CVE-2026-77822

CRITICALNVD 9.69.6—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.6 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 88% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
9.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.6Exploit: None knownExposed: 0

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

IBM ContextForge MCP Gateway could allow a remote authenticated attacker to obtain sensitive information due to server-side request forgery via DNS rebinding.

CVSS v3
9.6
EG Score
9.6(medium)
EG Risk
43(Track)
EG Risk 43/100SSVC: 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
Severity96% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 15, 2026

Advisory Details (1)

Auto-updated Sep 15, 2026
No patch confirmed yet.
generic

Security Bulletin: IBM ContextForge MCP Gateway is affected by server-side request forgery (DNS rebinding) via the A2A agent invocation endpoint

https://www.ibm.com/support/pages/node/7286055

Vendor Advisories for CVE-2026-77822(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 45× in last 7d / 82× 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. 2026-09-20 02:22 UTCGHSA enrichment
  2. 2026-09-19 22:19 UTCGHSA enrichment
  3. 2026-09-19 18:12 UTCEG score recompute
  4. 2026-09-19 18:11 UTCGHSA enrichment
  5. 2026-09-19 14:03 UTCGHSA enrichment
  6. 2026-09-19 09:55 UTCGHSA enrichment
  7. 2026-09-19 05:33 UTCGHSA enrichment
  8. 2026-09-19 01:30 UTCGHSA enrichment
  9. 2026-09-18 21:22 UTCEG score recompute
  10. 2026-09-18 21:22 UTCGHSA enrichment
  11. 2026-09-18 19:28 UTCEPSS rescore
  12. 2026-09-18 16:39 UTCGHSA enrichment
  13. 2026-09-18 12:36 UTCGHSA enrichment
  14. 2026-09-18 08:33 UTCGHSA enrichment
  15. 2026-09-18 04:29 UTCGHSA enrichment
  16. 2026-09-18 00:26 UTCGHSA enrichment
  17. 2026-09-17 20:23 UTCEG score recompute
  18. 2026-09-17 20:23 UTCGHSA enrichment
  19. 2026-09-17 15:09 UTCGHSA enrichment
  20. 2026-09-17 11:06 UTCGHSA enrichment
  21. 2026-09-17 07:03 UTCGHSA enrichment
  22. 2026-09-17 03:00 UTCGHSA enrichment
  23. 2026-09-16 22:32 UTCGHSA enrichment
  24. 2026-09-16 18:28 UTCEG score recompute
  25. 2026-09-16 18:28 UTCGHSA enrichment
Show 57 more
  1. 2026-09-16 14:08 UTCEPSS rescore
  2. 2026-09-16 13:04 UTCGHSA enrichment
  3. 2026-09-16 09:01 UTCEG score recompute
  4. 2026-09-16 09:01 UTCGHSA enrichment
  5. 2026-09-16 05:15 UTCEPSS rescore
  6. 2026-09-16 03:53 UTCGHSA enrichment
  7. 2026-09-15 23:49 UTCGHSA enrichment
  8. 2026-09-15 19:43 UTCGHSA enrichment
  9. 2026-09-15 15:34 UTCEG score recompute▲ 1.40
  10. 2026-09-15 15:34 UTCGHSA enrichment
  11. 2026-09-15 15:31 UTCNVD updateCVSS v3 → 9.6 · severity → CRITICAL
  12. 2026-09-15 10:31 UTCEG score recompute
  13. 2026-09-15 10:31 UTCGHSA enrichment
  14. 2026-09-15 03:12 UTCEPSS rescore
  15. 2026-09-15 03:12 UTCEPSS rescore
  16. 2026-09-14 23:37 UTCGHSA enrichment
  17. 2026-09-14 12:46 UTCGHSA enrichment
  18. 2026-09-14 01:55 UTCEG score recompute
  19. 2026-09-14 01:55 UTCGHSA enrichment
  20. 2026-09-13 15:04 UTCGHSA enrichment
  21. 2026-09-13 04:12 UTCGHSA enrichment
  22. 2026-09-12 17:20 UTCEG score recompute
  23. 2026-09-12 17:20 UTCGHSA enrichment
  24. 2026-09-12 06:29 UTCGHSA enrichment
  25. 2026-09-11 19:37 UTCEG score recompute
  26. 2026-09-11 19:37 UTCGHSA enrichment
  27. 2026-09-11 14:53 UTCEPSS rescore
  28. 2026-09-11 08:45 UTCGHSA enrichment
  29. 2026-09-10 21:54 UTCGHSA enrichment
  30. 2026-09-10 11:01 UTCEG score recompute
  31. 2026-09-10 11:01 UTCGHSA enrichment
  32. 2026-09-10 09:35 UTCEPSS rescore
  33. 2026-09-09 23:50 UTCGHSA enrichment
  34. 2026-09-09 12:58 UTCGHSA enrichment
  35. 2026-09-09 02:07 UTCEG score recompute
  36. 2026-09-09 02:07 UTCGHSA enrichment
  37. 2026-09-08 22:01 UTCEPSS rescore
  38. 2026-09-08 15:15 UTCGHSA enrichment
  39. 2026-09-08 12:41 UTCGHSA enrichment
  40. 2026-09-08 01:33 UTCEG score recompute
  41. 2026-09-08 01:32 UTCGHSA enrichment
  42. 2026-09-07 14:40 UTCGHSA enrichment
  43. 2026-09-07 01:41 UTCGHSA enrichment
  44. 2026-09-06 14:47 UTCEG score recompute
  45. 2026-09-06 14:47 UTCGHSA enrichment
  46. 2026-09-06 13:48 UTCEPSS rescore
  47. 2026-09-06 03:55 UTCGHSA enrichment
  48. 2026-09-05 17:04 UTCEG score recompute
  49. 2026-09-05 17:03 UTCGHSA enrichment
  50. 2026-09-05 06:11 UTCGHSA enrichment
  51. 2026-09-04 19:19 UTCEG score recompute
  52. 2026-09-04 19:19 UTCGHSA enrichment
  53. 2026-09-04 18:40 UTCEG score recompute
  54. 2026-09-04 18:40 UTCGHSA enrichment
  55. 2026-09-04 16:24 UTCEG score recompute
  56. 2026-09-04 15:29 UTCEG score recompute
  57. 2026-09-04 15:29 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-77822?
CVE-2026-77822 is a critical vulnerability published on September 4, 2026. IBM ContextForge MCP Gateway could allow a remote authenticated attacker to obtain sensitive information due to server-side request forgery via DNS rebinding.
When was CVE-2026-77822 disclosed?
CVE-2026-77822 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-77822 actively exploited?
CVE-2026-77822 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 88.1% of all scored CVEs.
What is the CVSS score of CVE-2026-77822?
CVE-2026-77822 has a CVSS v3 base score of 9.6 (NVD).
How do I remediate CVE-2026-77822?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-77822, 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

Explore the affected products and dependency analysis for CVE-2026-77822

Explore →

Is Your Infrastructure Affected by CVE-2026-77822?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs