{"answers":{"affected":"4 open source packages ship an affected version, including heckel.io/ntfy/v2 and heckel.io/ntfy.","exploited":"There is no known exploitation of CVE-2026-39087 in the wild and no public exploit code.","fix":"Upgrade heckel.io/ntfy/v2 to 2.22.0 or later.","what":"CVE-2026-39087 is a medium-severity server-side request forgery vulnerability in ntfy, published on 23 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-39087 and fix it if it is affected.\n\nWhat it is: CVE-2026-39087 is a medium-severity server-side request forgery vulnerability in ntfy, published on 23 Apr 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-2026-39087 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- heckel.io/ntfy/v2 (Go): affected all versions; fixed in 2.22.0\n- heckel.io/ntfy/v2 (Go): affected all versions; fixed in 2.22.0\n- heckel.io/ntfy/v2 (Go): affected all versions; fixed in 2.22.0\n- heckel.io/ntfy (Go): affected all versions; no fix listed\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-2026-39087/ (Markdown: https://insights.sbomify.com/CVE-2026-39087/index.md)","id":"CVE-2026-39087","markdown":"https://insights.sbomify.com/CVE-2026-39087/index.md","name":"CVE-2026-39087","record":{"aliases":["GHSA-pqhx-w72w-m393","GO-2026-5551","UBUNTU-CVE-2026-39087"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"ntfy notification server","requires_auth":"low_privilege","summary":"Attackers can exploit an unanchored regex in ntfy to perform Server-Side Request Forgery, potentially accessing internal resources.","user_interaction":"not_required","vuln_class":"ssrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[],"cvss":{"score":6.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-94","name":"Improper Control of Generation of Code"},{"id":"CWE-777","name":"Regular Expression without Anchors"}],"description":"ntfy before 2.22.0 allows SSRF because of an unanchored regular expression for web push endpoint URLs.","ecosystems":["Go"],"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":"ntfy.sh allows a remote attacker to execute arbitrary code via the parseActions function","id":"CVE-2026-39087","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"ssrf","year":"2026"},"n_packages":4,"n_references":3,"next":{"headline":"Memory corruption in n/a","id":"CVE-2026-39103"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"heckel.io/ntfy","purl":"pkg:golang/heckel.io/ntfy","source":"GO-2026-5551"},{"ecosystem":"Go","fixed":["2.22.0"],"introduced":["0"],"last_affected":[],"package":"heckel.io/ntfy/v2","purl":null,"source":"GHSA-pqhx-w72w-m393"},{"ecosystem":"Go","fixed":["2.22.0"],"introduced":["0"],"last_affected":[],"package":"heckel.io/ntfy/v2","purl":"pkg:golang/heckel.io/ntfy/v2","source":"GHSA-pqhx-w72w-m393"},{"ecosystem":"Go","fixed":["2.22.0"],"introduced":["0"],"last_affected":[],"package":"heckel.io/ntfy/v2","purl":"pkg:golang/heckel.io/ntfy/v2","source":"GO-2026-5551"}],"prev":{"headline":"Information disclosure in n/a","id":"CVE-2026-39079"},"products":["ntfy"],"published":"2026-04-23","related":[],"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":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-07-05","vendors":["ntfy"]},"summary":"Attackers can exploit an unanchored regex in ntfy to perform Server-Side Request Forgery, potentially accessing internal resources.","url":"https://insights.sbomify.com/CVE-2026-39087/"}