The report said children in care or involved in gangs were most at risk of being exploited
A report has found at least 132 children in Birmingham are suffering or are vulnerable to sexual exploitation.
The findings were published after a year-long investigation by the city council's scrutiny committee.
The report said children in care or involved in gangs were most at risk of being exploited.
It acknowledged a "serious child sexual exploitation problem" in Birmingham but said the "totality of the problem" was unclear.
Councillor Brigid Jones, cabinet member for children and young people, said the council was requesting £123m over the next three years to improve its children's department, which has been rated inadequate since 2008.
She said the authority would work with police and schools to tackle child sex exploitation but said the issue was not solely the responsibility of the council.
"It's all of society," she said.
"Particularly our approach to young women and how we treat them."
Birmingham City Council's children's services have been rated inadequate since 2008
The report - called We Need to Get it Right - identified 83 children most at risk, three boys and 80 girls.
It found "good practice" in general but said there were "a few cases where appropriate action had not been taken".
Figures in the report - based on information collected in September - "do not provide a complete picture of the extent of CSE in the city of Birmingham for various reasons", it said.
The council said it hoped it would act as a "wake-up call" to professionals and children, who "may not consider themselves victims".
"This will help increase understanding," the report said, "although given the hidden nature of this crime it will still not show the whole picture."
The report said West Midlands Police had told the council "every ward in the city has got risks and potential and every area has a story around CSE: victim, offender or location."
Last week Birmingham City Council became the first authority to use civil injunctions in a bid to block child sex exploitation.
Nine men were barred from approaching "any female under 18", with whom they were not personally associated.
The High Court injunctions came after social workers raised concerns about the welfare of a 17-year-old girl.
The council said it was working on a wider review of child sexual exploitation in Birmingham.
Bernie McNally, the former social services executive director at the Belfast Health and Social Care Trust, had been due to take over as executive director for children's services in Birmingham but she has withdrawn her interest.