CVE-2026-19765

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreHIGH confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-08-14. 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 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 security flaw has been discovered in eyaushev swagger-testcase-mcp 5babb27c951fb404bc2b25ec80593616e49054e5. This vulnerability affects the function loadSource of the file src/utils/swagger-parser.ts of the component fetch_swagger. Performing a manipulation results in server-side request forgery. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. This product adopts a rolling release strategy to maintain continuous delivery. Therefore, version details for affected or updated releases cannot be specified. 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
11%
KEV
Not listed

Published

August 14, 2026

Last Modified

August 18, 2026

Advisory Details (2)

Auto-updated Aug 14, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

swagger-testcase-mcp SSRF in OpenAPI Spec Loading · Issue #1 · eyaushev/swagger-testcase-mcp · GitHub

https://github.com/eyaushev/swagger-testcase-mcp/issues/1
generic

GitHub - eyaushev/swagger-testcase-mcp: MCP server for API testing: generates test cases, validates specs, compares versions, and creates mock data from Swagger/OpenAPI specifications · GitHub

https://github.com/eyaushev/swagger-testcase-mcp/

Vendor Advisories for CVE-2026-19765(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 24× in last 7d / 28× 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 15:40 UTCEG score recompute
  3. 2026-08-20 15:40 UTCGHSA enrichment
  4. 2026-08-19 17:03 UTCEPSS rescore
  5. 2026-08-19 15:20 UTCEG score recompute
  6. 2026-08-19 15:20 UTCGHSA enrichment
  7. 2026-08-18 14:52 UTCEG score recompute
  8. 2026-08-18 14:52 UTCGHSA enrichment
  9. 2026-08-18 13:51 UTCEG score recompute
  10. 2026-08-18 13:51 UTCGHSA enrichment
  11. 2026-08-18 13:48 UTCEPSS rescore
  12. 2026-08-18 13:45 UTCMITRE cvelistV5CVSS v4 → 5.3
  13. 2026-08-17 20:18 UTCEG score recompute
  14. 2026-08-17 20:18 UTCGHSA enrichment
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-16 19:58 UTCEG score recompute
  17. 2026-08-16 19:58 UTCGHSA enrichment
  18. 2026-08-16 14:56 UTCEPSS rescore
  19. 2026-08-16 02:14 UTCEPSS rescore
  20. 2026-08-15 19:37 UTCEG score recompute
  21. 2026-08-15 19:37 UTCGHSA enrichment
  22. 2026-08-15 01:30 UTCEPSS rescore
  23. 2026-08-14 19:16 UTCEG score recompute
  24. 2026-08-14 19:16 UTCGHSA enrichment
  25. 2026-08-14 01:24 UTCEG score recompute
Show 3 more
  1. 2026-08-14 01:24 UTCNVD updateCVSS v4 → 2.1
  2. 2026-08-14 01:18 UTCEG score recompute
  3. 2026-08-14 01:18 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19765?
CVE-2026-19765 is a medium vulnerability published on August 14, 2026. A security flaw has been discovered in eyaushev swagger-testcase-mcp 5babb27c951fb404bc2b25ec80593616e49054e5. This vulnerability affects the function loadSource of the file src/utils/swagger-parser.ts of the component fetch_swagger. Performing a manipulation results in server-side request forgery.…
When was CVE-2026-19765 disclosed?
CVE-2026-19765 was first published in the National Vulnerability Database on August 14, 2026, with the most recent update on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19765 actively exploited?
CVE-2026-19765 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 88.6% of all scored CVEs.
What is the CVSS score of CVE-2026-19765?
CVE-2026-19765 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-19765?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19765, 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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