{"id":"CVE-2024-42009","kind":"vulnerability","aliases":["CVE-2024-42009"],"related":[],"title":"roundcube webmail: A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to…","description":"RoundCube Webmail contains a cross-site scripting vulnerability. This vulnerability could allow a remote attacker to steal and send emails of a victim via a crafted e-mail message that abuses a Desanitization issue in message_body() in program/actions/mail/show.php.\n\nCISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","summary":"Roundcube Webmail has a cross-site scripting flaw in how it renders email message bodies. A crafted email can run script in the victim's session, letting an attacker read and send mail as that user.","severity":"critical","cvss":9.3,"epss":null,"exploited":true,"exploited_at":"2025-06-09T00:00:00+00:00","products":[{"name":"roundcube webmail","fixed":["1.5.8"],"affected":"< 1.5.8","ecosystem":"vendor"},{"name":"roundcube webmail","fixed":["1.6.8"],"affected":">= 1.6.0, < 1.6.8","ecosystem":"vendor"},{"name":"Roundcube Webmail","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","package","roundcube","self-hosted","webmail"],"not_affected_if":["no-roundcube-deployment"],"how_to_check":null,"fix":"Upgrade Roundcube Webmail to a release that includes the fix for CVE-2024-42009; the fixed version is not stated in the sources.\nCISA says to apply vendor mitigations or discontinue use if none are available.","status":"open","published_at":"2024-08-05T19:15:38+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T20:46:58+00:00","updated_at":"2026-10-24T00:09:50+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-10-23T20:46:58Z","model":"claude-haiku-5-5","output":{"fix":"Upgrade Roundcube Webmail to a release that includes the fix for CVE-2024-42009; the fixed version is not stated in the sources.\nCISA says to apply vendor mitigations or discontinue use if none are available.","reach":"internet","summary":"Roundcube Webmail has a cross-site scripting flaw in how it renders email message bodies. A crafted email can run script in the victim's session, letting an attacker read and send mail as that user.","category":"package","who_cares":["roundcube","self-hosted","webmail"],"confidence":0.7,"needs_auth":"no","worst_case":"Attacker runs script in victim's webmail session, reads and sends their email","analyst_note":"Find the fixed Roundcube version and vendor advisory; sources give no affected or fixed versions, and CISA KEV lists it as exploited.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["no-roundcube-deployment"],"user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000441,"input_tokens":2573,"output_tokens":367,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-01':131C '-2024':23A,26A '-42009':24A,27A '1.5.7':12A '1.6':14A '1.6.7':17A '22':130C 'abus':110C 'action':121C 'allow':18A,90C 'appli':122C 'applic':128C 'attack':21A,70B,93C 'bod':129C 'bodi':56B,116C 'cisa':119C 'cloud':134C 'contain':80C 'could':89C 'craft':58B,104C 'cross':5A,46B,83C 'cross-sit':4A,45B,82C 'cve':22A,25A 'desanit':112C 'discontinu':137C 'e':106C 'e-mail':105C 'email':54B,59B,98C 'exploit':34B 'flaw':49B 'follow':127C 'guidanc':132C 'host':39B 'instruct':126C 'issu':113C 'let':68B 'mail':74B,107C 'messag':55B,108C,115C 'mitig':123C,143C 'packag':35B 'per':124C 'product':141C 'program/actions/mail/show.php':118C 'read':71B 'remot':20A,92C 'render':53B 'requir':120C 'roundcub':1A,10A,36B,41B,78C 'roundcube':28A,30A,32A 'run':61B 'script':7A,48B,62B,85C 'self':38B 'self-host':37B 'send':73B,97C 'servic':135C 'session':67B 'site':6A,47B,84C 'steal':95C 'unavail':145C 'use':138C 'user':77B 'vendor':125C 'via':102C 'victim':65B,101C 'vulner':8A,86C,88C 'webmail':2A,29A,31A,33A,40B,42B,79C 'x':15A","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2024-08-05T19:15:38+00:00","kev":{"dateAdded":"2025-06-09","dueDate":"2025-06-30","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2024-42009","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2024-42009","severity":null,"published_at":"2025-06-09T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T17:39:55+00:00","note":null},{"source":"nvd","external_id":"CVE-2024-42009","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-42009","severity":null,"published_at":"2024-08-05T19:15:38+00:00","modified_at":"2026-06-17T07:48:37+00:00","first_seen_at":"2026-10-23T22:29:05+00:00","fetched_at":"2026-10-23T22:29:05+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"}