CVE-2026-34884

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-18. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

SSRF via set_skywalking_url Tool and GraphQL expression injection vulnerability in Apache SkyWalking MCP.

This issue affects Apache SkyWalking MCP: 0.1.0.

Users are recommended to upgrade to version 0.2.0, which fixes this issue.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
51%
KEV
Not listed

Published

August 18, 2026

Last Modified

September 2, 2026

Advisory Details (2)

Auto-updated Sep 16, 2026
No patch confirmed yet.
generic

oss-security - CVE-2026-34884: Apache SkyWalking MCP: SSRF via set_skywalking_url Tool and GraphQL Expression Injection in MCP Server

http://www.openwall.com/lists/oss-security/2026/04/13/5
generic
https://lists.apache.org/thread/s447p6h5dfr02lx17v27phoksgb8mkkp

Vendor Advisories for CVE-2026-34884(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 53× in last 7d / 224× 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.

Showing the most recent 100 of 256 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-34884?
CVE-2026-34884 is a critical vulnerability published on August 18, 2026. SSRF via setskywalkingurl Tool and GraphQL expression injection vulnerability in Apache SkyWalking MCP. This issue affects Apache SkyWalking MCP: 0.1.0. Users are recommended to upgrade to version 0.2.0, which fixes this issue.
When was CVE-2026-34884 disclosed?
CVE-2026-34884 was first published in the National Vulnerability Database on August 18, 2026, with the most recent update on September 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34884 actively exploited?
CVE-2026-34884 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 49.1% of all scored CVEs.
What is the CVSS score of CVE-2026-34884?
CVE-2026-34884 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-34884?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-34884, 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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