{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-26951 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2025-26951 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-26951 is a medium-severity cross-site scripting vulnerability in covertnine C9 Blocks, published on 15 Apr 2025. 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-2025-26951 and fix it if it is affected.\n\nWhat it is: CVE-2025-26951 is a medium-severity cross-site scripting vulnerability in covertnine C9 Blocks, published on 15 Apr 2025. 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-2025-26951 in the wild and no public exploit code.\n\nAffected product: covertnine C9 Blocks. 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-2025-26951/ (Markdown: https://insights.sbomify.com/CVE-2025-26951/index.md)","id":"CVE-2025-26951","markdown":"https://insights.sbomify.com/CVE-2025-26951/index.md","name":"CVE-2025-26951","record":{"aliases":["GHSA-99gc-fxf4-398x"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"WordPress plugin","requires_auth":"low_privilege","summary":"An attacker can execute arbitrary scripts in the context of other users via DOM-based XSS in the C9 Blocks WordPress plugin.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Patchstack","cpe":[],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in covertnine C9 Blocks c9-blocks allows DOM-Based XSS.This issue affects C9 Blocks: from n/a through \u003c= 1.7.7.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"WordPress C9 Blocks plugin \u003c= 1.7.7 - Cross Site Scripting (XSS) vulnerability","id":"CVE-2025-26951","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2025"},"n_packages":0,"n_references":1,"next":{"headline":"WordPress Business Card Block plugin \u003c= 1.0.5 - Cross Site Scripting (XSS) vulnerability","id":"CVE-2025-26952"},"packages":[],"prev":{"headline":"WordPress Nepali Date Converter plugin \u003c= 2.0.8 - Cross Site Scripting (XSS) vulnerability","id":"CVE-2025-26950"},"products":["C9 Blocks"],"published":"2025-04-15","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":"2026-04-28","vendors":["covertnine"]},"summary":"An attacker can execute arbitrary scripts in the context of other users via DOM-based XSS in the C9 Blocks WordPress plugin.","url":"https://insights.sbomify.com/CVE-2025-26951/"}