{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-77871 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-77871 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-77871 is a medium-severity vulnerability in saadiqbal Post Snippets – Custom WordPress Code Snippets Customizer, published on 28 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-77871 and fix it if it is affected.\n\nWhat it is: CVE-2026-77871 is a medium-severity vulnerability in saadiqbal Post Snippets – Custom WordPress Code Snippets Customizer, published on 28 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-77871 in the wild and no public exploit code.\n\nAffected product: saadiqbal Post Snippets – Custom WordPress Code Snippets Customizer. 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-2026-77871/ (Markdown: https://insights.sbomify.com/CVE-2026-77871/index.md)","id":"CVE-2026-77871","markdown":"https://insights.sbomify.com/CVE-2026-77871/index.md","name":"CVE-2026-77871","record":{"aliases":["GHSA-6hh4-5cgj-w743"],"analysis":null,"analysis_generated_by":null,"assigner":"Wordfence","cpe":[],"cvss":{"score":6.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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":"The Post Snippets – Custom WordPress Code Snippets Customizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Shortcode Attributes in all versions up to, and including, 4.2.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Entity-encoded payloads such as \u0026lt;script\u0026gt;...\u0026lt;/script\u0026gt; survive WordPress's wp_kses_post on-save sanitization because kses does not decode HTML entities, and are only converted back into executable HTML tags at render time by the plugin's own shortcode filter. This requires snippet shortcodes to be enabled.","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":"Post Snippets \u003c= 4.2.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes","id":"CVE-2026-77871","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":10,"next":{"headline":"IBM Enterprise Build of Quarkus is affected by multiple vulnerabilities","id":"CVE-2026-77874"},"packages":[],"prev":{"headline":"SSRF protection bypass in safeurl via IPv6 addresses and unresolvable hosts","id":"CVE-2026-77866"},"products":["Post Snippets – Custom WordPress Code Snippets Customizer"],"published":"2026-10-28","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":"2026-10-29","vendors":["saadiqbal"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-77871/"}