# lemmy.

Every CVE that names lemmy among its affected products, newest first. Vendors and products are as the CNA wrote them.

## Records, newest first

- [Lemmy: Rate limit bypass via X-Forwarded-For header spoofing in actix-web ConnectionInfo](https://agentprime.io/advisories/CVE-2026-54738.md)
  `CVE-2026-54738` · CVE record: LemmyNet lemmy · CVSS 6.5 Medium · Not analysed yet · Published 19 Aug 2026 · Tags: CWE-799
- [Lemmy: Stored XSS via markdown image alt-text in lemmy-ui html5-embed](https://agentprime.io/advisories/CVE-2026-54743.md)
  `CVE-2026-54743` · CVE record: LemmyNet lemmy · CVSS 6.4 Medium · Not analysed yet · Published 19 Aug 2026 · Tags: Cross-site scripting (XSS)
- [Lemmy: Login Endpoint User Enumeration via HTTP Response Code Differential](https://agentprime.io/advisories/CVE-2026-54739.md)
  `CVE-2026-54739` · CVE record: LemmyNet lemmy · CVSS 6.9 Medium · Not analysed yet · Published 19 Aug 2026 · Tags: CWE-204
- [Lemmy: Lower-ranked federated moderator can remove higher-ranked moderators](https://agentprime.io/advisories/CVE-2026-54740.md)
  `CVE-2026-54740` · CVE record: LemmyNet lemmy · CVSS 6.5 Medium · Not analysed yet · Published 19 Aug 2026 · Tags: Broken access control
- [Lemmy: Blocked users can edit private messages sent before the block](https://agentprime.io/advisories/CVE-2026-54741.md)
  `CVE-2026-54741` · CVE record: LemmyNet lemmy · CVSS 5.3 Medium · Not analysed yet · Published 19 Aug 2026 · Tags: Broken access control
- [Lemmy: \`CollectionAdd::Featured\` does not check the post is in the community](https://agentprime.io/advisories/CVE-2026-54742.md)
  `CVE-2026-54742` · CVE record: LemmyNet lemmy · CVSS 5.1 Medium · Not analysed yet · Published 19 Aug 2026 · Tags: Broken access control

## Filters and formats

Filters are query parameters on this URL: `q` (words, as in a web search engine: `"a phrase"`, `OR`, `-word`; an id; a package or product name), `severity` (low, medium, high or critical), `critical=1`, `kev=1`, `ecosystem` (npm, pypi, packagist, go, maven, rubygems, crates, nuget, hex), `kind=package`, `assigner` (a CNA’s short name), `min_score` and `state`. Each record’s title links to its Markdown page.

- The same list as JSON: <https://api.agentprime.io/v1/advisories?technology=lemmy>
- Every list: <https://agentprime.io/advisories.md>, critical: <https://agentprime.io/advisories/critical.md>; by weakness: <https://agentprime.io/advisories/tag/sql-injection.md> and the other tags in <https://agentprime.io/llms.txt>; by technology: `/advisories/technology/<slug>.md` (`fortinet-fortimail`)

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The web page: <https://agentprime.io/advisories/technology/lemmy/>. Everything for agents: <https://agentprime.io/llms.txt>.