{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-13156 exists.","fix":"No fix has been published for CVE-2026-13156 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-13156 is a medium-severity vulnerability in Unknown MailerSend, published on 20 Jul 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-2026-13156 and fix it if it is affected.\n\nWhat it is: CVE-2026-13156 is a medium-severity vulnerability in Unknown MailerSend, published on 20 Jul 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-13156 exists.\n\nAffected product: Unknown MailerSend. 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-2026-13156/ (Markdown: https://insights.sbomify.com/CVE-2026-13156/index.md)","id":"CVE-2026-13156","markdown":"https://insights.sbomify.com/CVE-2026-13156/index.md","name":"CVE-2026-13156","record":{"aliases":["GHSA-h2v3-9w9f-v798"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["data_modify","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"WordPress plugin","requires_auth":"none","summary":"An attacker can trick an administrator into deleting SMTP settings and deactivating the plugin, disrupting email delivery.","user_interaction":"required","vuln_class":"csrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"WPScan","cpe":[],"cvss":{"score":5.4,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-352","name":"Cross-Site Request Forgery"}],"description":"The MailerSend  WordPress plugin before 1.0.8 does not perform a nonce check on its configuration-delete action (it verifies the manage_options capability but ignores the nonce), so an attacker can trick a logged-in administrator into visiting a crafted page that wipes the MailerSend  WordPress plugin before 1.0.8's SMTP configuration and deactivates the MailerSend  WordPress plugin before 1.0.8, breaking the site's email delivery.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-07-21","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-07-21T01:46:42Z","kind":"github_poc","ref":"https://github.com/MinhHK68/CVE-2026-13156","stars":0,"title":"CVE-2026-13156 Vulnerability Advisory \u0026 PoC — Discovered by Huynh Kien Minh (MinhHK)."}],"tier":"weaponised"},"has_fix":null,"headline":"MailerSend - Official SMTP Integration \u003c 1.0.8 - Settings Deletion and Plugin Deactivation via CSRF","id":"CVE-2026-13156","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"csrf","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Theme Demo Import \u003c= 1.1.3 - Admin+ Arbitrary File Upload","id":"CVE-2026-13157"},"packages":[],"prev":{"headline":"Essential Blocks \u003c 6.4.0 - Unauthenticated Non-Public Custom Post Type Content Disclosure via queries Endpoint","id":"CVE-2026-13154"},"products":["MailerSend"],"published":"2026-07-20","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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-20","vendors":["Unknown"]},"summary":"An attacker can trick an administrator into deleting SMTP settings and deactivating the plugin, disrupting email delivery.","url":"https://insights.sbomify.com/CVE-2026-13156/"}