{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-112183 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-112183 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-112183 is a medium-severity cross-site scripting vulnerability in MISP, published on 19 Oct 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-2026-112183 and fix it if it is affected.\n\nWhat it is: CVE-2026-112183 is a medium-severity cross-site scripting vulnerability in MISP, published on 19 Oct 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-2026-112183 in the wild and no public exploit code.\n\nAffected product: MISP. 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-2026-112183/ (Markdown: https://insights.sbomify.com/CVE-2026-112183/index.md)","id":"CVE-2026-112183","markdown":"https://insights.sbomify.com/CVE-2026-112183/index.md","name":"CVE-2026-112183","record":{"aliases":["GHSA-jj77-qm54-jjwq"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"MISP threat sharing","requires_auth":"low_privilege","summary":"Attackers can inject CSS via remote tags in MISP event previews, enabling UI spoofing or data leakage when users view linked events.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CIRCL","cpe":[],"cvss":{"score":4.8,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"}],"description":"MISP contains a CSS injection vulnerability in the remote event preview feature. When a user previews an event from a linked MISP server, the colour value associated with each remote tag is written directly into an inline CSS style attribute without sufficient validation. Although HTML entity encoding is applied, the value is interpreted as CSS within the style attribute, allowing a malicious or compromised linked server to inject arbitrary CSS declarations.\n\nAn attacker with the ability to create or modify tags on a linked MISP instance can craft a tag colour value containing CSS injection payloads. When a user on the local instance views the event preview, the injected CSS is rendered, potentially allowing UI manipulation, visual spoofing, or limited information disclosure through CSS-based techniques.\n\nPreconditions:\n\n- A linked MISP server relationship exists between the victim instance and the attacker-controlled instance.\n\n- The attacker can create or modify tags on the linked server.\n\n- A victim user views the remote event preview page.\n\nAffected: \u003c2.5.48.","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":"MISP CSS Injection via Remote Tag Colour in Event Preview","id":"CVE-2026-112183","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"MISP Workflow Module: Reflected XSS via Unescaped misp-modules Parameter Names in Form Labels","id":"CVE-2026-112184"},"packages":[],"prev":{"headline":"MISP Incomplete Event Deletion Leaves Orphaned Sensitive Records","id":"CVE-2026-112180"},"products":["MISP"],"published":"2026-10-19","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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-19","vendors":["MISP"]},"summary":"Attackers can inject CSS via remote tags in MISP event previews, enabling UI spoofing or data leakage when users view linked events.","url":"https://insights.sbomify.com/CVE-2026-112183/"}