Karl Hawley's equaliser earned Carlisle a point against Northampton, who maintained their unbeaten away record.
Carlisle were rocked by a defensive mistake a minute after half-time which allowed Scott McGleish to steal in and grab the lead for the visitors.
Carlisle levelled after 57 minutes when Simon Hackney and Paul Murray combined and Hawley struck from eight yards.
Hawley shot over and Chris Lumsdon sent a free header at the keeper as the Cumbrians wasted late chances.
Carlisle: Westwood, Raven, Gray, Murphy, Aranalde, Murray, Lumsdon, Hackney (Hindmarch 86), Gall, Holmes (Thirlwell 54), Hawley.
Subs Not Used: Williams, Livesey, Arnison.
Goals: Hawley 56.
Northampton: Bunn, Chambers, Doig, Dyche, Crowe, Watt (Bojic 62), Taylor, Burnell, Aiston (Gilligan 45), Kirk (Quinn 75), McGleish.
Subs Not Used: Harper, Brett Johnson.
Goals: McGleish 47.
Ref: A Hall (W Midlands).