{"answers":{"affected":"2 open source packages ship an affected version, including mediawiki/semantic-media-wiki.","exploited":"There is no known exploitation of CVE-2026-77616 in the wild and no public exploit code.","fix":"Upgrade mediawiki/semantic-media-wiki to 7.2.0 or later.","what":"CVE-2026-77616 is a medium-severity cross-site scripting vulnerability in SemanticMediaWiki, published on 18 Sep 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-2026-77616 and fix it if it is affected.\n\nWhat it is: CVE-2026-77616 is a medium-severity cross-site scripting vulnerability in SemanticMediaWiki, published on 18 Sep 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: There is no known exploitation of CVE-2026-77616 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- mediawiki/semantic-media-wiki (Packagist): affected from 7.0.0; fixed in 7.2.0\n- mediawiki/semantic-media-wiki (Packagist): affected from 7.0.0; fixed in 7.2.0\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-2026-77616/ (Markdown: https://insights.sbomify.com/CVE-2026-77616/index.md)","id":"CVE-2026-77616","markdown":"https://insights.sbomify.com/CVE-2026-77616/index.md","name":"CVE-2026-77616","record":{"aliases":["GHSA-cx86-7xwp-w9wf"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"MediaWiki extension","requires_auth":"none","summary":"Reflected XSS in Semantic MediaWiki allows attackers to execute arbitrary scripts in victims' browsers via a crafted cursor token in Special:Ask.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":6.1,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Semantic MediaWiki is a free, open-source extension to MediaWiki that lets users store and query data within the wiki's pages. In versions 7.0.0 through 7.1.0, `Special:Ask` accepts a `cursor` query parameter for keyset pagination (added in 7.0.0). The token is decoded by `CursorEncoder`, which is an **unsigned** base64url-encoded JSON blob, so its contents are fully attacker-controlled. When the cursor's sort anchor does not match the request's `sort=` / `order=`, `QueryCreator::applyCursorIfRequested()` builds an error message by interpolating the attacker-controlled `sort_prop` / `sort_order` values into a raw string via `Query::addErrors()`. Unlike SMW's message-key errors, this raw string bypasses the message layer's sanitization (`ProcessingErrorMsgHandler::normalizeAndDecodeMessages()` passes a non-key, non-encoded string through unchanged). `ErrorWidget::queryError()` then assembles the errors and passes them to `Html::errorBox()`, whose first argument is emitted as raw HTML. The result is a reflected cross-site scripting vulnerability: a crafted `cursor` token containing markup in `sort_prop` (or `sort_order`) executes script in the victim's browser on the wiki origin. No authentication or special permission is required. The payload is delivered via a crafted link. Version 7.2.0 contains a fix.","ecosystems":["Packagist"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Semantic MediaWiki affected by reflected XSS in `Special:Ask` via a forged cursor pagination token","id":"CVE-2026-77616","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"Vector: Unauthenticated denial of service in the `logstash` source via unbounded memory allocation.","id":"CVE-2026-77619"},"packages":[{"ecosystem":"Packagist","fixed":["7.2.0"],"introduced":["7.0.0"],"last_affected":[],"package":"mediawiki/semantic-media-wiki","purl":null,"source":"GHSA-cx86-7xwp-w9wf"},{"ecosystem":"Packagist","fixed":["7.2.0"],"introduced":["7.0.0"],"last_affected":[],"package":"mediawiki/semantic-media-wiki","purl":"pkg:composer/mediawiki/semantic-media-wiki","source":"GHSA-cx86-7xwp-w9wf"}],"prev":{"headline":"Paella Player: Stored XSS via caption cue text","id":"CVE-2026-77615"},"products":["SemanticMediaWiki"],"published":"2026-09-18","related":[],"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":"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":"2026-09-18","vendors":["SemanticMediaWiki"]},"summary":"Reflected XSS in Semantic MediaWiki allows attackers to execute arbitrary scripts in victims' browsers via a crafted cursor token in Special:Ask.","url":"https://insights.sbomify.com/CVE-2026-77616/"}