CircleCI Status

Identified: On July 13 between 15:30 UTC and 22:40 UTC, we experienced delays starting jobs on Docker (Gen 2) resource classes due to capacity constraints from our cloud provider. Delays reached up to approximately 1 minute 48 seconds.

We are continuing to experience these delays again since approximately 15:45 UTC. So far, delays have reached up to approximately 1 minute 19 seconds.

We are working with our cloud provider to add capacity and will update this incident as the situation changes.

Postmortem: ## Summary

From 01:33 UTC to 05:18 UTC on July 14, 2026, customers with a Bitbucket-linked identity were unable to log in to CircleCI, and some customers experienced workflows that failed to start or update, due to a change in how Bitbucket's OAuth service reports account permissions. At 05:07 UTC, we deployed a fix that corrected how our systems read the updated permissions field. Some customers needed to log out and re-authenticate their Bitbucket integration after we deployed the fix. Our systems continued processing the backlog of affected jobs until 08:39 UTC.

We thank our customers for their patience as we resolved this incident. Please reach out to our support team with any questions or concerns.

The status page for this incident can be found here.

Background

CircleCI supports logging in with a GitHub account, a Bitbucket account, or an email and password. When a customer logs in with a Bitbucket-linked identity, or when CircleCI needs to refresh the customer's access on their behalf, we exchange an authorization token with Bitbucket's OAuth service. This exchange includes a list of the permissions, or "scopes," the customer has granted us, which Bitbucket and CircleCI use to confirm what CircleCI is authorized to do on the customer’s behalf.

What Happened

(All times UTC)

On April 8, 2026, Bitbucket announced a change to its OAuth service: it would be renaming the field used to report a customer's granted permissions. Bitbucket ran a transition period during which both the old and new field names were available, then fully removed the old field name on May 4, 2026. Our systems had not been updated to recognize the new field name, so once Bitbucket fully phased out the old one, requests that depended on it began to fail.

At 01:33 on July 14, 2026, our systems began failing to process permissions information returned for Bitbucket-linked accounts, because our systems still expected the old permissions structure. This caused login attempts for all Bitbucket-linked accounts to fail, including for customers who log in with GitHub but have a Bitbucket identity linked to their account.

At 01:59, automated monitoring alerted our engineering team to a spike in errors on the affected systems. The team began investigating immediately, confirmed customer impact at 02:38, and alerted customers via our status page at 02:51. By 03:00, the team had isolated the failures to the renamed Bitbucket field.

Beginning at 03:17, workflow status updates for Bitbucket pipelines belonging to customers with an expired access token began to be dropped. The Bitbucket permissions check is used broadly across our platform, and these permissions failures also affected some of our internal job-processing systems. This caused a subset of workflows to become stuck without a final status, and caused some pull requests to show missing or stuck status checks.

At 04:21, the team deployed an initial fix that resolved the underlying issue, restoring the login flow and returning our internal permissions system to normal operation. Some affected customers needed to log out and log back in to pick up the fix. By 05:07, the team deployed two additional fixes so our systems would begin accepting Bitbucket's new permissions field format going forward. We resolved the incident at 05:18.

Some customers did need to log out and re-authenticate their Bitbucket integration before their account fully recovered. Our systems continued processing a backlog of affected jobs, returning to normal levels by approximately 08:39.

Future Prevention and Process Improvement

We are taking the following steps to prevent a recurrence and improve our response time:

We are hardening our authorization code against upstream API changes. This incident happened because our system did not gracefully handle a renamed field in a response from a third-party identity provider. We will be immediately updating our authorization code so that unexpected or missing fields from GitHub, Bitbucket, and GitLab are handled safely.

We are improving how we track upstream provider changes. We currently already monitor changelogs from our identity providers for exactly this kind of breaking change, but we didn't add this particular provider change to our monitoring in time to catch it before it shipped. We are auditing and expanding this monitoring so provider announcements reach our team before they affect customers.

We are improving how we classify and communicate incidents in their earliest minutes. This incident's initial classification did not immediately reflect its customer-facing severity. We are refining our incident tooling and guidance to help engineers identify and communicate customer impact more quickly.

We are improving the resilience of our workflow-processing pipeline. A downstream failure in this incident caused some workflow status updates to be dropped rather than retried or clearly surfaced. We are reviewing this system's retry and error-handling behavior so similar downstream failures are more visible and easier to recover from.

Customer experience is our top priority, and we commit to continually improving the reliability of our systems to match the trust that our customers place in us. Please reach out to our support team with any questions or concerns.

Resolved: The issue where customers logging in with a Bitbucket-linked identity experienced login errors, and some customers experienced workflows that failed to start or did not update, has been resolved.

