{"answers":{"affected":"1 open source package ship an affected version, including safeurl.","exploited":"There is no known exploitation of CVE-2026-77972 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-77972 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-77972 is a critical server-side request forgery vulnerability in Slab safeurl, published on 15 Sep 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-2026-77972 and fix it if it is affected.\n\nWhat it is: CVE-2026-77972 is a critical server-side request forgery vulnerability in Slab safeurl, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-77972 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- safeurl (Hex): affected from 0.1.0; 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-2026-77972/ (Markdown: https://insights.sbomify.com/CVE-2026-77972/index.md)","id":"CVE-2026-77972","markdown":"https://insights.sbomify.com/CVE-2026-77972/index.md","name":"CVE-2026-77972","record":{"aliases":["EEF-CVE-2026-77972","GHSA-pqwh-q74p-w7h4"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Elixir HTTP library","requires_auth":"none","summary":"An attacker can bypass SSRF protections in the safeurl library via DNS rebinding, allowing access to internal network resources.","user_interaction":"not_required","vuln_class":"ssrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"EEF","cpe":[],"cvss":{"score":9,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-367","name":"Time-of-check Time-of-use (TOCTOU) Race Condition"}],"description":"Time-of-check Time-of-use (TOCTOU) Race Condition in Slab safeurl allows an attacker who controls a hostname's DNS responses to reach internal network destinations that validation rejected.\n\nValidation returns a verdict and not the address it approved, so the HTTP clients the library ships receive the original hostname and resolve it a second time when the request is made. An attacker who controls the authoritative DNS for a name can answer the first lookup with a permitted address and the second with a blocked one, and the request then reaches a destination validation never approved. The same window opens without an attacker whenever a name legitimately resolves to different addresses across lookups, such as short record lifetimes or rotation between several addresses.\n\nThis issue affects safeurl: from 0.1.0 onward.","ecosystems":["Hex"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"safeurl validated address is not bound to the request, allowing DNS rebinding","id":"CVE-2026-77972","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Hex","product":null,"products":[],"type":"ssrf","year":"2026"},"n_packages":1,"n_references":3,"next":{"headline":"Softish C6 Ear Camera and EarVision Android Application Missing authentication for critical function","id":"CVE-2026-77974"},"packages":[{"ecosystem":"Hex","fixed":[],"introduced":["0.1.0"],"last_affected":[],"package":"safeurl","purl":"pkg:hex/safeurl","source":"EEF-CVE-2026-77972"}],"prev":{"headline":"Sensitive fields nested in embedded values are not redacted in AshPaperTrail versions","id":"CVE-2026-77970"},"products":["safeurl"],"published":"2026-09-15","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Erlang Ecosystem Foundation","prefix":"EEF"},{"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":"partial"},"state":"PUBLISHED","updated":"2026-09-21","vendors":["Slab"]},"summary":"An attacker can bypass SSRF protections in the safeurl library via DNS rebinding, allowing access to internal network resources.","url":"https://insights.sbomify.com/CVE-2026-77972/"}