0.2"],"introduced":["14.0.0"],"last_affected":[],"package":"keystone","purl":null,"source":"GHSA-8f8m-wrvr-wcvf"},{"ecosystem":"PyPI","fixed":["27.0.2"],"introduced":["14.0.0"],"last_affected":[],"package":"keystone","purl":"pkg:pypi/keystone","source":"GHSA-8f8m-wrvr-wcvf"},{"ecosystem":"PyPI","fixed":["28.0.2"],"introduced":["28.0.0"],"last_affected":[],"package":"keystone","purl":null,"source":"GHSA-8f8m-wrvr-wcvf"},{"ecosystem":"PyPI","fixed":["28.0.2"],"introduced":["28.0.0"],"last_affected":[],"package":"keystone","purl":"pkg:pypi/keystone","source":"GHSA-8f8m-wrvr-wcvf"},{"ecosystem":"PyPI","fixed":["29.0.2"],"introduced":["29.0.0"],"last_affected":[],"package":"keystone","purl":null,"source":"GHSA-8f8m-wrvr-wcvf"},{"ecosystem":"PyPI","fixed":["29.0.2"],"introduced":["29.0.0"],"last_affected":[],"package":"keystone","purl":"pkg:pypi/keystone","source":"GHSA-8f8m-wrvr-wcvf"}],"prev":{"headline":"OpenStack Ironic has an Incorrect Resource Transfer Between Spheres","id":"CVE-2026-42997"},"products":["Keystone"],"published":"2026-05-28","related":[{"cvss_score":8.8,"headline":"Insufficient Session Expiration in OpenStack Keystone","id":"CVE-2020-12690","kev_date_added":null,"published":"2020-05-06"},{"cvss_score":8.8,"headline":"OpenStack Keystone Credential Leakage","id":"CVE-2019-19687","kev_date_added":null,"published":"2019-12-09"},{"cvss_score":7.9,"headline":"OpenStack Keystone has an Incorrect Authorization Issue","id":"CVE-2026-43001","kev_date_added":null,"published":"2026-05-01"},{"cvss_score":7.8,"headline":"OpenStack Identity (Keystone) DoS through V3 API authentication chaining","id":"CVE-2014-2828","kev_date_added":null,"published":"2014-04-15"},{"cvss_score":7.5,"headline":"OpenStack Keystone allows information disclosure during account locking","id":"CVE-2021-38155","kev_date_added":null,"published":"2021-08-06"},{"cvss_score":7.5,"headline":"OpenStack Identity Keystone and keystonemiddleware Insufficiently Protected Credentials","id":"CVE-2015-7546","kev_date_added":null,"published":"2016-02-03"},{"cvss_score":7.5,"headline":"OpenStack Keystone Improper Authentication vulnerability","id":"CVE-2012-4456","kev_date_added":null,"published":"2012-10-09"}],"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":"PyPA Advisory Database","prefix":"PYSEC"},{"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-28","vendors":["OpenStack"]},"summary":"Attackers can impersonate other users by mismatching application credential owners, enabling audit evasion and unauthorized access in OpenStack Keystone.","url":"https://insights.sbomify.com/CVE-2026-42998/"}