{"id":"CVE-2026-120190","kind":"vulnerability","aliases":["CVE-2026-120190"],"related":[],"title":"PostyBirb Plus: submission description editor lets a remote attacker run scripts","description":"A security flaw has been discovered in PostyBirb Plus up to 3.1.75. Affected by this vulnerability is an unknown functionality of the file ui/src/views/submissions/submission-forms/form-components/DescriptionInput.tsx of the component Submission Description Editor. The manipulation results in cross site scripting. The attack may be performed from remote. The exploit has been released to the public and may be used for attacks. Upgrading to version 3.1.76 addresses this issue. The patch is identified as 6b11c2345ad98ae59fd5404a9f1024eb1d10c8a4. It is advisable to upgrade the affected component.","summary":"PostyBirb Plus, a tool for posting art and submissions to websites, has a cross-site scripting flaw in its submission description editor. A remote attacker can have script run in the browser of a user who opens the crafted content.","severity":"medium","cvss":4.0,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["desktop-app","package","postybirb-plus"],"not_affected_if":["version-3.1.76-or-later"],"how_to_check":"- Check the installed PostyBirb Plus version; affected versions are up to `3.1.75`.\n- Look for the file `ui/src/views/submissions/submission-forms/form-components/DescriptionInput.tsx` in the installed source.","fix":"- Upgrade PostyBirb Plus to `3.1.76`.","status":"open","published_at":"2026-11-01T01:17:17+00:00","first_seen_at":"2026-11-01T01:47:20+00:00","triaged_at":"2026-11-01T01:47:46+00:00","updated_at":"2026-11-01T01:47:46+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-11-01T01:47:46Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade PostyBirb Plus to `3.1.76`.","reach":"network","title":"PostyBirb Plus: submission description editor lets a remote attacker run scripts","impact":"medium","summary":"PostyBirb Plus, a tool for posting art and submissions to websites, has a cross-site scripting flaw in its submission description editor. A remote attacker can have script run in the browser of a user who opens the crafted content.","audience":"developers","category":"package","nicknames":[],"who_cares":["postybirb-plus","desktop-app"],"confidence":0.6,"fix_status":"available","needs_auth":"unknown","worst_case":"Script runs in a user's browser session within the app","analyst_note":"","how_to_check":"- Check the installed PostyBirb Plus version; affected versions are up to `3.1.75`.\n- Look for the file `ui/src/views/submissions/submission-forms/form-components/DescriptionInput.tsx` in the installed source.","plain_action":"","needs_analyst":false,"not_affected_if":["version-3.1.76-or-later"],"who_is_affected":"Teams running PostyBirb Plus up to version 3.1.75 where users edit submission descriptions. The sources do not say whether a default install exposes the editor to outside users, so the exposure depends on who can supply content to it.","user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000671,"input_tokens":4229,"output_tokens":496,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-120190':14A,17A '-2026':13A,16A '3.1.75':77C '3.1.76':127C '6b11c2345ad98ae59fd5404a9f1024eb1d10c8a4':136C 'address':128C 'advis':139C 'affect':78C,143C 'app':20B 'art':31B 'attack':9A,50B,104C,123C 'browser':57B 'compon':92C,144C 'content':65B 'craft':64B 'cross':39B,100C 'cross-sit':38B 'cve':12A,15A 'descript':4A,46B,94C 'desktop':19B 'desktop-app':18B 'discov':71C 'editor':5A,47B,95C 'exploit':111C 'file':88C 'flaw':42B,68C 'function':85C 'identifi':134C 'issu':130C 'let':6A 'manipul':97C 'may':105C,119C 'open':62B 'packag':21B 'patch':132C 'perform':107C 'plus':2A,24B,26B,74C 'post':30B 'postybirb':1A,23B,25B,73C 'postybirb-plus':22B 'public':117C 'releas':114C 'remot':8A,49B,109C 'result':98C 'run':10A,54B 'script':11A,41B,53B,102C 'secur':67C 'site':40B,101C 'submiss':3A,33B,45B,93C 'tool':28B 'ui/src/views/submissions/submission-forms/form-components/descriptioninput.tsx':89C 'unknown':84C 'upgrad':124C,141C 'use':121C 'user':60B 'version':126C 'vulner':81C 'websit':35B","nicknames":[],"mitigations":[],"who_affected":"Teams running PostyBirb Plus up to version 3.1.75 where users edit submission descriptions. The sources do not say whether a default install exposes the editor to outside users, so the exposure depends on who can supply content to it.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"developers","plain_action":null,"first_public_at":"2026-11-01T01:17:17+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/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":"cna@vuldb.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-120190","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120190","severity":null,"published_at":"2026-11-01T01:17:17+00:00","modified_at":"2026-11-01T01:17:17+00:00","first_seen_at":"2026-11-01T01:47:20+00:00","fetched_at":"2026-11-01T01:47:20+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"}