{"id":"CVE-2026-127084","kind":"vulnerability","aliases":["CVE-2026-127084"],"related":[],"title":"Teable: stored XSS via uploaded SVG or HTML attachments","description":"Teable before 2026-10-12T12-45-53Z.3331 contains a stored cross-site scripting vulnerability that allows authenticated users to upload SVG or HTML attachments with an attacker-chosen content type. Attackers can send the same-origin /api/attachments/read URL, served inline with an empty Content-Security-Policy, to run script with the victim's session and perform API actions.","summary":"Teable lets logged-in users upload SVG or HTML attachments with an attacker-chosen content type, and the attachment URL is served inline with no Content-Security-Policy. An attacker can make a victim open that same-origin link so script runs with the victim's session and performs API actions as them.","severity":"high","cvss":8.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["package","self-hosted","teable","web-apps"],"not_affected_if":["fixed-version","no-attachment-uploads"],"how_to_check":"- Check the Teable version in the deployment, for example `teable` image tag or package version, and compare it to the fixed build.\n- Look for uploads served from `/api/attachments/read` with an SVG or HTML content type.","fix":"- Teable: move to a build at or after `2026-10-12T12-45-53Z.3331`","status":"open","published_at":"2026-11-13T10:18:04+00:00","first_seen_at":"2026-11-13T10:47:29+00:00","triaged_at":"2026-11-13T10:50:55+00:00","updated_at":"2026-11-13T10:50:55+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-11-13T10:50:55Z","model":"claude-haiku-5-5","output":{"fix":"- Teable: move to a build at or after `2026-10-12T12-45-53Z.3331`","reach":"internet","title":"Teable: stored XSS via uploaded SVG or HTML attachments","impact":"high","summary":"Teable lets logged-in users upload SVG or HTML attachments with an attacker-chosen content type, and the attachment URL is served inline with no Content-Security-Policy. An attacker can make a victim open that same-origin link so script runs with the victim's session and performs API actions as them.","audience":"businesses","category":"package","nicknames":[],"who_cares":["teable","self-hosted","web-apps"],"confidence":0.7,"fix_status":"available","needs_auth":"yes","worst_case":"attacker runs script as victim and performs API actions","analyst_note":"Confirm the affected version range and the exact fixed build from the GitHub patch and release notes; the NVD entry gives no product ranges.","how_to_check":"- Check the Teable version in the deployment, for example `teable` image tag or package version, and compare it to the fixed build.\n- Look for uploads served from `/api/attachments/read` with an SVG or HTML content type.","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["fixed-version","no-attachment-uploads"],"who_is_affected":"Self-hosted or managed Teable instances that allow authenticated users to upload attachments. The attack needs a logged-in account and a victim who opens the crafted link; instances on a build at or after the fixed version are not affected.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000752,"input_tokens":4653,"output_tokens":573,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-10':82C '-12':83C '-127084':12A,15A '-2026':11A,14A '-45':85C '-53':86C '/api/attachments/read':120C '2026':81C 'action':78B,142C 'allow':97C 'api':77B,141C 'app':23B 'attach':9A,34B,44B,105C 'attack':38B,56B,109C,113C 'attacker-chosen':37B,108C 'authent':98C 'chosen':39B,110C 'contain':88C 'content':40B,52B,111C,128C 'content-security-polici':51B,127C 'cross':92C 'cross-sit':91C 'cve':10A,13A 'empti':126C 'host':19B 'html':8A,33B,104C 'inlin':48B,123C 'let':25B 'link':66B 'log':27B 