{"answers":{"affected":"2 open source packages ship an affected version, including com.coravy.hudson.plugins.github:github. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-42523 in the wild and no public exploit code.","fix":"Upgrade com.coravy.hudson.plugins.github:github to 1.46.0.1 or later.","what":"CVE-2026-42523 is a critical cross-site scripting vulnerability in Jenkins GitHub Plugin, published on 29 Apr 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-42523 and fix it if it is affected.\n\nWhat it is: CVE-2026-42523 is a critical cross-site scripting vulnerability in Jenkins GitHub Plugin, published on 29 Apr 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-42523 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- com.coravy.hudson.plugins.github:github (Maven): affected all versions; fixed in 1.46.0.1\n- com.coravy.hudson.plugins.github:github (Maven): affected all versions; fixed in 1.46.0.1\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-2026-42523/ (Markdown: https://insights.sbomify.com/CVE-2026-42523/index.md)","id":"CVE-2026-42523","markdown":"https://insights.sbomify.com/CVE-2026-42523/index.md","name":"CVE-2026-42523","record":{"aliases":["GHSA-w22p-4x9f-486v"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Jenkins GitHub Plugin","requires_auth":"low_privilege","summary":"Stored XSS in Jenkins GitHub Plugin allows attackers with Read permission to execute scripts via job URLs, potentially compromising user accounts.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"jenkins","cpe":[{"product":"github","vendor":"jenkins"}],"cvss":{"score":9,"severity":"critical","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Jenkins GitHub Plugin 1.46.0 and earlier improperly processes the current job URL as part of JavaScript implementing validation of the feature \"GitHub hook trigger for GITScm polling\", resulting in a stored cross-site scripting (XSS) vulnerability exploitable by non-anonymous attackers with Overall/Read permission.","ecosystems":["Maven"],"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":"Jenkins GitHub Plugin has an XSS vulnerability","id":"CVE-2026-42523","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":2,"n_references":1,"next":{"headline":"Jenkins HTML Publisher Plugin has a XSS vulnerability in the legacy wrapper file","id":"CVE-2026-42524"},"packages":[{"ecosystem":"Maven","fixed":["1.46.0.1"],"introduced":["0"],"last_affected":[],"package":"com.coravy.hudson.plugins.github:github","purl":null,"source":"GHSA-w22p-4x9f-486v"},{"ecosystem":"Maven","fixed":["1.46.0.1"],"introduced":["0"],"last_affected":[],"package":"com.coravy.hudson.plugins.github:github","purl":"pkg:maven/com.coravy.hudson.plugins.github/github","source":"GHSA-w22p-4x9f-486v"}],"prev":{"headline":"Jenkins GitHub Branch Source Plugin: Missing permissions check allows attackers to perform a connection test","id":"CVE-2026-42522"},"products":["Jenkins GitHub Plugin"],"published":"2026-04-29","related":[{"cvss_score":8.8,"headline":"CSRF vulnerability and missing permission checks in GitHub Plugin allowed capturing credentials","id":"CVE-2018-1000600","kev_date_added":null,"published":"2018-06-26"},{"cvss_score":6.5,"headline":"Jenkins GitHub Plugin exposure of sensitive information vulnerability exists","id":"CVE-2018-1000183","kev_date_added":null,"published":"2018-06-05"},{"cvss_score":5.4,"headline":"Stored XSS vulnerability in Jenkins GitHub Plugin","id":"CVE-2023-46650","kev_date_added":null,"published":"2023-10-25"},{"cvss_score":5.4,"headline":"Jenkins GitHub Plugin server-side request forgery vulnerability exists","id":"CVE-2018-1000184","kev_date_added":null,"published":"2018-06-05"},{"cvss_score":5.3,"headline":"Jenkins GitHub plugin uses weak webhook signature function","id":"CVE-2022-36885","kev_date_added":null,"published":"2022-07-27"}],"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":"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":"total"},"state":"PUBLISHED","updated":"2026-04-29","vendors":["Jenkins Project"]},"summary":"Stored XSS in Jenkins GitHub Plugin allows attackers with Read permission to execute scripts via job URLs, potentially compromising user accounts.","url":"https://insights.sbomify.com/CVE-2026-42523/"}