CVE-2026-19956

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreHIGH confidence

Score 6.3 from GitHub Security Advisory published 2026-08-16. a secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: None knownExposed: 0

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

A vulnerability has been found in gomarble-ai facebook-ads-mcp-server 0.1.0. The impacted element is the function fetch_pagination_url of the file server.py. Such manipulation leads to server-side request forgery. The attack can be launched remotely. The name of the patch is 4e53875aa22e8991c2fa4a7660d86e1caba66659. Applying a patch is advised to resolve this issue.

CVSS v3
6.3
EG Score
6.3(high)
EG Risk
33(Track)
EG Risk 33/100SSVC: Track

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
Severity63% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

August 16, 2026

Last Modified

August 20, 2026

Advisory Details (4)

Auto-updated Aug 16, 2026
🔬 Proof of concept available. Upstream fix merged — awaiting tagged release. Sources: github_pr, github_commit.
generic

GitHub - gomarble-ai/facebook-ads-mcp-server · GitHub

https://github.com/gomarble-ai/facebook-ads-mcp-server/
github_commit

commit 4e53875aa22e (gomarble-ai/facebook-ads-mcp-server)

Fix landed in gomarble-ai/facebook-ads-mcp-server commit 4e53875aa22e — awaiting tagged release

https://github.com/gomarble-ai/facebook-ads-mcp-server/commit/4e53875aa22e8991c2fa4a7660d86e1caba66659
github_pr

fix: prevent SSRF in pagination fetcher

Fix merged in gomarble-ai/facebook-ads-mcp-server PR #32 on 2026-07-20 — awaiting tagged release

https://github.com/gomarble-ai/facebook-ads-mcp-server/pull/32
generic🟡 PoC Available

SSRF in fetch_pagination_url — facebook-ads-mcp-server · Issue #29 · gomarble-ai/facebook-ads-mcp-server · GitHub

https://github.com/gomarble-ai/facebook-ads-mcp-server/issues/29

Vendor Advisories for CVE-2026-19956(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 14× in last 7d / 14× 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. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 13:00 UTCGHSA enrichment
  3. 2026-08-19 20:18 UTCEG score recompute
  4. 2026-08-19 20:18 UTCGHSA enrichment
  5. 2026-08-19 17:03 UTCEPSS rescore
  6. 2026-08-18 18:53 UTCEG score recompute
  7. 2026-08-18 18:53 UTCGHSA enrichment
  8. 2026-08-18 13:48 UTCEPSS rescore
  9. 2026-08-17 17:27 UTCEG score recompute
  10. 2026-08-17 17:27 UTCGHSA enrichment
  11. 2026-08-17 13:47 UTCEPSS rescore
  12. 2026-08-16 21:23 UTCEG score recompute
  13. 2026-08-16 20:27 UTCEG score recompute
  14. 2026-08-16 20:26 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-19956?
CVE-2026-19956 is a medium vulnerability published on August 16, 2026. A vulnerability has been found in gomarble-ai facebook-ads-mcp-server 0.1.0. The impacted element is the function fetchpaginationurl of the file server.py. Such manipulation leads to server-side request forgery. The attack can be launched remotely. The name of the patch is…
When was CVE-2026-19956 disclosed?
CVE-2026-19956 was first published in the National Vulnerability Database on August 16, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19956 actively exploited?
CVE-2026-19956 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 87.9% of all scored CVEs.
What is the CVSS score of CVE-2026-19956?
CVE-2026-19956 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-19956?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19956, 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.

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