{"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-2026-27645 exists.","fix":"Upgrade changedetection.io to 0.53.7 or later.","what":"CVE-2026-27645 is a medium-severity cross-site scripting vulnerability in dgtlmoon changedetection.io, published on 25 Feb 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-2026-27645 and fix it if it is affected.\n\nWhat it is: CVE-2026-27645 is a medium-severity cross-site scripting vulnerability in dgtlmoon changedetection.io, published on 25 Feb 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-2026-27645 exists.\n\nAffected packages and fixed versions:\n- changedetection.io (PyPI): affected all versions; fixed in 0.53.7\n- changedetection-io (PyPI): affected all versions; fixed in 0.53.7\n- changedetection-io (PyPI): affected all versions; fixed in 0.54.1\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-2026-27645/ (Markdown: https://insights.sbomify.com/CVE-2026-27645/index.md)","id":"CVE-2026-27645","markdown":"https://insights.sbomify.com/CVE-2026-27645/index.md","name":"CVE-2026-27645","record":{"aliases":["GHSA-mw8m-398g-h89w","PYSEC-2026-2125"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Web page change detection tool","requires_auth":"none","summary":"Attackers can execute arbitrary JavaScript in victims' browsers via reflected XSS in the RSS single-watch endpoint of changedetection.io.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"changedetection","vendor":"webtechnologies"}],"cvss":{"score":6.1,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"changedetection.io is a free open source web page change detection tool. In versions prior to 0.54.1, the RSS single-watch endpoint reflects the UUID path parameter directly in the HTTP response body without HTML escaping. Since Flask returns text/html by default for plain string responses, the browser parses and executes injected JavaScript. Version 0.54.1 contains a fix for the issue.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":1,"refs":[{"date":null,"kind":"nuclei","ref":"http/cves/2026/CVE-2026-27645.yaml","stars":null,"title":"Changedetection.io RSS Single Watch - Cross-Site Scripting"}],"tier":"weaponised"},"has_fix":true,"headline":"changedetection.io Vulnerable to Reflected XSS in RSS Single Watch Error Response","id":"CVE-2026-27645","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"OpenClaw \u003c 2026.3.7 - Sandbox Escape via /acp spawn Command","id":"CVE-2026-27646"},"packages":[{"ecosystem":"PyPI","fixed":["0.53.7"],"introduced":["0"],"last_affected":[],"package":"changedetection-io","purl":"pkg:pypi/changedetection-io","source":"GHSA-mw8m-398g-h89w"},{"ecosystem":"PyPI","fixed":["0.54.1"],"introduced":["0"],"last_affected":[],"package":"changedetection-io","purl":"pkg:pypi/changedetection-io","source":"PYSEC-2026-2125"},{"ecosystem":"PyPI","fixed":["0.53.7"],"introduced":["0"],"last_affected":[],"package":"changedetection.io","purl":null,"source":"GHSA-mw8m-398g-h89w"}],"prev":{"headline":"traccar allows CSV formula injection via exported position data","id":"CVE-2026-27644"},"products":["changedetection.io"],"published":"2026-02-25","related":[{"cvss_score":9.8,"headline":"changedetection.io has an Authentication Bypass via Decorator Ordering","id":"CVE-2026-35490","kev_date_added":null,"published":"2026-04-07"},{"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)"},{"class":"attribution","licence":"MIT","name":"Nuclei templates"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-02-25","vendors":["dgtlmoon"]},"summary":"Attackers can execute arbitrary JavaScript in victims' browsers via reflected XSS in the RSS single-watch endpoint of changedetection.io.","url":"https://insights.sbomify.com/CVE-2026-27645/"}