CVE-2026-19957

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreHIGH confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-08-17. a secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this weekElevated
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: Elevated riskExposed: 0

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

A vulnerability was identified in graphlit graphlit-mcp-server 1.0.1. This affects the function fetch of the file src/tools.ts of the component ssrf-test Endpoint. Such manipulation of the argument url leads to server-side request forgery. The attack may be launched remotely. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.

CVSS v3
6.3
EG Score
6.3(high)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

August 16, 2026

Last Modified

August 20, 2026

Advisory Details (2)

Auto-updated Aug 16, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

GitHub - graphlit/graphlit-mcp-server: Model Context Protocol (MCP) Server for Graphlit Platform · GitHub

https://github.com/graphlit/graphlit-mcp-server/
generic🟡 PoC Available

SSRF in graphlit-mcp-server retrieveImages via Unvalidated Local fetch() on User-Controlled URL · Issue #12 · graphlit/graphlit-mcp-server · GitHub

https://github.com/graphlit/graphlit-mcp-server/issues/12

Vendor Advisories for CVE-2026-19957(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 20× in last 7d / 20× 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 UTCEG score recompute
  3. 2026-08-20 13:00 UTCGHSA enrichment
  4. 2026-08-19 17:03 UTCEPSS rescore
  5. 2026-08-19 16:15 UTCEG score recompute
  6. 2026-08-19 16:15 UTCGHSA enrichment
  7. 2026-08-18 15:18 UTCEG score recompute
  8. 2026-08-18 15:18 UTCGHSA enrichment
  9. 2026-08-18 15:18 UTCNVD updateCVSS v4 → 2.1
  10. 2026-08-18 14:51 UTCEG score recompute
  11. 2026-08-18 14:51 UTCGHSA enrichment
  12. 2026-08-18 14:20 UTCMITRE cvelistV5CVSS v4 → 5.3
  13. 2026-08-18 13:48 UTCEPSS rescore
  14. 2026-08-17 23:15 UTCEG score recompute
  15. 2026-08-17 23:15 UTCGHSA enrichment
  16. 2026-08-17 13:47 UTCEPSS rescore
  17. 2026-08-16 22:25 UTCEG score recompute
  18. 2026-08-16 22:24 UTCNVD updateCVSS v4 → 2.1
  19. 2026-08-16 22:07 UTCEG score recompute
  20. 2026-08-16 22:06 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-19957?
CVE-2026-19957 is a medium vulnerability published on August 16, 2026. A vulnerability was identified in graphlit graphlit-mcp-server 1.0.1. This affects the function fetch of the file src/tools.ts of the component ssrf-test Endpoint. Such manipulation of the argument url leads to server-side request forgery. The attack may be launched remotely. The exploit is…
When was CVE-2026-19957 disclosed?
CVE-2026-19957 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-2026-19957 actively exploited?
CVE-2026-19957 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 80.7% of all scored CVEs.
What is the CVSS score of CVE-2026-19957?
CVE-2026-19957 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-19957?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19957, 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

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