ServiceNow Flaw Exploited to Gain Unauthorized Access to Customer Instances  Ravie Lakshmanan  Jun 10, 2026 Cyber Attack / Vulnerability ServiceNow has warned about a security incident in which unknown threat actors exploited a flaw to obtain deeper unauthorized access to susceptible instances. "On June 5, 2026, ServiceNow applied a security update to hosted customer instances," the company revealed in an advisory that requires customer access. "The update concerned a security issue that could allow an unauthenticated user, in certain circumstances, to gain greater access to ServiceNow instances than intended." The security update makes changes to an endpoint configuration to limit this access to authenticated users. The security flaw currently does not have a CVE identifier. Details of the issue first emerged on Reddit. ServiceNow said it detected anomalous activity relating to the security issue, and that it observed evidence of successful queries of instance tables against a "subset of customers." Impacted customers have been notified, it added. "The security issue pertains to customers who are on the Australia platform release or made certain configuration changes to instances on releases prior to Australia," it noted. A Reddit comment from a user named "d3s7iny" claimed that its security team reported the vulnerability to ServiceNow, adding that the software company had been aware of the problem internally since April 7, 2026. For about two months, ServiceNow is said to have classified it as a non-urgent issue, with plans to remediate it in a future update. When reached for comment, a ServiceNow spokesperson said "our main priority was to reach out directly to the subset of customers this [incident] affected, it was not broad." The company has since publicly acknowledged in an advisory that "a subset of customer instances were queried successfully as part of this activity." The malicious activity is said to have commenced on June 2, 2026. "On June 3-4, 2026, customers shared submissions to their bug bounty programs regarding a security issue that could, in certain circumstances, allow an unauthenticated user to gain unwanted access to information in ServiceNow instances," it added. "These submissions were similar to a confidential submission sent to our bug bounty program on April 22, 2026." (The story was updated after publication to include a response from ServiceNow and details of the security issue.) Found this article interesting? Follow us on Google News , Twitter and LinkedIn to read more exclusive content we post. SHARE      Tweet  Share  Share  Share   Share on Facebook  Share on Twitter  Share on Linkedin  Share on Reddit  Share on Hacker News  Share on Email  Share on WhatsApp Share on Facebook Messenger  Share on Telegram SHARE  Cloud security , cybersecurity , Data Exposure , Incident response , ServiceNow , Vulnerability ⚡ Top Stories This Week Chrome V8 Zero-Day CVE-2026-11645 Exploited in the Wild - Patch Now New FROST Attack Lets Websites Track What Sites and Apps You Open via SSD Timing One-Character Linux Kernel Flaw Enables Local Root Access, Exploits Now Public ⚡ Weekly Recap: Instagram Account Hacks, Android Zero-Day, GitHub Worm and More New ChatGPT Lockdown Mode Limits Tools That Could Enable Data Exfiltration Free Apps Are Quietly Turning Smart TVs Into Web-Scraping Proxies for AI AI Agent Uncovers 21 Zero-Days in FFmpeg; Chrome Patches Record 429 Bugs Miasma Worm Hits 73 Microsoft GitHub Repositories in Major Supply Chain Attack Cisco Patches CVE-2026-20230 in Unified CM as Exploit Code Goes Public Claude Code GitHub Action Flaw Let One Malicious Issue Hijack Repositories Microsoft Fixes One-Click GitHub Dev Attack That Let Attackers Steal OAuth Tokens Autonomous AI Tool Finds 2-Year-Old RCE Flaw in Redis (CVE-2026-23479) Microsoft 365 Android Apps Let Any App Steal Account Tokens via Leftover Debug Flag Unpatched Windows Search URI Vulnerability Lets Attackers Steal NTLMv2 Hashes New HTTP/2 Bomb Vulnerability Allows Remote DoS on NGINX, Apache, IIS, Envoy and Cloudflare ThreatsDay Bulletin: AI Agents Gone Wrong, Sketchy C2 Tools, ClickFix Tricks, JS Backdoors + 20 New Stories ⭐ Featured Resources Get the 2026 Guide to Govern and Secure Enterprise AI Agents at Scale Catch 88% of Malware Threats in Under 60 Seconds with Live Sandbox Analysis [Guide] Transform Network Operations with Intelligent Workflows See How Agentic AI Cuts Your SOC Triage Time in Half [Get a Demo]