CVE-2026-82476

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-08-29. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
55(Attend)
EG Risk 55/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

August 29, 2026

Last Modified

September 10, 2026

Advisory Details (4)

Auto-updated Aug 29, 2026
No patch confirmed yet.
generic

Memos through 0.30.0 SSRF via Omitted CGNAT Address Range | Advisories | VulnCheck

https://www.vulncheck.com/advisories/memos-through-0.30.0-ssrf-via-omitted-cgnat-address-range
generic

GitHub - usememos/memos: Open-source, self-hosted note-taking tool built for quick capture. Markdown-native, lightweight, and fully yours. · GitHub

https://github.com/usememos/memos
generic

memos/internal/httpgetter/html_meta.go at v0.30.0 · usememos/memos · GitHub

https://github.com/usememos/memos/blob/v0.30.0/internal/httpgetter/html_meta.go
generic

unauthenticated CGNAT/cloud-metadata SSRF (incomplete fix of CVE-2024-29028 / CVE-2025-22952) · Issue #6099 · usememos/memos · GitHub

https://github.com/usememos/memos/issues/6099

Vendor Advisories for CVE-2026-82476(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 17× in last 7d / 62× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-20 09:26 UTCEG score recompute
  3. 2026-09-20 09:26 UTCGHSA enrichment
  4. 2026-09-19 07:30 UTCEG score recompute
  5. 2026-09-19 07:30 UTCGHSA enrichment
  6. 2026-09-18 19:28 UTCEPSS rescore
  7. 2026-09-18 05:34 UTCEG score recompute
  8. 2026-09-18 05:34 UTCGHSA enrichment
  9. 2026-09-17 03:38 UTCEG score recompute
  10. 2026-09-17 03:38 UTCGHSA enrichment
  11. 2026-09-16 14:08 UTCEPSS rescore
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-16 01:42 UTCEG score recompute
  14. 2026-09-16 01:42 UTCGHSA enrichment
  15. 2026-09-15 03:12 UTCEPSS rescore
  16. 2026-09-15 03:12 UTCEPSS rescore
  17. 2026-09-14 23:46 UTCGHSA enrichment
  18. 2026-09-13 21:50 UTCEG score recompute
  19. 2026-09-13 21:50 UTCGHSA enrichment
  20. 2026-09-12 19:54 UTCEG score recompute
  21. 2026-09-12 19:54 UTCGHSA enrichment
  22. 2026-09-11 17:58 UTCEG score recompute
  23. 2026-09-11 17:58 UTCGHSA enrichment
  24. 2026-09-11 14:53 UTCEPSS rescore
  25. 2026-09-11 14:53 UTCEPSS rescore
Show 37 more
  1. 2026-09-10 16:02 UTCGHSA enrichment
  2. 2026-09-10 14:12 UTCEG score recompute
  3. 2026-09-10 14:12 UTCGHSA enrichment
  4. 2026-09-09 12:16 UTCEG score recompute
  5. 2026-09-09 12:16 UTCGHSA enrichment
  6. 2026-09-08 22:01 UTCEPSS rescore
  7. 2026-09-08 10:21 UTCEG score recompute
  8. 2026-09-08 10:20 UTCGHSA enrichment
  9. 2026-09-07 07:09 UTCEG score recompute
  10. 2026-09-07 07:09 UTCGHSA enrichment
  11. 2026-09-06 13:48 UTCEPSS rescore
  12. 2026-09-06 05:13 UTCEG score recompute
  13. 2026-09-06 05:13 UTCGHSA enrichment
  14. 2026-09-05 15:31 UTCEPSS rescore
  15. 2026-09-05 03:17 UTCEG score recompute
  16. 2026-09-05 03:17 UTCGHSA enrichment
  17. 2026-09-04 05:07 UTCEPSS rescore
  18. 2026-09-04 01:20 UTCGHSA enrichment
  19. 2026-09-02 23:22 UTCEG score recompute
  20. 2026-09-02 23:22 UTCGHSA enrichment
  21. 2026-09-02 14:12 UTCEPSS rescore
  22. 2026-09-01 21:25 UTCEG score recompute
  23. 2026-09-01 21:25 UTCGHSA enrichment
  24. 2026-09-01 13:54 UTCEPSS rescore
  25. 2026-09-01 04:40 UTCEPSS rescore
  26. 2026-09-01 04:40 UTCEPSS rescore
  27. 2026-08-31 19:29 UTCEG score recompute
  28. 2026-08-31 19:29 UTCGHSA enrichment
  29. 2026-08-31 18:33 UTCEG score recompute
  30. 2026-08-31 18:32 UTCGHSA enrichment
  31. 2026-08-30 19:23 UTCEG score recompute
  32. 2026-08-30 19:23 UTCGHSA enrichment
  33. 2026-08-30 19:18 UTCEPSS rescore
  34. 2026-08-30 19:17 UTCEPSS rescore
  35. 2026-08-29 17:28 UTCEG score recompute
  36. 2026-08-29 16:41 UTCEG score recompute
  37. 2026-08-29 16:37 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-82476?
CVE-2026-82476 is a medium vulnerability published on August 29, 2026. 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…
When was CVE-2026-82476 disclosed?
CVE-2026-82476 was first published in the National Vulnerability Database on August 29, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82476 actively exploited?
CVE-2026-82476 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 82.7% of all scored CVEs.
What is the CVSS score of CVE-2026-82476?
CVE-2026-82476 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-82476?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-82476, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-82476

Explore →

Is Your Infrastructure Affected by CVE-2026-82476?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs