# Semgrep: Major incident: Login and scans are failing for some users

**Summary:** Semgrep reported a major outage affecting some users’ logins, managed scan starts, and CI scan result processing from 2026-04-20 20:37 UTC to 2026-04-21 00:29 UTC, lasting 3 h 51 min. Semgrep identified backend issues without detailing the cause; scans and logins were processing normally at resolution. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-04-20 20:37 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/t0m704f0rkxj](https://stspg.io/t0m704f0rkxj)
- [Company: Semgrep](https://rewindex.com/company/semgrep.md)
- Versions: before (none: first archived) → after incident\_version:316/7h22pkxbddrf@1060365a1b2e
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Login and scans are failing for some users
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-04-20 20:37 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-04-21 00:29 UTC
```

**6. Added: Affected components**

```diff
+ Login/SSO, Managed Scans, semgrep.dev - Login/SSO, semgrep.dev - Managed Scans
```

**7. Added: Update** (investigating) · 2026-04-20 20:37 UTC

```diff
+ Some users are unable to log in; some managed scans are failing to start, and CI scans may not be able to process results. We're investigating the cause of all three.
```

**8. Added: Update** (identified) · 2026-04-20 21:56 UTC

```diff
+ We've identified the cause of the backend issues. Some traffic has resumed but services are still degraded, and we're continuing to remediate.
```

**9. Added: Update** (resolved) · 2026-04-21 00:29 UTC

```diff
+ The problem is resolved and scans and logins are now processing normally.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-04-20 20:37 UTC | Major incident: Login and scans are failing for some users (this change) | outage |

All Semgrep changes: [timeline](https://rewindex.com/company/semgrep/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


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Canonical: https://rewindex.com/change/i88faa45f0c126c · Markdown: https://rewindex.com/change/i88faa45f0c126c.md · JSON: https://rewindex.com/api/v1/changes/i88faa45f0c126c · Generated 2026-10-18T03:33:46.704Z