# CVE-2026-28789: OliveTin has unauthenticated DoS via concurrent map writes in OAuth2 state handling

Source: https://junglewise.ai/threats/cve-2026-28789-olivetin-has-unauthenticated-dos-via-concurrent-map-writes-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-10  
License: CC BY 4.0 with a link back

CVE-2026-28789 · Severity: low · CVSS 3.1 · Published 2026-03-10

OliveTin has unauthenticated DoS via concurrent map writes in OAuth2 state handling in github.com/OliveTin/OliveTin

Technologies: [github.com/OliveTin/OliveTin (Go)](https://junglewise.ai/threats/technologies/github-com-olivetin-olivetin). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2026-28789 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-28789 being exploited in the wild.

**How severe is CVE-2026-28789?** Low severity, with a CVSS score of 3.1, published 10 March 2026.

**Which products and versions are affected?** github.com/OliveTin/OliveTin (Go) SEMVER:introduced=0, SEMVER:introduced=0,fixed=0.0.0-20260301235225-f044d90d5525c.

**Is there a fix for CVE-2026-28789?** Yes. github.com/OliveTin/OliveTin (Go): upgrade to 0.0.0-20260301235225-f044d90d5525c or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2026-28789?** Check whether you run github.com/OliveTin/OliveTin (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/OliveTin/OliveTin (Go): upgrade to 0.0.0-20260301235225-f044d90d5525c or later

  ```sh
  go get github.com/OliveTin/OliveTin@v0.0.0-20260301235225-f044d90d5525c
  ```


## Affected products

- github.com/OliveTin/OliveTin (Go) SEMVER:introduced=0, SEMVER:introduced=0,fixed=0.0.0-20260301235225-f044d90d5525c

## Identifiers

- CVE-2026-28789
- GHSA-45m3-398w-m2m9
- GO-2026-4586

## Related threats

- [OliveTin input filtering bypass via ot_ prefixed arguments](https://junglewise.ai/threats/cve-2026-53541-olivetin-input-filtering-bypass-via-ot-prefixed-arguments)
- [OliveTin incorrect authorization in synchronous execution endpoints](https://junglewise.ai/threats/cve-2026-67439-olivetin-incorrect-authorization-in-synchronous-execution)
- [OliveTin OS command injection in regex argument validation](https://junglewise.ai/threats/cve-2026-67438-olivetin-os-command-injection-in-regex-argument-validation)
- [OliveTin memory exhaustion via unbounded OAuth2 state map growth](https://junglewise.ai/threats/cve-2026-67437-olivetin-memory-exhaustion-via-unbounded-oauth2-state-map-growth)
- [OliveTin missing authorization in ValidateArgumentType API](https://junglewise.ai/threats/cve-2026-48709-olivetin-missing-authorization-in-validateargumenttype-api)