{"id":"CVE-2026-116641","kind":"vulnerability","aliases":["CVE-2026-116641"],"related":[],"title":"DB Tools: Go TLS trust store lacks eMudhra CA denylist entries","description":"The DB Tools rely on the TLS implementation in Golang’s standard library, which generally uses the system CA store. However, the crypto/x509 package also has its own internal denylist of known-bad CA certificates. Golang 1.27.3 adds the eMudhra certificates to this list.\n\n\n\n\nDB Tools version 100.19.0 was compiled with Golang 1.26.8, which does not include this check.\n\n\n\n\nThe issue is resolved by updating to Golang 1.27.3 in DB Tools 100.20.0","summary":"DB Tools 100.19.0 was built with Go 1.26.8, which does not block certificates issued by the eMudhra certificate authorities, a list that Go 1.27.3 adds. The sources do not describe a concrete attack path beyond that gap in certificate trust checks.","severity":"high","cvss":7.6,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["db-tools","golang","other","tls"],"not_affected_if":["fixed-version"],"how_to_check":"- Check the DB Tools version in the installed application; versions up to `100.19.0` are listed as affected\n- Confirm which Go toolchain the build used; `1.26.8` is listed as lacking the check\n- unknown","fix":"- Update DB Tools to `100.20.0`, which is built with Go `1.27.3`","status":"open","published_at":"2026-10-28T22:17:12+00:00","first_seen_at":"2026-10-28T22:35:34+00:00","triaged_at":"2026-10-28T22:36:45+00:00","updated_at":"2026-10-28T22:36:45+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-10-28T22:36:45Z","model":"claude-haiku-5-5","output":{"fix":"- Update DB Tools to `100.20.0`, which is built with Go `1.27.3`","reach":"unknown","title":"DB Tools: Go TLS trust store lacks eMudhra CA denylist entries","impact":"medium","summary":"DB Tools 100.19.0 was built with Go 1.26.8, which does not block certificates issued by the eMudhra certificate authorities, a list that Go 1.27.3 adds. The sources do not describe a concrete attack path beyond that gap in certificate trust checks.","category":"other","nicknames":[],"who_cares":["db-tools","golang","tls"],"confidence":0.5,"needs_auth":"unknown","worst_case":"Connections may trust certificates from a denylisted eMudhra authority","analyst_note":"Check the NVD entry and the DB Tools release notes to confirm the exploitation path and whether the flaw is reachable over the network.","how_to_check":"- Check the DB Tools version in the installed application; versions up to `100.19.0` are listed as affected\n- Confirm which Go toolchain the build used; `1.26.8` is listed as lacking the check\n- unknown","needs_analyst":true,"not_affected_if":["fixed-version"],"who_is_affected":"Teams that run DB Tools 100.19.0 or earlier, which relies on the Go standard library TLS stack and the system CA store. The sources do not say whether exposure requires a specific connection path or configuration. Teams on later DB Tools builds can skip it.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000615,"input_tokens":3378,"output_tokens":554,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-116641':14A,17A '-2026':13A,16A '1.26.8':31B,118C '1.27.3':47B,102C,133C '100.19.0':26B,113C '100.20.0':137C 'add':48B,103C 'also':89C 'attack':56B 'author':42B 'bad':98C 'beyond':58B 'block':35B 'built':28B 'ca':9A,83C,99C 'certif':36B,41B,62B,100C,106C 'check':64B,124C 'compil':115C 'concret':55B 'crypto/x509':87C 'cve':12A,15A 'db':1A,19B,24B,66C,110C,135C 'db-tool':18B 'denylist':10A,94C 'describ':53B 'emudhra':8A,40B,105C 'entri':11A 'gap':60B 'general':79C 'go':3A,30B,46B 'golang':21B,74C,101C,117C,132C 'howev':85C 'implement':72C 'includ':122C 'intern':93C 'issu':37B,126C 'known':97C 'known-bad':96C 'lack':7A 'librari':77C 'list':44B,109C 'packag':88C 'path':57B 'reli':68C 'resolv':128C 'sourc':50B 'standard':76C 'store':6A,84C 'system':82C 'tls':4A,23B,71C 'tool':2A,20B,25B,67C,111C,136C 'trust':5A,63B 'updat':130C 'use':80C 'version':112C","nicknames":[],"mitigations":[],"who_affected":"Teams that run DB Tools 100.19.0 or earlier, which relies on the Go standard library TLS stack and the system CA store. The sources do not say whether exposure requires a specific connection path or configuration. Teams on later DB Tools builds can skip it.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-28T22:17:12+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/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":"cna@mongodb.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-116641","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116641","severity":null,"published_at":"2026-10-28T22:17:12+00:00","modified_at":"2026-10-28T22:17:12+00:00","first_seen_at":"2026-10-28T22:35:34+00:00","fetched_at":"2026-10-28T22:35:34+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"}