{"answers":{"affected":"2 open source packages ship an affected version, including silverstripe/versioned.","exploited":"There is no known exploitation of CVE-2026-55779 in the wild and no public exploit code.","fix":"Upgrade silverstripe/versioned to 3.2.1 or later.","what":"CVE-2026-55779 is a medium-severity cross-site scripting vulnerability in silverstripe-versioned, published on 28 Aug 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-2026-55779 and fix it if it is affected.\n\nWhat it is: CVE-2026-55779 is a medium-severity cross-site scripting vulnerability in silverstripe-versioned, published on 28 Aug 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-2026-55779 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- silverstripe/versioned (Packagist): affected all versions; fixed in 3.2.1\n- silverstripe/versioned (Packagist): affected all versions; fixed in 3.2.1\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-2026-55779/ (Markdown: https://insights.sbomify.com/CVE-2026-55779/index.md)","id":"CVE-2026-55779","markdown":"https://insights.sbomify.com/CVE-2026-55779/index.md","name":"CVE-2026-55779","record":{"aliases":["GHSA-m4g4-86qc-v8w7"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["code_execution","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Silverstripe Versioned","requires_auth":"none","summary":"An attacker can execute stored JavaScript in an administrator's browser by restoring an archived page with a crafted title, compromising the CMS session.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":5.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Silverstripe Versioned provides versioning for Silverstripe models. Prior to 3.2.1, RestoreAction::getRestoreMessage() in src/RestoreAction.php builds ArchiveAdmin restore notifications rendered as CAST_HTML and inserts $restoredItem-\u003eTitle, $restoredItem-\u003eURLSegment, $restoredItem-\u003eCMSEditLink(), and $changedProperty['value'] without applying Convert::raw2xml(). When an administrator restores an archived page containing a crafted title or URL segment, the generated restoration message can execute stored JavaScript in the administrator's browser, compromising the confidentiality and integrity of the CMS session. This issue is fixed in version 3.2.1.","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":"Silverstripe Versioned: XSS in archive admin restore","id":"CVE-2026-55779","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":2,"n_references":5,"next":{"headline":"NanaZip: Uncaught exception / unbounded allocation in NanaZip .NET single-file Extract() via unvalidated entry Size","id":"CVE-2026-55780"},"packages":[{"ecosystem":"Packagist","fixed":["3.2.1"],"introduced":["0"],"last_affected":[],"package":"silverstripe/versioned","purl":null,"source":"GHSA-m4g4-86qc-v8w7"},{"ecosystem":"Packagist","fixed":["3.2.1"],"introduced":["0"],"last_affected":[],"package":"silverstripe/versioned","purl":"pkg:composer/silverstripe/versioned","source":"GHSA-m4g4-86qc-v8w7"}],"prev":{"headline":"Parse Server: Stored XSS via non-standard file extension bypassing file upload extension blocklist","id":"CVE-2026-55778"},"products":["silverstripe-versioned"],"published":"2026-08-28","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":"2026-08-31","vendors":["silverstripe"]},"summary":"An attacker can execute stored JavaScript in an administrator's browser by restoring an archived page with a crafted title, compromising the CMS session.","url":"https://insights.sbomify.com/CVE-2026-55779/"}