{"answers":{"affected":"3 open source packages ship an affected version, including changedetection.io and changedetection-io. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-35490 exists.","fix":"Upgrade changedetection.io to 0.54.8 or later.","what":"CVE-2026-35490 is a critical authentication bypass vulnerability in dgtlmoon changedetection.io, published on 7 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-35490 and fix it if it is affected.\n\nWhat it is: CVE-2026-35490 is a critical authentication bypass vulnerability in dgtlmoon changedetection.io, published on 7 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-35490 exists.\n\nAffected packages and fixed versions:\n- changedetection.io (PyPI): affected all versions; fixed in 0.54.8\n- changedetection-io (PyPI): affected all versions; fixed in 0.54.8\n- changedetection-io (PyPI): affected all versions; fixed in 0.54.8\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-2026-35490/ (Markdown: https://insights.sbomify.com/CVE-2026-35490/index.md)","id":"CVE-2026-35490","markdown":"https://insights.sbomify.com/CVE-2026-35490/index.md","name":"CVE-2026-35490","record":{"aliases":["GHSA-jmrh-xmgh-x9j4","PYSEC-2026-28"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Web page change detection tool","requires_auth":"none","summary":"Attackers can bypass authentication on specific routes due to incorrect decorator ordering in changedetection.io, allowing unauthorized access to protected features.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"changedetection","vendor":"webtechnologies"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"changedetection.io is a free open source web page change detection tool. Prior to 0.54.8, the @login_optionally_required decorator is placed before (outer to) @blueprint.route() instead of after it. In Flask, @route() must be the outermost decorator because it registers the function it receives. When the order is reversed, @route() registers the original undecorated function, and the auth wrapper is never in the call chain. This silently disables authentication on these routes. This vulnerability is fixed in 0.54.8.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"changedetection.io has an Authentication Bypass via Decorator Ordering","id":"CVE-2026-35490","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":3,"n_references":1,"next":{"headline":"Pi-hole FTL: CLI API sessions can import Teleporter archives and modify configuration","id":"CVE-2026-35491"},"packages":[{"ecosystem":"PyPI","fixed":["0.54.8"],"introduced":["0"],"last_affected":[],"package":"changedetection-io","purl":"pkg:pypi/changedetection-io","source":"GHSA-jmrh-xmgh-x9j4"},{"ecosystem":"PyPI","fixed":["0.54.8"],"introduced":["0"],"last_affected":[],"package":"changedetection-io","purl":"pkg:pypi/changedetection-io","source":"PYSEC-2026-28"},{"ecosystem":"PyPI","fixed":["0.54.8"],"introduced":["0"],"last_affected":[],"package":"changedetection.io","purl":null,"source":"GHSA-jmrh-xmgh-x9j4"}],"prev":{"headline":"Tandoor Recipes — `amount`/`unit` bypass serializer in `food/{id}/shopping/`","id":"CVE-2026-35489"},"products":["changedetection.io"],"published":"2026-04-07","related":[{"cvss_score":8.8,"headline":"changedetection.io: XPath - Arbitrary File Read via unparsed-text()","id":"CVE-2026-29039","kev_date_added":null,"published":"2026-03-06"},{"cvss_score":8.8,"headline":"changedetection.io: Zip Slip vulnerability in the backup restore functionality","id":"CVE-2026-29065","kev_date_added":null,"published":"2026-03-06"},{"cvss_score":8.6,"headline":"changedetection.io Vulnerable to Server-Side Request Forgery (SSRF) via Watch URLs","id":"CVE-2026-27696","kev_date_added":null,"published":"2026-02-25"},{"cvss_score":8.3,"headline":"Changedetection.io Discloses Environment Variables via jq env Builtin in Include Filters","id":"CVE-2026-33981","kev_date_added":null,"published":"2026-03-27"},{"cvss_score":8.2,"headline":"changedetection.io: XXE vulnerability in the changedetection.io project","id":"CVE-2026-41895","kev_date_added":null,"published":"2026-05-12"},{"cvss_score":7.5,"headline":"changedetection.io: Arbitrary Local File Read via crafted backup restore","id":"CVE-2026-43891","kev_date_added":null,"published":"2026-05-12"}],"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":"yes","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-04-09","vendors":["dgtlmoon"]},"summary":"Attackers can bypass authentication on specific routes due to incorrect decorator ordering in changedetection.io, allowing unauthorized access to protected features.","url":"https://insights.sbomify.com/CVE-2026-35490/"}