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TI-2026-56869 Aliases CVE-2026-82476GHSA-rw55-gcm9-cgjp

Memos through 0.30.0 SSRF via Omitted CGNAT Address Range

Priority HIGH 70CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00427 37th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
usememosmemosup to 0.30.0—No fix listedCNA
  • memos Vendorusememos Affected up to 0.30.0 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:usememos:memos:*:*:*:*:*:*:*:*——usememos
  • cpe:2.3:a:usememos:memos:*:*:*:*:*:*:*:* Versions — — ·usememos

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-82476
  2. 2026-10-03 Alias added: GHSA-rw55-gcm9-cgjp

References

Other 3

  • TI-2025-32234 The Memos application, up to version v0.24.3, allows for the embedding of markdown images… CVSS 3.1CRITICAL 9.8
  • TI-2025-16796 elestio memos v0.23.0 is vulnerable to Server-Side Request Forgery (SSRF) due to… CVSS 3.1CRITICAL 9.8
  • TI-2023-04328 Improper Access Control in usememos/memos CVSS 3.1CRITICAL 9.8
  • TI-2022-04459 Cross-site Scripting (XSS) - Stored in usememos/memos CVSS 3.1CRITICAL 9.0
  • TI-2022-04458 Cross-site Scripting (XSS) - Stored in usememos/memos CVSS 3.1CRITICAL 9.0
  • TI-2022-04283 Authorization Bypass Through User-Controlled Key in usememos/memos CVSS 3.1CRITICAL 9.8
See all 78 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences