{"id":"CVE-2026-81343","kind":"vulnerability","aliases":["CVE-2026-81343"],"related":[],"title":"ACF Frontend Admin WordPress plugin lets visitors overwrite site-wide options","description":"The ACF Frontend Admin by DynamiApps WordPress plugin through 3.29.13 does not perform a capability check on one of its form-submission actions before writing submitted values into the site's global ACF options store, allowing unauthenticated visitors to overwrite site-wide option values via a public form.","summary":"The ACF Frontend Admin plugin for WordPress, through version 3.29.13, skips a capability check on one of its form-submission actions. An unauthenticated visitor can use a public form to overwrite site-wide ACF option values.","severity":"medium","cvss":5.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["acf","frontend-forms","package","wordpress","wp-plugin"],"not_affected_if":["no-public-form","plugin-not-installed","plugin-updated"],"how_to_check":"- Check the installed version of the ACF Frontend Admin by DynamiApps plugin in the WordPress admin plugin list; versions through `3.29.13` are affected.\n- unknown whether the sources list a specific fixed version or a vendor patch.","fix":"- Update ACF Frontend Admin by DynamiApps to a version newer than `3.29.13`.\n- unknown which exact version contains the fix; the sources do not say.","status":"open","published_at":"2026-10-17T06:16:33+00:00","first_seen_at":"2026-10-23T21:57:14+00:00","triaged_at":"2026-10-25T04:26:55+00:00","updated_at":"2026-10-25T04:26:55+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-10-25T04:26:55Z","model":"claude-haiku-5-5","output":{"fix":"- Update ACF Frontend Admin by DynamiApps to a version newer than `3.29.13`.\n- unknown which exact version contains the fix; the sources do not say.","reach":"internet","title":"ACF Frontend Admin WordPress plugin lets visitors overwrite site-wide options","impact":"medium","summary":"The ACF Frontend Admin plugin for WordPress, through version 3.29.13, skips a capability check on one of its form-submission actions. An unauthenticated visitor can use a public form to overwrite site-wide ACF option values.","category":"package","nicknames":[],"who_cares":["wordpress","wp-plugin","acf","frontend-forms"],"confidence":0.6,"needs_auth":"no","worst_case":"Visitors overwrite site-wide option values through a public form","analyst_note":"Confirm the fixed version and whether the flawed action needs a specific form configuration; check the plugin changelog or the NVD entry at https://nvd.nist.gov/vuln/detail/CVE-2026-81343.","how_to_check":"- Check the installed version of the ACF Frontend Admin by DynamiApps plugin in the WordPress admin plugin list; versions through `3.29.13` are affected.\n- unknown whether the sources list a specific fixed version or a vendor patch.","needs_analyst":true,"not_affected_if":["plugin-not-installed","plugin-updated","no-public-form"],"who_is_affected":"Sites running the ACF Frontend Admin plugin through 3.29.13 that expose a frontend form which writes to ACF options. Sites without this plugin or without a public form that submits to ACF options are not affected by this description.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000638,"input_tokens":3322,"output_tokens":611,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':14A,17A '-81343':15A,18A '3.29.13':37B,75C 'acf':1A,19B,29B,63B,67C,99C 'action':49B,89C 'admin':3A,31B,69C 'allow':102C 'capabl':40B,80C 'check':41B,81C 'cve':13A,16A 'dynamiapp':71C 'form':22B,47B,57B,87C,115C 'form-submiss':46B,86C 'frontend':2A,21B,30B,68C 'frontend-form':20B 'global':98C 'let':6A 'one':43B,83C 'option':12A,64B,100C,110C 'overwrit':8A,59B,106C 'packag':23B 'perform':78C 'plugin':5A,27B,32B,73C 'public':56B,114C 'site':10A,61B,96C,108C 'site-wid':9A,60B,107C 'skip':38B 'store':101C 'submiss':48B,88C 'submit':92C 'unauthent':51B,103C 'use':54B 'valu':65B,93C,111C 'version':36B 'via':112C 'visitor':7A,52B,104C 'wide':11A,62B,109C 'wordpress':4A,24B,34B,72C 'wp':26B 'wp-plugin':25B 'write':91C","nicknames":[],"mitigations":[],"who_affected":"Sites running the ACF Frontend Admin plugin through 3.29.13 that expose a frontend form which writes to ACF options. Sites without this plugin or without a public form that submits to ACF options are not affected by this description.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-17T06:16:33+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","cvss_by":"134c704f-9b21-4f2e-91b3-4a467353bcc0","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-81343","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81343","severity":null,"published_at":"2026-10-17T06:16:33+00:00","modified_at":"2026-10-19T21:04:50+00:00","first_seen_at":"2026-10-23T21:57:14+00:00","fetched_at":"2026-10-23T22:28:55+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}