# Lemmy resend-verification endpoint exposes registered email addresses to unauthenticated users

Source: https://junglewise.ai/threats/lemmy-resend-verification-endpoint-exposes-registered-email-addresses-3196db11  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-06  
License: CC BY 4.0 with a link back

Severity: medium · CVSS 4 · Published 2026-05-06

Lemmy resend-verification endpoint exposes registered email addresses to unauthenticated users

Technologies: [lemmy_api (crates.io)](https://junglewise.ai/threats/technologies/lemmy-api). Vendors: [crates.io](https://junglewise.ai/threats/vendors/crates-io).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Medium severity, with a CVSS score of 4, published 6 May 2026.

**Which products and versions are affected?** lemmy_api (crates.io) SEMVER:introduced=0,last_affected=0.19.1-rc.1.

**Is there a fix for This vulnerability?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected?** Check whether you run lemmy_api (crates.io) 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.

## Affected products

- lemmy_api (crates.io) SEMVER:introduced=0,last_affected=0.19.1-rc.1

## Related threats

- [Lemmy information disclosure in private community API views](https://junglewise.ai/threats/lemmy-information-disclosure-in-private-community-api-views-57e7e4db)
- [Lemmy missing authorization in read_multi_community API](https://junglewise.ai/threats/lemmy-missing-authorization-in-read-multi-community-api-4056bf6e)