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: 0.7%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
9.8CRITICALmedium confidence
EG Risk
59
EG Risk 59/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.7%
EPSS %ILE
51st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 18, 2026

Last Modified

September 2, 2026

Advisory Details (2)

Auto-updated Sep 30, 2026
Fix named in the CVE record.
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

Pony Mail

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 37× in last 7d / 194× 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 333 total refreshes for this CVE.

  1. 2026-10-05 11:50 UTCGHSA enrichment
  2. 2026-10-05 06:21 UTCGHSA enrichment
  3. 2026-10-05 01:57 UTCEG score recompute
  4. 2026-10-05 01:57 UTCGHSA enrichment
  5. 2026-10-04 23:22 UTCEPSS rescore
  6. 2026-10-04 21:46 UTCGHSA enrichment
  7. 2026-10-04 16:23 UTCGHSA enrichment
  8. 2026-10-04 11:43 UTCGHSA enrichment
  9. 2026-10-04 07:02 UTCGHSA enrichment
  10. 2026-10-04 03:13 UTCGHSA enrichment
  11. 2026-10-03 21:35 UTCGHSA enrichment
  12. 2026-10-03 17:44 UTCEG score recompute
  13. 2026-10-03 17:44 UTCGHSA enrichment
  14. 2026-10-03 14:25 UTCEPSS rescore
  15. 2026-10-03 00:45 UTCGHSA enrichment
  16. 2026-10-02 19:33 UTCEG score recompute
  17. 2026-10-02 19:33 UTCGHSA enrichment
  18. 2026-10-02 15:43 UTCGHSA enrichment
  19. 2026-10-02 06:55 UTCGHSA enrichment
  20. 2026-10-02 01:32 UTCEG score recompute
  21. 2026-10-02 01:32 UTCGHSA enrichment
  22. 2026-10-01 19:49 UTCEPSS rescore
  23. 2026-10-01 13:33 UTCGHSA enrichment
  24. 2026-10-01 09:43 UTCGHSA enrichment
  25. 2026-10-01 05:48 UTCGHSA enrichment
Show 75 more
  1. 2026-10-01 01:30 UTCGHSA enrichment
  2. 2026-09-30 20:51 UTCEG score recompute
  3. 2026-09-30 20:51 UTCGHSA enrichment
  4. 2026-09-30 15:03 UTCEPSS rescore
  5. 2026-09-30 09:56 UTCEG score recompute
  6. 2026-09-30 09:56 UTCGHSA enrichment
  7. 2026-09-29 06:13 UTCGHSA enrichment
  8. 2026-09-29 02:24 UTCGHSA enrichment
  9. 2026-09-28 21:58 UTCEG score recompute
  10. 2026-09-28 21:58 UTCGHSA enrichment
  11. 2026-09-28 13:51 UTCEPSS rescore
  12. 2026-09-28 12:57 UTCGHSA enrichment
  13. 2026-09-28 09:07 UTCGHSA enrichment
  14. 2026-09-28 05:17 UTCGHSA enrichment
  15. 2026-09-28 01:27 UTCGHSA enrichment
  16. 2026-09-27 21:36 UTCGHSA enrichment
  17. 2026-09-27 16:23 UTCEG score recompute
  18. 2026-09-27 16:23 UTCGHSA enrichment
  19. 2026-09-27 13:48 UTCEPSS rescore
  20. 2026-09-27 12:22 UTCGHSA enrichment
  21. 2026-09-27 08:03 UTCEG score recompute
  22. 2026-09-27 08:03 UTCGHSA enrichment
  23. 2026-09-26 15:58 UTCEPSS rescore
  24. 2026-09-26 00:26 UTCEPSS rescore
  25. 2026-09-25 09:26 UTCGHSA enrichment
  26. 2026-09-25 05:36 UTCGHSA enrichment
  27. 2026-09-25 01:46 UTCGHSA enrichment
  28. 2026-09-24 16:09 UTCEG score recompute
  29. 2026-09-24 16:09 UTCGHSA enrichment
  30. 2026-09-24 11:50 UTCGHSA enrichment
  31. 2026-09-24 07:59 UTCGHSA enrichment
  32. 2026-09-24 04:08 UTCGHSA enrichment
  33. 2026-09-24 00:16 UTCGHSA enrichment
  34. 2026-09-23 20:26 UTCEG score recompute
  35. 2026-09-23 20:26 UTCGHSA enrichment
  36. 2026-09-23 15:53 UTCGHSA enrichment
  37. 2026-09-23 12:03 UTCGHSA enrichment
  38. 2026-09-23 08:13 UTCGHSA enrichment
  39. 2026-09-23 04:23 UTCGHSA enrichment
  40. 2026-09-23 00:30 UTCGHSA enrichment
  41. 2026-09-22 20:37 UTCEG score recompute
  42. 2026-09-22 20:36 UTCGHSA enrichment
  43. 2026-09-22 14:04 UTCGHSA enrichment
  44. 2026-09-22 10:14 UTCGHSA enrichment
  45. 2026-09-22 06:24 UTCGHSA enrichment
  46. 2026-09-22 02:21 UTCGHSA enrichment
  47. 2026-09-21 22:28 UTCEG score recompute
  48. 2026-09-21 22:28 UTCGHSA enrichment
  49. 2026-09-21 18:36 UTCGHSA enrichment
  50. 2026-09-21 13:54 UTCGHSA enrichment
  51. 2026-09-21 10:01 UTCGHSA enrichment
  52. 2026-09-21 06:11 UTCGHSA enrichment
  53. 2026-09-21 02:20 UTCGHSA enrichment
  54. 2026-09-20 22:29 UTCEG score recompute
  55. 2026-09-20 22:29 UTCGHSA enrichment
  56. 2026-09-20 20:15 UTCEPSS rescore
  57. 2026-09-20 18:38 UTCGHSA enrichment
  58. 2026-09-20 14:11 UTCGHSA enrichment
  59. 2026-09-20 09:44 UTCGHSA enrichment
  60. 2026-09-20 02:43 UTCGHSA enrichment
  61. 2026-09-19 22:52 UTCGHSA enrichment
  62. 2026-09-19 18:47 UTCEG score recompute
  63. 2026-09-19 18:47 UTCGHSA enrichment
  64. 2026-09-19 14:47 UTCGHSA enrichment
  65. 2026-09-19 10:57 UTCGHSA enrichment
  66. 2026-09-19 05:36 UTCGHSA enrichment
  67. 2026-09-19 01:45 UTCGHSA enrichment
  68. 2026-09-18 21:54 UTCEG score recompute
  69. 2026-09-18 21:54 UTCGHSA enrichment
  70. 2026-09-18 19:28 UTCEPSS rescore
  71. 2026-09-18 19:28 UTCEPSS rescore
  72. 2026-09-18 17:10 UTCGHSA enrichment
  73. 2026-09-18 13:16 UTCGHSA enrichment
  74. 2026-09-18 09:26 UTCGHSA enrichment
  75. 2026-09-18 05:33 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 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 0.7% probability of exploitation in the next 30 days (51st percentile of EPSS-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?
A fix for CVE-2026-34884 is available — its CVE record says: "Users are recommended to upgrade to version 0.2.0, which fixes this issue." The vendor advisories EchelonGraph has for CVE-2026-34884 are linked in the Vendor Advisories panel on this page.

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