{"answers":{"affected":"2 open source packages ship an affected version, including svelte. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-15265 exists.","fix":"Upgrade svelte to 5.46.4 or later.","what":"CVE-2025-15265 is a medium-severity cross-site scripting vulnerability in Svelte, published on 15 Jan 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-2025-15265 and fix it if it is affected.\n\nWhat it is: CVE-2025-15265 is a medium-severity cross-site scripting vulnerability in Svelte, published on 15 Jan 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-2025-15265 exists.\n\nAffected packages and fixed versions:\n- svelte (npm): affected from 5.46.0; fixed in 5.46.4\n- svelte (npm): affected from 5.46.0; fixed in 5.46.4\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-2025-15265/ (Markdown: https://insights.sbomify.com/CVE-2025-15265/index.md)","id":"CVE-2025-15265","markdown":"https://insights.sbomify.com/CVE-2025-15265/index.md","name":"CVE-2025-15265","record":{"aliases":["GHSA-6738-r8g5-qwp3"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Svelte frontend library","requires_auth":"none","summary":"Attackers can inject arbitrary JavaScript via unescaped keys in Svelte SSR hydration, leading to remote code execution and account compromise.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Fluid Attacks","cpe":[{"product":"svelte","vendor":"svelte"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"An SSR XSS exists in async hydration when attacker‑controlled keys are passed to hydratable. The key is embedded inside a \u003cscript\u003e block without HTML‑safe escaping, allowing \u003c/script\u003e to terminate the script and inject arbitrary JavaScript. This enables remote script execution in users' browsers, with potential for session theft and account compromise.\nThis issue affects Svelte: from 5.46.0 before 5.46.3.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Svelte 5.46.0 - Hydratable Key Script-Breakout XSS (SSR)","id":"CVE-2025-15265","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"xss","year":"2025"},"n_packages":2,"n_references":3,"next":{"headline":"Cross-site scripting in GeekyBot — Generate AI Content Without Prompt, Chatbot and Lead Generation","id":"CVE-2025-15266"},"packages":[{"ecosystem":"npm","fixed":["5.46.4"],"introduced":["5.46.0"],"last_affected":[],"package":"svelte","purl":null,"source":"GHSA-6738-r8g5-qwp3"},{"ecosystem":"npm","fixed":["5.46.4"],"introduced":["5.46.0"],"last_affected":[],"package":"svelte","purl":"pkg:npm/svelte","source":"GHSA-6738-r8g5-qwp3"}],"prev":{"headline":"FeehiCMS TimThumb timthumb.php server-side request forgery","id":"CVE-2025-15264"},"products":["Svelte"],"published":"2026-01-15","related":[{"cvss_score":7.8,"headline":"Code injection in n/a","id":"CVE-2021-29261","kev_date_added":null,"published":"2021-04-05"},{"cvss_score":5.9,"headline":"Svelte: ReDoS in `\u003csvelte:element\u003e` Tag Validation","id":"CVE-2026-42567","kev_date_added":null,"published":"2026-06-09"},{"cvss_score":5.4,"headline":"Potential mXSS vulnerability due to improper HTML escaping in svelte","id":"CVE-2024-45047","kev_date_added":null,"published":"2024-08-30"},{"cvss_score":5.4,"headline":"Cross-site Scripting (XSS)","id":"CVE-2022-25875","kev_date_added":null,"published":"2022-07-12"},{"cvss_score":5.3,"headline":"Svelte: XSS via DOM Clobbering of Internal Framework State","id":"CVE-2026-42573","kev_date_added":null,"published":"2026-06-09"},{"cvss_score":5.3,"headline":"Svelte vulnerable to XSS during SSR with contenteditable `bind:innerText` and `bind:textContent`","id":"CVE-2026-27901","kev_date_added":null,"published":"2026-02-26"},{"cvss_score":5.3,"headline":"Svelte Vulnerable to XSS via HTML Comment Injection in SSR Error Boundary Hydration Markers","id":"CVE-2026-27902","kev_date_added":null,"published":"2026-02-26"}],"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":"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":"partial"},"state":"PUBLISHED","updated":"2026-01-15","vendors":["Svelte"]},"summary":"Attackers can inject arbitrary JavaScript via unescaped keys in Svelte SSR hydration, leading to remote code execution and account compromise.","url":"https://insights.sbomify.com/CVE-2025-15265/"}