{"answers":{"affected":"7 open source packages ship an affected version, including github.com/portainer/portainer. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-44883 exists.","fix":"Upgrade github.com/portainer/portainer to a fixed version for your release line: 2.33.8, 2.39.2 or 2.41.0.","what":"CVE-2026-44883 is a high-severity vulnerability in portainer, published on 28 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-44883 and fix it if it is affected.\n\nWhat it is: CVE-2026-44883 is a high-severity vulnerability in portainer, published on 28 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-44883 exists.\n\nAffected packages and fixed versions:\n- github.com/portainer/portainer (Go): affected all versions; no fix listed\n- github.com/portainer/portainer (Go): affected from 2.33.0; fixed in 2.33.8\n- github.com/portainer/portainer (Go): affected from 2.33.0; fixed in 2.33.8\n- github.com/portainer/portainer (Go): affected from 2.39.0; fixed in 2.39.2\n- github.com/portainer/portainer (Go): affected from 2.39.0; fixed in 2.39.2\n- github.com/portainer/portainer (Go): affected from 2.40.0; fixed in 2.41.0\n- github.com/portainer/portainer (Go): affected from 2.40.0; fixed in 2.41.0\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-2026-44883/ (Markdown: https://insights.sbomify.com/CVE-2026-44883/index.md)","id":"CVE-2026-44883","markdown":"https://insights.sbomify.com/CVE-2026-44883/index.md","name":"CVE-2026-44883","record":{"aliases":["GHSA-jvp4-q659-95mj","GO-2026-5480"],"analysis":{"component_type":"container_or_infrastructure","fix_type":"upgrade","impacts":["account_takeover","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Container management platform","requires_auth":"none","summary":"Portainer accepts JWTs in URL query parameters, leaking tokens to logs and referers, allowing attackers to hijack user sessions and access container environments.","user_interaction":"required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"portainer","vendor":"portainer"}],"cvss":{"score":7.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-598","name":"Use of HTTP Request With Sensitive Query String"}],"description":"Portainer Community Edition is a lightweight service delivery platform for containerized applications that can be used to manage Docker, Swarm, Kubernetes and ACI environments. From 2.33.0 to before 2.33.8, 2.39.2, and 2.41.0, Portainer's authentication middleware accepts JWT bearer tokens passed as the ?token=\u003cJWT\u003e URL query parameter on any authenticated API endpoint, in addition to the standard Authorization: Bearer header. URLs are recorded in reverse-proxy access logs, browser history, and HTTP Referer headers on outbound navigation, so any JWT passed this way can be harvested by anyone with access to those logs or by an external site the user subsequently visits. A leaked token grants the full privileges of the user it was issued to, until the token expires (default 8 hours, configurable). The ?token= parameter was used by Portainer's browser-based container attach, exec, and pod shell features, so any user with exec or attach rights on a container was exposed — not only administrators. This vulnerability is fixed in 2.33.8, 2.39.2, and 2.41.0.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Portainer: JWT accepted in URL query leaks tokens to logs and referers","id":"CVE-2026-44883","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":7,"n_references":1,"next":{"headline":"Portainer: Missing authorization on custom template file endpoint exposes template content","id":"CVE-2026-44884"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/portainer/portainer","purl":"pkg:golang/github.com/portainer/portainer","source":"GO-2026-5480"},{"ecosystem":"Go","fixed":["2.33.8"],"introduced":["2.33.0"],"last_affected":[],"package":"github.com/portainer/portainer","purl":null,"source":"GHSA-jvp4-q659-95mj"},{"ecosystem":"Go","fixed":["2.33.8"],"introduced":["2.33.0"],"last_affected":[],"package":"github.com/portainer/portainer","purl":"pkg:golang/github.com/portainer/portainer","source":"GHSA-jvp4-q659-95mj"},{"ecosystem":"Go","fixed":["2.39.2"],"introduced":["2.39.0"],"last_affected":[],"package":"github.com/portainer/portainer","purl":null,"source":"GHSA-jvp4-q659-95mj"},{"ecosystem":"Go","fixed":["2.39.2"],"introduced":["2.39.0"],"last_affected":[],"package":"github.com/portainer/portainer","purl":"pkg:golang/github.com/portainer/portainer","source":"GHSA-jvp4-q659-95mj"},{"ecosystem":"Go","fixed":["2.41.0"],"introduced":["2.40.0"],"last_affected":[],"package":"github.com/portainer/portainer","purl":null,"source":"GHSA-jvp4-q659-95mj"},{"ecosystem":"Go","fixed":["2.41.0"],"introduced":["2.40.0"],"last_affected":[],"package":"github.com/portainer/portainer","purl":"pkg:golang/github.com/portainer/portainer","source":"GHSA-jvp4-q659-95mj"}],"prev":{"headline":"Portainer: Kubernetes middleware continues after token validation failure, bypassing endpoint authorization","id":"CVE-2026-44882"},"products":["portainer"],"published":"2026-05-28","related":[{"cvss_score":9.9,"headline":"Missing authorization in n/a","id":"CVE-2019-16872","kev_date_added":null,"published":"2019-11-07"},{"cvss_score":9.8,"headline":"Missing authorization in n/a","id":"CVE-2022-24961","kev_date_added":null,"published":"2022-02-11"},{"cvss_score":9.8,"headline":"Missing authorization in n/a","id":"CVE-2020-24264","kev_date_added":null,"published":"2021-03-16"},{"cvss_score":9.8,"headline":"Information disclosure in n/a","id":"CVE-2018-19466","kev_date_added":null,"published":"2019-03-27"},{"cvss_score":9.8,"headline":"Auth bypass in n/a","id":"CVE-2018-19367","kev_date_added":null,"published":"2018-11-20"},{"cvss_score":9.8,"headline":"Server-side request forgery in n/a","id":"CVE-2018-12678","kev_date_added":null,"published":"2018-06-22"},{"cvss_score":9.4,"headline":"Portainer: Missing authorization on Docker plugin endpoints allows host RCE","id":"CVE-2026-44848","kev_date_added":null,"published":"2026-05-28"}],"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":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-06-02","vendors":["portainer"]},"summary":"Portainer accepts JWTs in URL query parameters, leaking tokens to logs and referers, allowing attackers to hijack user sessions and access container environments.","url":"https://insights.sbomify.com/CVE-2026-44883/"}