'logged-in':26B 'make':58B 'open':61B 'origin':65B,119C 'packag':16B 'perform':76B,140C 'polici':54B,130C 'run':69B,132C 'same-origin':63B,117C 'script':68B,94C,133C 'secur':53B,129C 'self':18B 'self-host':17B 'send':115C 'serv':47B,122C 'session':74B,138C 'site':93C 'store':2A,90C 'svg':6A,31B,102C 't12':84C 'teabl':1A,20B,24B,79C 'type':41B,112C 'upload':5A,30B,101C 'url':45B,121C 'user':29B,99C 'via':4A 'victim':60B,72B,136C 'vulner':95C 'web':22B 'web-app':21B 'xss':3A 'z.3331':87C","nicknames":[],"mitigations":[],"who_affected":"Self-hosted or managed Teable instances that allow authenticated users to upload attachments. The attack needs a logged-in account and a victim who opens the crafted link; instances on a build at or after the fixed version are not affected.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","package","selfhosted","teable","webapps"],"campaign_type":null,"search_a":"'-127084':12A,15A '-2026':11A,14A 'attach':9A 'cve':10A,13A 'html':8A 'store':2A 'svg':6A 'teabl':1A 'upload':5A 'via':4A 'xss':3A","search_b":"'action':78B 'api':77B 'app':23B 'attach':34B,44B 'attack':38B,56B 'attacker-chosen':37B 'chosen':39B 'content':40B,52B 'content-security-polici':51B 'host':19B 'html':33B 'inlin':48B 'let':25B 'link':66B 'log':27B 'logged-in':26B 'make':58B 'open':61B 'origin':65B 'packag':16B 'perform':76B 'polici':54B 'run':69B 'same-origin':63B 'script':68B 'secur':53B 'self':18B 'self-host':17B 'serv':47B 'session':74B 'svg':31B 'teabl':20B,24B 'type':41B 'upload':30B 'url':45B 'user':29B 'victim':60B,72B 'web':22B 'web-app':21B","search_c":"'-10':82C '-12':83C '-45':85C '-53':86C '/api/attachments/read':120C '2026':81C 'action':142C 'allow':97C 'api':141C 'attach':105C 'attack':109C,113C 'attacker-chosen':108C 'authent':98C 'chosen':110C 'contain':88C 'content':111C,128C 'content-security-polici':127C 'cross':92C 'cross-sit':91C 'empti':126C 'html':104C 'inlin':123C 'origin':119C 'perform':140C 'polici':130C 'run':132C 'same-origin':117C 'script':94C,133C 'secur':129C 'send':115C 'serv':122C 'session':138C 'site':93C 'store':90C 'svg':102C 't12':84C 'teabl':79C 'type':112C 'upload':101C 'url':121C 'user':99C 'victim':136C 'vulner':95C 'z.3331':87C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-10-13T07:39:17+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-127084","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-127084","severity":null,"published_at":"2026-11-13T10:18:04+00:00","modified_at":"2026-11-13T10:18:04+00:00","first_seen_at":"2026-11-13T10:47:29+00:00","fetched_at":"2026-11-13T10:47:29+00:00","note":null}],"documents":[{"id":44044,"url":"https://github.com/teableio/teable/commit/3c1c4646bfddfb14b1f2fbab8d0e1189969fa304","title":"Patch: github.com","kind":"other","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Patch: github.com"},{"id":44045,"url":"https://github.com/teableio/teable/releases/tag/release.2026-10-12T12-45-53Z.3331","title":"Release notes: github.com","kind":"release","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Release notes: github.com"},{"id":145296,"url":"https://github.com/teableio/teable/security/advisories/GHSA-2fm5-fcfx-hq5f","title":"Vendor advisory: github.com","kind":"vendor","source":"nvd","publisher":"vendor","text":null,"published_at":"2026-10-13T07:39:17+00:00","relation":"advisory","confidence":null,"note":"Vendor advisory: github.com"},{"id":145297,"url":"https://www.vulncheck.com/advisories/teable-before-2026-10-12t12-45-53z-3331-stored-xss-via-attachment-uploads","title":"Third-party advisory: www.vulncheck.com","kind":"advisory","source":"nvd","publisher":"research","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":"Third-party advisory: www.vulncheck.com"}],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}