It added that there has been a significant increase in targeted and explosive device attacks against civilians.
At least 3,774 civilians have been killed and wounded by the attacks since the Taliban took over the country in 2021, the organisation said.
The report stressed that there has been a rise in attacks on places of worship and against the minority Hazara community.
The report also said that the number of civilian casualties as a result of IED attacks carried out by ISIL-KP significantly increased in the immediate aftermath of the Taliban takeover on 15 August 2021.
IED attacks on places of worship, mostly Shia Muslim sites, accounted for more than one-third of all civilian casualties recorded during the reporting period, the report stated.
In addition to attacks on Shia places of worship, the report said there were at least 345 (95 killed, 250 wounded) casualties as a result of attacks targeting the predominantly Shia Muslim Hazara community in schools and other educational facilities, on crowded streets and on public transportation.
"These attacks on civilians and civilian objects are reprehensible and must stop," said Fiona Frazer, chief of UNAMA's Human Rights Service.
The UN urged the Taliban to uphold their obligation to protect the right to life by carrying out independent, impartial, prompt, thorough, effective, credible, and transparent investigations into IED attacks affecting civilians.
According to the report, published on Tuesday, 1,095 people were killed and 2,679 injured in the attacks.
The UN mission also said that victims of violent attacks in Afghanistan previously did not have access to the necessary health services and support, and with the Taliban's dominance, this type of support has diminished.