"The danger listing is intended to mobilize all possible support for the safeguarding of these properties," the United Nations Educational, Scientific and Cultural Organization (UNESCO) said in a statement.
The committee will also consider the creation of a special fund to rescue Syria's World Heritages.
The report found that the ancient cities of Aleppo, Damascus and Bosra have been damaged during the civil war, which has claimed more than 93,000 lives and caused huge destruction.
"We saw more trouble spots during the last years that affected world heritage sites," Mechtild Rossler, deputy director of the World Heritage Centre told dpa.
"The state has to inform us if sites are in danger, what did happen in the case of Syria. The documents we provided to the committee contain (this) information," she added.
During its annual meeting, which run to Sunday, the committee will also decide whether 30 sites, including Japan’s Mount Fuji and the city of Agadez in Niger, are of “outstanding universal value” and will be added to the World Heritage list.