CVE-2026-81093

HIGHPre-NVD 8.68.6
EchelonGraph scoreMEDIUM confidence

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

Score 8.6 from GitHub Security Advisory (severity: HIGH) published 2026-08-27. A secondary CVSS source baseline 8.6; 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
8.6EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 8.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

The get-html-skeleton tool fetched a URL the caller supplied after checking only its syntax. The handler in src/tools/common/get_html_skeleton.ts validated the url argument with isValidHttpUrl from src/utils/generic.ts, which confirmed the string began with an http or https scheme and parsed as a URL and inspected neither the host name nor the address it resolves to. Loopback, link-local and private ranges therefore passed, including the address cloud providers use to serve instance metadata. The unchecked URL was handed to the web-browser actor and the fetched document was returned in the tool response, so any caller of the MCP server could make it request an endpoint reachable only from the host and read the result, including instance credentials. Version 0.9.12 removes the tool.

CVSS v3
8.6
EG Score
8.6HIGHmedium confidence
EG Risk
54
EG Risk 54/100

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)
Severity86% × 45%
The EG Score, 8.6 of 10.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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: 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
0.5%
EPSS %ILE
42nd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track 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 partial (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; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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 27, 2026

Last Modified

September 24, 2026

Advisory Details (3)

Auto-updated Aug 27, 2026
Patch available. Sources: github_pr.
Web page

Apify Actors MCP Server before 0.9.12 Server-Side Request Forgery via get-html-skeleton | Advisories | VulnCheck

https://www.vulncheck.com/advisories/apify-actors-mcp-server-before-0.9.12-server-side-request-forgery-via-get-html-skeleton
GitHub pull request Patch Available

fix: Drop Node.js requirement from 22 to 18 and remove cheerio dependency

Patch available: apify/apify-mcp-server v0.10.1 (PR #572 merged 2026-03-19)

https://github.com/apify/apify-mcp-server/pull/572
Web page

GitHub - apify/apify-mcp-server: The Apify MCP server enables your AI agents to extract data from social media, search engines, maps, e-commerce sites, or any other website using thousands of ready-made scrapers, crawlers, and automation tools available on the Apify Store. · GitHub

https://github.com/apify/apify-mcp-server

Vendor Advisories for CVE-2026-81093(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 20× in last 7d / 112× 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 189 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 89 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% · 42nd percentile
  2. 2026-10-13 06:23 UTCEG score recompute
  3. 2026-10-13 06:22 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  4. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  5. 2026-10-12 14:57 UTCEG score recompute
  6. 2026-10-11 19:20 UTCEG score recompute
  7. 2026-10-11 16:37 UTCEG score recompute
  8. 2026-10-11 13:55 UTCEG score recompute
  9. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  11. 2026-10-10 12:59 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  12. 2026-10-10 01:56 UTCEG score recompute
  13. 2026-10-10 01:55 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  14. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  15. 2026-10-09 03:08 UTCEG score recompute
  16. 2026-10-09 03:07 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  17. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  18. 2026-10-08 01:20 UTCEG score recompute
  19. 2026-10-08 01:20 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  20. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  21. 2026-10-07 09:54 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  22. 2026-10-06 22:40 UTCEG score recompute
  23. 2026-10-06 22:40 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  24. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  25. 2026-10-06 11:47 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
Show 75 more
  1. 2026-10-06 00:54 UTCEG score recompute
  2. 2026-10-06 00:54 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  3. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  4. 2026-10-05 12:19 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  5. 2026-10-05 01:23 UTCEG score recompute
  6. 2026-10-05 01:23 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  7. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  8. 2026-10-04 13:49 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  9. 2026-10-04 02:56 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  10. 2026-10-03 16:03 UTCEG score recompute
  11. 2026-10-03 16:02 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  12. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  13. 2026-10-03 04:34 UTCEG score recompute
  14. 2026-10-03 04:34 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  15. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  16. 2026-10-02 17:40 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  17. 2026-10-02 06:46 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  18. 2026-10-01 19:53 UTCEG score recompute
  19. 2026-10-01 19:53 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  20. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  21. 2026-10-01 06:53 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  22. 2026-09-30 19:55 UTCEG score recompute
  23. 2026-09-30 19:55 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  24. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  25. 2026-09-30 05:03 UTCEG score recompute
  26. 2026-09-30 05:03 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  27. 2026-09-29 12:24 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  28. 2026-09-29 01:31 UTCEG score recompute
  29. 2026-09-29 01:31 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  30. 2026-09-28 14:37 UTCEG score recompute
  31. 2026-09-28 14:37 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  32. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  33. 2026-09-28 03:44 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  34. 2026-09-27 16:42 UTCEG score recompute
  35. 2026-09-27 16:42 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  36. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  37. 2026-09-27 05:49 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  38. 2026-09-26 18:45 UTCEG score recompute
  39. 2026-09-26 18:45 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  40. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  41. 2026-09-25 08:08 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  42. 2026-09-24 21:14 UTCEG score recompute
  43. 2026-09-24 21:14 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  44. 2026-09-24 18:46 UTCEG score recompute
  45. 2026-09-24 18:46 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  46. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  47. 2026-09-24 06:48 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  48. 2026-09-23 19:54 UTCEG score recompute
  49. 2026-09-23 19:54 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  50. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  51. 2026-09-23 08:05 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  52. 2026-09-22 21:12 UTCEG score recompute
  53. 2026-09-22 21:12 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  54. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  55. 2026-09-22 10:18 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  56. 2026-09-21 23:25 UTCEG score recompute
  57. 2026-09-21 23:25 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  58. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  59. 2026-09-21 12:32 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  60. 2026-09-21 01:37 UTCEG score recompute
  61. 2026-09-21 01:37 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  62. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  63. 2026-09-20 14:15 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  64. 2026-09-20 03:21 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  65. 2026-09-19 16:28 UTCEG score recompute
  66. 2026-09-19 16:28 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  67. 2026-09-19 05:34 UTCEG score recompute
  68. 2026-09-19 05:34 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  69. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  70. 2026-09-18 18:41 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  71. 2026-09-18 07:48 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  72. 2026-09-17 20:55 UTCEG score recompute
  73. 2026-09-17 20:55 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  74. 2026-09-17 08:25 UTCGHSA enrichmentGHSA-gghj-77w7-6r3h · GitHub severity HIGH · GitHub CVSS 8.6
  75. 2026-09-16 21:30 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-81093?
CVE-2026-81093 is a high-severity vulnerability; its CVE record was published on August 27, 2026. The get-html-skeleton tool fetched a URL the caller supplied after checking only its syntax. The handler in src/tools/common/gethtmlskeleton.ts validated the url argument with isValidHttpUrl from src/utils/generic.ts, which confirmed the string began with an http or https scheme and parsed as a URL…
When was CVE-2026-81093 made public?
CVE-2026-81093 was made public on August 26, 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 27, 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-2026-81093 actively exploited?
CVE-2026-81093 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (42nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-81093?
CVE-2026-81093 has a CVSS base score of 8.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-81093?
A fix for CVE-2026-81093 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-81093 are linked in the Vendor Advisories panel on this page.

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