CVE-2026-75130

CRITICALPre-NVD 9.09.0
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 9.0 from GitHub Security Advisory published 2026-08-18. A secondary CVSS source baseline 9.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week
9.0EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.0Exploit: None knownExposed services: Not assessed

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

The CVE record's CNA (VulnCheck) lists Uptash Context7 versions up to and including 2.1.2 as affected. No release containing a fix is confirmed on record.

Context7 through 2.1.2 contains a prompt injection vulnerability that allows attackers to execute malicious instructions in connected AI coding agents by injecting unsanitized content through the Custom AI Instructions feature served via the MCP server. Attackers can poison the custom instructions to exfiltrate credentials from environment files to an attacker-controlled service and perform destructive file deletion on the victim's machine when the agent makes a routine library documentation request.

CVSS v3
9.0
EG Score
9.0CRITICALmedium confidence
EG Risk
41
EG Risk 41/100

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 (value × EchelonGraph’s weight)
Severity90% × 45%
The EG Score, 9.0 of 10.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 18, 2026

Last Modified

September 24, 2026

Advisory Details (3)

Auto-updated Aug 18, 2026
No fix on record yet.
Web page

Context7 2.1.2 Prompt Injection via Custom AI Instructions | Advisories | VulnCheck

https://www.vulncheck.com/advisories/context7-prompt-injection-via-custom-ai-instructions
Web page

Context7 Security: AI Agent Vulnerability Mitigation | Upstash posted on the topic | LinkedIn

https://www.linkedin.com/posts/upstash_mcp-server-vulnerability-in-context-7-activity-7435686676049387520-PBVo/
Web page

ContextCrush: The Context7 MCP Server Vulnerability Hiding in Plain Sight - Noma Security

https://noma.security/blog/contextcrush-context7-the-mcp-server-vulnerability/

Vendor Advisories for CVE-2026-75130(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 18× in last 7d / 159× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 348 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 248 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  2. 2026-10-12 21:53 UTCEG score recompute
  3. 2026-10-12 21:53 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  4. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  5. 2026-10-12 15:39 UTCEG score recompute
  6. 2026-10-12 05:36 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  7. 2026-10-11 19:25 UTCEG score recompute
  8. 2026-10-11 16:40 UTCEG score recompute
  9. 2026-10-11 14:00 UTCEG score recompute
  10. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  11. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  13. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  15. 2026-10-07 11:11 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  16. 2026-10-07 06:28 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  17. 2026-10-07 02:15 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  18. 2026-10-06 21:38 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  19. 2026-10-06 17:06 UTCEG score recompute
  20. 2026-10-06 17:06 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  21. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  22. 2026-10-06 12:52 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  23. 2026-10-06 08:21 UTCEG score recompute
  24. 2026-10-06 08:21 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  25. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 39th percentile
Show 75 more
  1. 2026-10-05 17:23 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  2. 2026-10-05 11:42 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  3. 2026-10-05 06:05 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  4. 2026-10-05 01:53 UTCEG score recompute
  5. 2026-10-05 01:53 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  6. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  7. 2026-10-04 21:41 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  8. 2026-10-04 16:16 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  9. 2026-10-04 11:41 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  10. 2026-10-04 07:19 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  11. 2026-10-04 03:10 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  12. 2026-10-03 22:12 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  13. 2026-10-03 17:38 UTCEG score recompute
  14. 2026-10-03 17:38 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  15. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  16. 2026-10-03 00:44 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  17. 2026-10-02 19:18 UTCEG score recompute
  18. 2026-10-02 19:18 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  19. 2026-10-02 15:07 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  20. 2026-10-02 06:53 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  21. 2026-10-02 01:27 UTCEG score recompute
  22. 2026-10-02 01:27 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  23. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  24. 2026-10-01 14:06 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  25. 2026-10-01 09:56 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  26. 2026-10-01 05:47 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  27. 2026-10-01 01:28 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  28. 2026-09-30 20:49 UTCEG score recompute
  29. 2026-09-30 20:49 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  30. 2026-09-30 09:47 UTCEG score recompute
  31. 2026-09-30 09:47 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  32. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  33. 2026-09-29 06:31 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  34. 2026-09-29 02:21 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  35. 2026-09-28 21:55 UTCEG score recompute
  36. 2026-09-28 21:55 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  37. 2026-09-28 13:54 UTCEG score recompute
  38. 2026-09-28 13:54 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  39. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  40. 2026-09-28 09:44 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  41. 2026-09-28 05:34 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  42. 2026-09-28 01:24 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  43. 2026-09-27 21:14 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  44. 2026-09-27 16:29 UTCEG score recompute
  45. 2026-09-27 16:28 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  46. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  47. 2026-09-27 12:19 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  48. 2026-09-27 07:55 UTCEG score recompute
  49. 2026-09-27 07:55 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  50. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  51. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  52. 2026-09-25 09:44 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  53. 2026-09-25 05:34 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  54. 2026-09-25 01:25 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  55. 2026-09-24 20:15 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  56. 2026-09-24 17:09 UTCEG score recompute
  57. 2026-09-24 17:09 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  58. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  59. 2026-09-24 12:59 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  60. 2026-09-24 08:49 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  61. 2026-09-24 04:39 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  62. 2026-09-24 00:29 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  63. 2026-09-23 20:19 UTCEG score recompute
  64. 2026-09-23 20:19 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  65. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  66. 2026-09-23 13:04 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  67. 2026-09-23 08:54 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  68. 2026-09-23 04:44 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  69. 2026-09-23 00:34 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  70. 2026-09-22 20:24 UTCEG score recompute
  71. 2026-09-22 20:24 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  72. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  73. 2026-09-22 15:15 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  74. 2026-09-22 11:06 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0
  75. 2026-09-22 06:55 UTCGHSA enrichmentGHSA-97r6-3rgm-v39r · GitHub CVSS 9.0

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Frequently asked(5)

What is CVE-2026-75130?
CVE-2026-75130 is a critical-severity vulnerability; its CVE record was published on August 18, 2026. Context7 through 2.1.2 contains a prompt injection vulnerability that allows attackers to execute malicious instructions in connected AI coding agents by injecting unsanitized content through the Custom AI Instructions feature served via the MCP server. Attackers can poison the custom instructions…
When was CVE-2026-75130 made public?
CVE-2026-75130 was made public on March 5, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on August 18, 2026. EchelonGraph's copy of the record carries a last-modified date of September 24, 2026; the record at its source may have been updated since.
Is CVE-2026-75130 actively exploited?
CVE-2026-75130 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75130?
CVE-2026-75130 has a CVSS base score of 9.0 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-75130?
No fix for CVE-2026-75130 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (VulnCheck) lists Uptash Context7 versions up to and including 2.1.2 as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-75130 are linked in the Vendor Advisories panel on this page.

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