{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-77353 exists.","fix":"No fix has been published for CVE-2026-77353 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-77353 is a medium-severity vulnerability in ellite Wallos, published on 31 Aug 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-2026-77353 and fix it if it is affected.\n\nWhat it is: CVE-2026-77353 is a medium-severity vulnerability in ellite Wallos, published on 31 Aug 2026. Any signed-in user can exploit it over the network, 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-2026-77353 exists.\n\nAffected product: ellite Wallos. 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-2026-77353/ (Markdown: https://insights.sbomify.com/CVE-2026-77353/index.md)","id":"CVE-2026-77353","markdown":"https://insights.sbomify.com/CVE-2026-77353/index.md","name":"CVE-2026-77353","record":{"aliases":["GHSA-q2r8-m9wm-5547"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_modify","other"],"network_reachable":"yes","non_default_config":false,"product_category":"Subscription tracker","requires_auth":"low_privilege","summary":"Authenticated users can inject malicious iCalendar events via CRLF in subscription names, affecting all subscribers to the feed.","user_interaction":"required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":4.6,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"},{"id":"CWE-116","name":"Improper Encoding or Escaping of Output"}],"description":"Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 5.0.0, Wallos allows authenticated users to inject arbitrary iCalendar properties and events into their exported .ics feed by embedding raw CRLF sequences in subscription names or notes. Because the input validation layer only encodes HTML metacharacters but never strips newlines, and the export layer decodes those entities back before writing iCal output, an attacker with any valid account can craft a subscription whose name breaks out of the current VEVENT block and inserts fully attacker-controlled calendar events — including spoofed organizers, arbitrary email addresses in ATTENDEE properties, and misleading event content — into any calendar application subscribed to that feed. This issue has been patched in version 5.0.0.","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":"Wallos: iCalendar Injection via CRLF in Subscription Name/Notes Export","id":"CVE-2026-77353","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"kin-openapi: Uncontrolled resource consumption in openapi3filter deepObject query parameter decoding","id":"CVE-2026-77354"},"packages":[],"prev":{"headline":"Wallos: Authenticated SSRF via per-user SMTP notification host (low-privilege user)","id":"CVE-2026-77352"},"products":["Wallos"],"published":"2026-08-31","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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-03","vendors":["ellite"]},"summary":"Authenticated users can inject malicious iCalendar events via CRLF in subscription names, affecting all subscribers to the feed.","url":"https://insights.sbomify.com/CVE-2026-77353/"}