The Soviet news agency Tass charged tonight that counterrevolutionary forces in Poland "are actually starting a frontal attack on the [Communist] Party" in an effort "to undermine the country's economy still further."

In a dispatch from Warsaw, Tass accused the Committee for Social Self-Defense, known as KOR, and "the right-wing grouping in the Solidarity leadership" of criminal acts aimed at disrupting the party's authority, pulling down its leaders, and subverting the key Soviet ally.

The dispatch seemingly was written before the Warsaw government gave in to workers demands that local party officials in the Bielski-Biala region be dismissed to end a general strike there. But some sources speculated that the dispatch was deliberately timed as a warning to the Poles to hold the line on further concession to the independent trade union movement.

Despite the ambiguity, Tass made plain Moscow's anger and nervousness at the situation in Poland, and showed anew the dilemma of party leader Stanislaw Kania's government, which is caught between increasingly sharp Soviet denunciations and and the workers' demands for political and economic concessions as the price of labor peace.

Tass made no mention of Solidarity's access to Polish media promised by the government but expressed concern about who holds the censorship reins. It said that Solidarity "organized a pogrom" of a magazine called Plomene because they did not like "the magazine's exposure of the incendiary activities of antisocialist forces."

Tass also charged that workers had distributed leaflets in Bielski-Biala calling for party leaders to be fired, and declared that in Warsaw, Wroclaw, and Katowice other leaflets were passed out containing comprehensive antiparty instructions.

"These and other facts show that the counterrevolutionary forces are actually starting a frontal attack on the party and the people's power, trying to undermine its economy further and complicate the life of all Polish citizens," Tass said.

The Soviet media have turned increasingly critical of Poland as Warsaw has been unable to stem the tide of strikes and demands for new party leadership in the provinces. The sweping repudiation of the Polish Communists, which seems likely to continue right up to the opening of the Soviet Communist Party Congress here Feb. 23, is acutely embarrassing to Moscow.