{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-126498 in the wild and no public exploit code.","exposure":"An affected version is exposed as installed. No special setting or call is needed.","fix":"No fix has been published for CVE-2026-126498 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-126498 is a medium-severity cross-site scripting vulnerability in Musing Studio WriteFreely, published on 11 Nov 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-126498 and fix it if it is affected.\n\nWhat it is: CVE-2026-126498 is a medium-severity cross-site scripting vulnerability in Musing Studio WriteFreely, published on 11 Nov 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-126498 in the wild and no public exploit code.\nExposure: An affected version is exposed as installed. No special setting or call is needed.\n\nAffected product: Musing Studio WriteFreely. 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-2026-126498/ (Markdown: https://insights.sbomify.com/CVE-2026-126498/index.md)","id":"CVE-2026-126498","markdown":"https://insights.sbomify.com/CVE-2026-126498/index.md","name":"CVE-2026-126498","record":{"aliases":["GHSA-43p2-x762-x6h7","GHSA-cwxm-8ch5-j2vh"],"analysis":{"component_type":"web_application","exploitable_when_present":false,"fix_type":"upgrade","impacts":["other"],"network_reachable":"yes","non_default_config":false,"product_category":"blogging platform","requires_auth":"low_privilege","requires_specific_call":false,"summary":"Authenticated authors can store script in a post slug that runs for RSS, newsletter and ActivityPub readers; WriteFreely operators should care.","user_interaction":"required","vuln_class":"xss","vulnerable_functions":["augmentReadingDestination()"]},"analysis_generated_by":"sbomify/insights-2b-fp8","assigner":"VulnCheck","cpe":[],"cvss":{"score":5.1,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/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":"WriteFreely before 0.17.3 contains a stored cross-site scripting vulnerability that allows authenticated authors to inject HTML by supplying a malicious post slug via the CreatePost API. The raw slug is concatenated into an anchor by augmentReadingDestination() for paid-shortcode posts, executing script for RSS/Atom feed readers, newsletter recipients and ActivityPub viewers.","ecosystems":[],"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":"WriteFreely before 0.17.3 Stored XSS via Unsanitized Post Slug","id":"CVE-2026-126498","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":6,"next":{"headline":"Jellyfin before 12.0 Path Traversal via Library VirtualFolders Endpoints","id":"CVE-2026-126499"},"nickname":null,"packages":[],"prev":{"headline":"LibreCAD through 2.2.1.6 Heap Out-of-Bounds Write via dwgReader18::parseDataPage","id":"CVE-2026-126497"},"products":["WriteFreely"],"published":"2026-11-11","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-11-11","vendors":["Musing Studio"]},"summary":"Authenticated authors can store script in a post slug that runs for RSS, newsletter and ActivityPub readers; WriteFreely operators should care.","url":"https://insights.sbomify.com/CVE-2026-126498/"}