{"id":"CVE-2026-106140","kind":"vulnerability","aliases":["CVE-2026-106140"],"related":[],"title":"Telerik Reporting: untrusted data in report designer lets local user run code","description":"In Progress® Telerik® Reporting prior to version 20.3.26.1110, a deserialization of untrusted data vulnerability in the .NET Framework report designers allows a local attacker with low privileges to execute arbitrary code in the context of the designer process when the user performs certain editing operations.","summary":"Telerik Reporting versions before 20.3.26.1110 deserialize untrusted data in the .NET Framework report designers. A local attacker with low privileges can execute arbitrary code in the designer process when a user performs certain editing operations.","severity":"high","cvss":7.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":[".net-framework","package","telerik-reporting","windows"],"not_affected_if":["designers-not-used","versions-at-or-above-20.3.26.1110"],"how_to_check":"- Check the installed Telerik Reporting version in the project's package references (for example the NuGet package list) for versions below `20.3.26.1110`\n- Check whether the report designers are used on developer or analyst machines","fix":"- Telerik Reporting: move to `20.3.26.1110` or later","status":"open","published_at":"2026-11-12T10:17:26+00:00","first_seen_at":"2026-11-12T10:37:45+00:00","triaged_at":"2026-11-12T10:39:39+00:00","updated_at":"2026-11-12T10:39:39+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-11-12T10:39:39Z","model":"claude-haiku-5-5","output":{"fix":"- Telerik Reporting: move to `20.3.26.1110` or later","reach":"local","title":"Telerik Reporting: untrusted data in report designer lets local user run code","impact":"high","summary":"Telerik Reporting versions before 20.3.26.1110 deserialize untrusted data in the .NET Framework report designers. A local attacker with low privileges can execute arbitrary code in the designer process when a user performs certain editing operations.","audience":"developers","category":"package","nicknames":[],"who_cares":["telerik-reporting",".net-framework","windows"],"confidence":0.7,"fix_status":"available","needs_auth":"yes","worst_case":"code runs in the designer process on the local machine","analyst_note":"","how_to_check":"- Check the installed Telerik Reporting version in the project's package references (for example the NuGet package list) for versions below `20.3.26.1110`\n- Check whether the report designers are used on developer or analyst machines","plain_action":"","product_name":"","needs_analyst":false,"not_affected_if":["designers-not-used","versions-at-or-above-20.3.26.1110"],"who_is_affected":"Teams that use the Telerik Reporting report designers in .NET Framework applications. The risk is local: an attacker needs an account on the machine and a user must perform certain editing operations in the designer. Teams that do not ship or run the designers can skip it.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.00071,"input_tokens":4557,"output_tokens":508,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-106140':15A,18A '-2026':14A,17A '20.3.26.1110':31B,69C 'allow':82C 'arbitrari':49B,91C 'attack':43B,85C 'certain':59B,104C 'code':12A,50B,92C 'context':95C 'cve':13A,16A 'data':4A,34B,74C 'deseri':32B,71C 'design':7A,40B,53B,81C,98C 'edit':60B,105C 'execut':48B,90C 'framework':21B,38B,79C 'let':8A 'local':9A,42B,84C 'low':45B,87C 'net':20B,37B,78C 'net-framework':19B 'oper':61B,106C 'packag':22B 'perform':58B,103C 'prior':66C 'privileg':46B,88C 'process':54B,99C 'progress':63C 'report':2A,6A,25B,28B,39B,65C,80C 'run':11A 'telerik':1A,24B,27B,64C 'telerik-report':23B 'untrust':3A,33B,73C 'user':10A,57B,102C 'version':29B,68C 'vulner':75C 'window':26B","nicknames":[],"mitigations":[],"who_affected":"Teams that use the Telerik Reporting report designers in .NET Framework applications. The risk is local: an attacker needs an account on the machine and a user must perform certain editing operations in the designer. Teams that do not ship or run the designers can skip it.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"developers","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","netframework","package","telerikreporting","windows"],"campaign_type":null,"search_a":"'-106140':15A,18A '-2026':14A,17A 'code':12A 'cve':13A,16A 'data':4A 'design':7A 'let':8A 'local':9A 'report':2A,6A 'run':11A 'telerik':1A 'untrust':3A 'user':10A","search_b":"'20.3.26.1110':31B 'arbitrari':49B 'attack':43B 'certain':59B 'code':50B 'data':34B 'deseri':32B 'design':40B,53B 'edit':60B 'execut':48B 'framework':21B,38B 'local':42B 'low':45B 'net':20B,37B 'net-framework':19B 'oper':61B 'packag':22B 'perform':58B 'privileg':46B 'process':54B 'report':25B,28B,39B 'telerik':24B,27B 'telerik-report':23B 'untrust':33B 'user':57B 'version':29B 'window':26B","search_c":"'20.3.26.1110':69C 'allow':82C 'arbitrari':91C 'attack':85C 'certain':104C 'code':92C 'context':95C 'data':74C 'deseri':71C 'design':81C,98C 'edit':105C 'execut':90C 'framework':79C 'local':84C 'low':87C 'net':78C 'oper':106C 'perform':103C 'prior':66C 'privileg':88C 'process':99C 'progress':63C 'report':65C,80C 'telerik':64C 'untrust':73C 'user':102C 'version':68C 'vulner':75C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-12T10:17:26+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","cvss_by":"security@progress.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-106140","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106140","severity":null,"published_at":"2026-11-12T10:17:26+00:00","modified_at":"2026-11-12T10:17:26+00:00","first_seen_at":"2026-11-12T10:37:45+00:00","fetched_at":"2026-11-12T10:37:45+00:00","note":null}],"documents":[],"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"}