Full Breakdown
PHP Vulnerability Prompts Temporary Shutdown of Canadian Government Websites
By Drooid · · How we work
Core Event
On October 21, 2026, Canadian officials learned of a critical vulnerability in PHP—the programming language that underlies roughly 70 percent of the world’s websites. The flaw could let a malicious actor run unauthorized commands on affected systems without authentication. In response, the chief information officer of the Government of Canada announced that several federal sites, including the Canadian Intellectual Property Office and Statistics Canada, were taken offline as a precaution while security updates were applied.
Background & Context
The PHP weakness was uncovered using artificial-intelligence tools and had existed for years before being disclosed. The PHP Foundation released urgent patches on the same day, urging immediate updates. Governments worldwide—including the British Columbia provincial government, Finland, and multiple European ministries—simultaneously removed or restricted access to vulnerable webpages. The rapid, coordinated response highlighted the extensive reliance of public and private services on PHP-based platforms.
Official Statements & Responses
The chief information officer emphasized that remediation work was underway and that any service disruptions were temporary. Artificial-intelligence minister Evan Solomon told a Senate committee that the government was taking the discovery “very seriously” and that proactive takedowns were intended to protect Canadians’ information. The Canadian Centre for Cyber Security provided guidance that led to the precautionary shutdowns.
Data & Statistics
Cloudflare reported a dramatic surge in exploitation attempts after the vulnerability became public. In the ten hours preceding the announcement, the network observed “thousands of attempts,” which rose to “tens of thousands” within 45 minutes and “hundreds of thousands” within two hours, eventually reaching “millions” of attempts.
Verbatim Quotes
- “We took some websites proactively offline because there are PHP software in there and as a precaution to protect against that,” — Evan Solomon, artificial intelligence minister
- “Details of these flaws became public before fixes were ready, and attacks have since been reported,” — Madeline Lawrence, co-founder of Belgian cybersecurity firm Aikido Security speaking to Reuters
- “In the 10 hours before it was publicly announced, across the network we saw thousands of attempts to exploit it,” — Cloudflare CEO Matthew Prince