What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-29 · updated 2026-09-10
• Weakness: CWE-918

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.

Affected products

• usememos/memos: through 0.30.0

References

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

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