{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27458 exists.","fix":"No fix has been published for CVE-2026-27458 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-27458 is a high-severity cross-site scripting vulnerability in Kovah LinkAce, published on 21 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-27458 and fix it if it is affected.\n\nWhat it is: CVE-2026-27458 is a high-severity cross-site scripting vulnerability in Kovah LinkAce, published on 21 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27458 exists.\n\nAffected product: Kovah LinkAce. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-27458/ (Markdown: https://insights.sbomify.com/CVE-2026-27458/index.md)","id":"CVE-2026-27458","markdown":"https://insights.sbomify.com/CVE-2026-27458/index.md","name":"CVE-2026-27458","record":{"aliases":["GHSA-2r9p-95xj-p583"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"LinkAce link archive","requires_auth":"low_privilege","summary":"Authenticated users can inject JavaScript into LinkAce list descriptions via Atom feed CDATA escape, leading to arbitrary code execution in victim browsers.","user_interaction":"not_required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"linkace","vendor":"linkace"}],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-80","name":"Improper Neutralization of Script-Related HTML Tags in a Web Page"}],"description":"LinkAce is a self-hosted archive to collect website links. Versions 2.4.2 and below have a Stored Cross-site Scripting vulnerability through the Atom feed endpoint for lists (/lists/feed). An authenticated user can inject a CDATA-breaking payload into a list description that escapes the XML CDATA section, injects a native SVG element into the Atom XML document, and executes arbitrary JavaScript directly in the browser when the feed URL is visited. No RSS reader or additional rendering context is required — the browser's native XML parser processes the injected SVG and fires the onload event handler. This vulnerability exists because the lists feed template outputs list descriptions using Blade's raw syntax ({!! !!}) without sanitization inside a CDATA block. The critical detail is that because the output sits inside \u003c![CDATA[...]]\u003e, an attacker can inject the sequence ]]\u003e to close the CDATA section prematurely, then inject arbitrary XML/SVG elements that the browser parses and executes natively as part of the Atom document. This issue has been fixed in version 2.4.3.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"LinkAce: Stored XSS in Atom Feed via CDATA Escape in List Description","id":"CVE-2026-27458","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"pyOpenSSL DTLS cookie callback buffer overflow","id":"CVE-2026-27459"},"packages":[],"prev":{"headline":"Weblate: Missing access control for the AddonViewSet API exposes all addon configurations","id":"CVE-2026-27457"},"products":["LinkAce"],"published":"2026-02-21","related":[{"cvss_score":8.7,"headline":"LinkAce: Stored XSS Vulnerability in Link Title Field Through Social Media Sharing Feature","id":"CVE-2025-62722","kev_date_added":null,"published":"2025-11-04"},{"cvss_score":8.5,"headline":"LinkAce's SSRF protection can be bypassed via internal hostname resolution in LinkAce","id":"CVE-2026-33953","kev_date_added":null,"published":"2026-03-27"},{"cvss_score":8.4,"headline":"LinkAce has a Stored One Click XSS vulnerability","id":"CVE-2025-53838","kev_date_added":null,"published":"2025-09-08"},{"cvss_score":7.7,"headline":"LinkAce affected by SSRF via link creation: NoPrivateIpRule not applied to LinkStoreRequest","id":"CVE-2026-30953","kev_date_added":null,"published":"2026-03-10"},{"cvss_score":7.6,"headline":"File Upload Vulnerability Leading to XSS in LinkAce v1.15.5","id":"CVE-2024-56508","kev_date_added":null,"published":"2024-12-27"},{"cvss_score":7.3,"headline":"LinkAce Vulnerable to Stored XSS on the Audit Page","id":"CVE-2025-59424","kev_date_added":null,"published":"2025-09-18"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-02-24","vendors":["Kovah"]},"summary":"Authenticated users can inject JavaScript into LinkAce list descriptions via Atom feed CDATA escape, leading to arbitrary code execution in victim browsers.","url":"https://insights.sbomify.com/CVE-2026-27458/"}