What you may still experience and need to do

• If you use Bitbucket as your login method, please log out and reauthenticate the CircleCI Bitbucket integration on your account.
• If any of your workflows are stuck or showing missing status checks, please rerun them to pick up the fix.
• If you continue to experience issues after taking these steps, please reach out to CircleCI Support.

We thank you for your patience while our team worked on implementing a fix.

Monitoring: What's impacted Some customers logging in with a Bitbucket-linked identity were affected. This may also have included customers logging in with GitHub who have a linked Bitbucket identity on their account. Some customers also experienced workflows that were not starting or updating.

What can you expect A fix has been deployed. We are monitoring the situation to confirm full recovery.

Next update We will provide an update if anything changes

Investigating: What's impacted Some customers logging in with a Bitbucket-linked identity are affected. This may also include customers logging in with GitHub but have a linked Bitbucket identity on their account. Additionally, some customers are experiencing workflows that are not starting or updating.

What can you expect Affected customers may see login errors. Some customers may also notice workflows that fail to start or do not update as expected. Thank you for your patience while our engineers investigate.

Next update We will provide another update as soon as we have more information to share

Investigating: Our team continues to investigate login errors affecting some customers using Bitbucket as their identity provider.

Investigating: We are currently investigating login errors affecting some customers using Bitbucket as their identity provider.

Resolved: We continue to see significant VCS fetch time recovery over the last couple of hours. We're going to resolve this incident, and our engineering team will continue to monitor closely. We greatly appreciate your patience as we worked through this with our Mac infrastructure provider. Please reach out to our Support team if you have any issues.

Monitoring: Our Mac infrastructure provider has shifted more traffic to working network providers and we're starting to see significant recovery again in VCS fetch times. As always, our engineering team will continue to monitor this closely and we'll provide another update soon.

Investigating: We're starting to see VCS fetch times rising again. Our engineering team is actively investigating and working with our Mac infrastructure provider to resolve this. Again, we appreciate your patience.

Monitoring: We're continuing to see slow, progressive recovery in VCS fetch times. We're going to continuing monitoring and update again soon. We appreciate your patience.

Monitoring: Our Mac infrastructure provider has shifted the inbound routes and we are seeing recovery in VCS fetch times. We will be continuing to monitor this issue over the next few hours. We'll update again soon.

Identified: We've identified the issue as some inbound routes from the affected VCS provider causing significantly lower available bandwidth which is negatively impacting repo fetch times. We're working with our Mac infrastructure provider to attempt to shift inbound traffic to a different route, however this process may take an extended period of time to complete. We will continue to provide updates as they become available.

As we've shared in previous updates, increasing the no_output_timeout to 15-20 min continues to help: https://support.circleci.com/hc/en-us/articles/360007188574-Build-has-Hit-Timeout-Limit

Identified: Our Mac infrastructure provider is testing changes to their network configuration in an effort to isolate the source of the issue. We're actively validating whether this resolves the impact and will follow up with another update soon. In the meantime, increasing the no_output_timeout to 15-20 min continues to help: https://support.circleci.com/hc/en-us/articles/360007188574-Build-has-Hit-Timeout-Limit

Identified: Unfortunately there are still some customers that may be experiencing jobs that hang or fail to progress during Github fetch steps due to ongoing intermittent networking issues with our Mac infrastructure provider. Our engineers are actively working with them to resolve this. We appreciate your patience.

In the meantime, we've seen success with increasing the no_output_timeout to 15 - 20 min to allow more time for Github fetches. This can be done by following this community guide: https://support.circleci.com/hc/en-us/articles/360007188574-Build-has-Hit-Timeout-Limit

Monitoring: We've identified the issue. Some customers may experience jobs that hang or fail to progress during Github fetch steps due to intermittent networking issues. Our engineers are actively monitoring.

In the meantime, we've seen success with increasing the no_output_timeout to 15 - 20 min to allow more time for Github fetches. This can be done by following this community guide: https://support.circleci.com/hc/en-us/articles/360007188574-Build-has-Hit-Timeout-Limit

Investigating: We've been able to reproduce the issue, but it still appears to be very much intermittent. We're continuing to work with our Mac infrastructure provider to help diagnose the issue. We'll update again soon.

Investigating: We're still investigating these intermittent network issues. We'll update again shortly, we appreciate your patience.

Investigating: We're received some reports of intermittent network issues between our mac infrastructure and a VCS provider again. We are investigating and will provide updates.

Resolved: We've confirmed the fix with our infrastructure provider and successful tests on our end. If customers continue to see any failed runs, please run again for a successful connection and reach out to Support if any further issues.

Monitoring: Our Mac infrastructure provider has implemented a fix, we're starting to see recovery. We're monitoring and we'll update again shortly.

Identified: We're working with our Mac infrastructure provider to attempt a mitigation. Will update again shortly.

Investigating: We've received reports of intermittent network issues between our mac infrastructure and a VCS provider. We are investigating and will provide updates.