The April consumer price index landed at 3.8% annual inflation, according to a CNBC report by Alex Harring. That number is significant because it remains well above the Federal Reserve's target of 2%. The culprit is energy. The Iran war is creating oil supply shocks that push gasoline prices higher, and those higher prices ripple through the broader economy.

Inflation at 3.8% is not catastrophic by historical standards, but it is stubbornly high. The Federal Reserve has been fighting to bring inflation down from its peak two years ago, and this reading shows the battle is far from over. The central bank's preferred metric is the Personal Consumption Expenditures index, which runs cooler than CPI, but the CPI report is the one that households feel at the pump and in the grocery aisle.

Energy is the main driver. When oil supply is disrupted by a war in the Middle East, the impact is immediate and visible. Gas stations raise prices, diesel costs rise for trucking, and the cost of moving goods climbs. That feeds into almost everything a consumer buys. The CNBC report specifically points to the Iran war as the source of the supply shock, which suggests that the inflation problem has a geopolitical dimension that monetary policy cannot easily solve.

The Federal Reserve can raise interest rates to cool demand, but it cannot drill for oil or negotiate a ceasefire. So the central bank is left in a difficult position: raise rates further and risk slowing the economy too much, or hold steady and accept that inflation will stay above target for longer. The April CPI figure makes that choice no easier.

Consumers are feeling the pinch. Gas prices are the most visible sign of inflation, and they tend to shape public sentiment about the economy. A driver seeing $4 a gallon for regular unleaded does not care about core inflation or trimmed mean averages. They care about the number on the pump. The Iran war is keeping that number high.

But energy is not the whole story. While the report emphasizes energy as the main driver, other categories matter too. Shelter costs, for example, have been slow to moderate. Food prices have stabilized somewhat but remain elevated. And services inflation has been sticky because wages are rising in a tight labor market. The combination means that even if energy prices stabilize, overall inflation may not fall quickly back to 2%.

The April CPI number comes at a time when the economy is sending mixed signals. Gross domestic product growth has slowed, but the labor market remains strong. The stock market has been volatile as investors try to guess the Fed's next move. The Iran war adds a layer of uncertainty that makes forecasting especially difficult.

Some economists argue that supply-driven inflation like this is transitory by nature. Once the conflict ends and oil flows again, prices should moderate. But predicting when the Iran war will end is impossible. The conflict could drag on for months or years, and each new escalation threatens further supply disruptions. The inflation report is a snapshot, not a prediction, but it captures a moment when geopolitical risk is translating directly into household costs.

The report also raises questions about how the Fed communicates its inflation target. The 2% goal was set years ago, and some economists have suggested it is too rigid. A 3.8% inflation rate is not hyperinflation, but it is nearly double the target. The Fed could adjust the target upward, but doing so would risk losing credibility and unanchoring expectations. The current approach appears to be patience: wait for supply shocks to fade and hope that demand-side pressures continue to ease.

For consumers, the practical advice is straightforward but unpleasant. Budget for higher gas prices. Expect that goods that depend on transportation — which is almost everything — will not get cheaper soon. If you have variable-rate debt, prepare for the possibility that the Fed may keep rates higher for longer, meaning credit card and loan payments could stay elevated.

For investors, the inflation report reinforces the case for caution. Energy stocks have risen on the supply shock, but broader market valuations depend on interest rates staying manageable. If inflation stays above 3% for another quarter, the Fed will be under pressure to tighten further, and that could hit growth stocks hard.

The bigger picture is that the Iran war is rewriting the economic playbook. The United States has become a major oil producer in the last decade, but the global oil market is still vulnerable to shocks in the Middle East. This conflict demonstrates that energy independence is not the same as energy insulation. A war in the Strait of Hormuz or a disruption to Saudi production would hit U.S. drivers no matter how much the Permian Basin produces.

CNBC's Alex Harring broke down the April CPI data in a report produced by Macklin Fishman, with animation by Emily Park and Jason Reginato and editing by Andrea Miller. The report uses government data to show that the inflation fight is not over. The 3.8% annual rate is a reminder that the Fed's 2% target was always aspirational, and that real-world events — wars, supply chains, weather — can knock the economy off course.

What comes next depends on the Iran war. If diplomacy or a ceasefire emerges, oil prices could fall quickly, and inflation could drop below 3% by the fall. If the conflict escalates, the 3.8% reading could look like a low point. The April CPI is just one data point, but it is an important one. It tells us that the forces driving inflation are not fading on their own. They require a resolution that is political and diplomatic, not just monetary.

The Federal Reserve cannot stop a war. It can only respond to the economic consequences. The April consumer price index makes clear that those consequences are real, and they are showing up at the gas station.