# Semgrep: Elevated errors on managed diff scans

- Impact (vendor’s label): major
- Status: resolved
- Started: 2026-03-13 18:10 UTC · Resolved: 2026-03-13 19:48 UTC · Duration: 1.6 h
- Updates: 5 · Affected components: Managed Scans, semgrep.dev - Managed Scans
- [Vendor status page: https://stspg.io/8644x1mv1pfy](https://stspg.io/8644x1mv1pfy)
- [Company: Semgrep](https://rewindex.com/company/semgrep.md)

## Summary

Semgrep reported a major incident affecting Managed Scans: some jobs failed, primarily diff scans used for PR/MR checks. The incident ran from 2026-03-13 18:10 UTC to 2026-03-13 19:48 UTC (1 h 37 min), though errors began rising at 2026-03-13 04:30 UTC. Semgrep increased resources for affected projects; customers could push a new commit to trigger a new scan. _(machine-written, sol)_
## Timeline of updates

- **investigating** 2026-03-13 18:10 UTC: Errors started Mar 12 at 21:30 PST and have been increasing since then.
- **investigating** 2026-03-13 18:15 UTC: We are investigating issues that are causing some Semgrep Managed Scan (SMS) scan jobs to fail. This is primarily affecting diff scans, which are used for checks on PRs and MRs. The error rate began to rise at approximately 21:30PT on Thursday, March 12 (2026-03-13 04:30 UTC). We will share updates as information becomes available.
- **identified** 2026-03-13 18:55 UTC: We have identified the cause of the problem and are working on a fix.
- **monitoring** 2026-03-13 19:25 UTC: We’ve assessed that the scan failures are due to insufficient resources allocated to scans in particular projects. In response, we increased the resources available to affected projects. We are actively monitoring scan performance, and we’re seeing errors diminish. If your repository was affected, you can push a new commit to your PR/MR to trigger a new scan. The new scan will run with increased resources.
- **resolved** 2026-03-13 19:48 UTC: This incident has been resolved.

## Rewindex changes for this incident

- 2026-03-13 18:10 UTC: [Major incident: Elevated errors on managed diff scans](https://rewindex.com/change/ia04ebd74d9a351.md)


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Canonical: https://rewindex.com/company/semgrep/incidents/gdhdd8cctrxv · Markdown: https://rewindex.com/company/semgrep/incidents/gdhdd8cctrxv.md · JSON: https://rewindex.com/api/v1/companies/semgrep/incidents/gdhdd8cctrxv · Generated 2026-10-18T09:36:58.393Z