CVE-2026-12798

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreHIGH confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-06-21. a secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.3Exploit: NoneExposed: 0

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

A weakness has been identified in BerriAI litellm up to 1.82.2. Affected by this vulnerability is the function load_openapi_spec_async of the file litellm/proxy/_experimental/mcp_server/openapi_to_mcp_generator.py of the component MCP OpenAPI Spec Loader. This manipulation of the argument spec_path causes server-side request forgery. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.

CVSS v3
6.3
EG Score
6.3(high)
EPSS
17.6%
KEV
Not listed

Published

June 21, 2026

Last Modified

June 24, 2026

Advisory Details (1)

Auto-updated Jun 21, 2026
No patch confirmed yet.
generic

SSRF via Unvalidated spec_path URL in MCP OpenAPI Spec Loader · GitHub

https://gist.github.com/YLChen-007/c1104c529975699ba347feedfbe02c5a

Vendor Advisories for CVE-2026-12798(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 / 52× 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. 2026-07-07 01:46 UTCEG score recompute
  2. 2026-07-07 01:45 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 03:48 UTCEG score recompute
  5. 2026-07-06 03:48 UTCGHSA enrichment
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 05:51 UTCEG score recompute
  8. 2026-07-05 05:51 UTCGHSA enrichment
  9. 2026-07-05 02:30 UTCEPSS rescore
  10. 2026-07-05 02:30 UTCEPSS rescore
  11. 2026-07-04 07:48 UTCEG score recompute
  12. 2026-07-04 07:48 UTCGHSA enrichment
  13. 2026-07-04 06:31 UTCEPSS rescore
  14. 2026-07-03 09:03 UTCEG score recompute
  15. 2026-07-03 09:03 UTCGHSA enrichment
  16. 2026-07-02 11:06 UTCEG score recompute
  17. 2026-07-02 11:06 UTCGHSA enrichment
  18. 2026-07-01 15:06 UTCEPSS rescore
  19. 2026-07-01 15:06 UTCEPSS rescore
  20. 2026-07-01 12:52 UTCEG score recompute
  21. 2026-07-01 12:52 UTCGHSA enrichment
  22. 2026-06-30 23:22 UTCEPSS rescore
  23. 2026-06-30 14:55 UTCEG score recompute
  24. 2026-06-30 14:55 UTCGHSA enrichment
  25. 2026-06-29 16:50 UTCEG score recompute
Show 27 more
  1. 2026-06-29 16:50 UTCGHSA enrichment
  2. 2026-06-29 14:06 UTCEPSS rescore
  3. 2026-06-28 18:50 UTCEG score recompute
  4. 2026-06-28 18:50 UTCGHSA enrichment
  5. 2026-06-28 14:07 UTCEPSS rescore
  6. 2026-06-28 04:56 UTCEPSS rescore
  7. 2026-06-28 04:56 UTCEPSS rescore
  8. 2026-06-27 20:53 UTCEG score recompute
  9. 2026-06-27 20:53 UTCGHSA enrichment
  10. 2026-06-27 03:08 UTCEPSS rescore
  11. 2026-06-26 22:56 UTCEG score recompute
  12. 2026-06-26 22:56 UTCGHSA enrichment
  13. 2026-06-26 00:59 UTCEG score recompute
  14. 2026-06-26 00:58 UTCGHSA enrichment
  15. 2026-06-25 13:49 UTCEPSS rescore
  16. 2026-06-25 03:00 UTCEG score recompute
  17. 2026-06-25 03:00 UTCGHSA enrichment
  18. 2026-06-24 14:05 UTCEPSS rescore
  19. 2026-06-24 05:03 UTCEG score recompute
  20. 2026-06-24 05:02 UTCGHSA enrichment
  21. 2026-06-23 21:32 UTCEPSS rescore
  22. 2026-06-23 07:04 UTCEG score recompute
  23. 2026-06-23 07:04 UTCGHSA enrichment
  24. 2026-06-22 09:07 UTCEG score recompute
  25. 2026-06-22 09:07 UTCGHSA enrichment
  26. 2026-06-21 11:09 UTCEG score recompute
  27. 2026-06-21 11:07 UTCNVD updatefirst tracked

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Frequently asked(5)

What is CVE-2026-12798?
CVE-2026-12798 is a medium vulnerability published on June 21, 2026. A weakness has been identified in BerriAI litellm up to 1.82.2. Affected by this vulnerability is the function loadopenapispecasync of the file litellm/proxy/experimental/mcpserver/openapitomcpgenerator.py of the component MCP OpenAPI Spec Loader. This manipulation of the argument spec_path causes…
When was CVE-2026-12798 disclosed?
CVE-2026-12798 was first published in the National Vulnerability Database on June 21, 2026, with the most recent update on June 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12798 actively exploited?
CVE-2026-12798 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 17.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-12798?
CVE-2026-12798 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-12798?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12798, 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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