CVE-2026-73222

HIGHPre-NVD 8.88.8
EchelonGraph scoreMEDIUM confidence

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

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-03. A secondary CVSS source baseline 8.8; 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 weekElevated

Also known asEUVD-2026-56858 (ENISA EUVD) · GHSA-79wm-x847-7cvg (GitHub Security Advisories)Source: ENISA EUVD

8.8EG
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).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 8.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Claude Code Templates is a CLI tool for configuring and monitoring Claude Code. Prior to 1.29.4, the Claude Code Studio server launched by the --studio option in cli-tool/src/sandbox-server.js binds to all interfaces on port 3444, permits cross-origin requests, and requires no authentication. The POST /api/execute endpoint passes the prompt request-body field to executeLocalTask(), and POST /api/install-agent passes the agentName request-body field to a child process. The same unsafe agent field path is reachable from /api/execute through checkAndInstallAgent(). These attacker-controlled values reach child_process.spawn() with shell execution enabled, causing Node.js to construct a shell command in which metacharacters are interpreted. An attacker who can reach the port directly, or who convinces a developer running Studio to visit a malicious website, can execute arbitrary operating-system commands with the developer's privileges and compromise source code, credentials, and local data. This issue is fixed in version 1.29.4.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity88% × 45%
Impact severity (EG Severity): CVSS 8.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (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: 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
0.3%
EPSS %ILE
24th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (8.8): severity, escalated by confirmed exploitation. This CVE's 8.8 is its impact severity (EG Severity), not escalated.

EG Severity
8.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

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

Exploitation public PoC (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.

The score's inputs: 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 11, 2026

Last Modified

October 24, 2026

Advisory Details (3)

Auto-updated Aug 11, 2026
Patch available. Sources: github, github_commit.
Web page

claude-code-templates/CHANGELOG.md at main · davila7/claude-code-templates · GitHub

https://github.com/davila7/claude-code-templates/blob/main/CHANGELOG.md
GitHub commit

commit bc4618b07232 (davila7/claude-code-templates)

Fix landed in davila7/claude-code-templates commit bc4618b07232 — awaiting tagged release

https://github.com/davila7/claude-code-templates/commit/bc4618b07232633c1c0aac12a43e436268d31783
GitHub advisoryMentions a patch (unverified)

Unauthenticated OS command injection (RCE) in Claude Code Studio server (--studio) · Advisory · davila7/claude-code-templates · GitHub

https://github.com/davila7/claude-code-templates/security/advisories/GHSA-79wm-x847-7cvg

Vendor Advisories for CVE-2026-73222(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
npmclaude-code-templates @ 1.29.4 (fixes <= 1.29.2)—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
claude-code-templates—
  • every version up to 1.29.4: fixed in 1.29.4
—

Weakness Classification(3)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 44× 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 99 of 140 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 41 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  2. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  3. 2026-11-01 07:39 UTCGHSA enrichmentGHSA-79wm-x847-7cvg · GitHub severity HIGH · GitHub CVSS 8.8
  4. 2026-11-01 07:39 UTCEG score recompute
  5. 2026-10-31 17:13 UTCEG score recompute
  6. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  7. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  8. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  9. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  10. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  11. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  12. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  13. 2026-10-25 14:06 UTCEG score recompute
  14. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  15. 2026-10-24 15:26 UTCEG score recompute
  16. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  17. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  18. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  19. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  20. 2026-10-20 08:55 UTCEG score recompute
  21. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  22. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  23. 2026-10-18 03:15 UTCEG score recompute
  24. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  25. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
Show 74 more
  1. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  2. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  3. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  4. 2026-10-13 07:58 UTCEG score recompute
  5. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  6. 2026-10-12 15:41 UTCEG score recompute
  7. 2026-10-11 19:26 UTCEG score recompute
  8. 2026-10-11 16:42 UTCEG score recompute
  9. 2026-10-11 14:02 UTCEG score recompute
  10. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  11. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  13. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  15. 2026-10-06 17:36 UTCEG score recompute
  16. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  17. 2026-10-05 17:46 UTCEG score recompute
  18. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  19. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  20. 2026-10-03 20:29 UTCEG score recompute
  21. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  22. 2026-10-02 22:18 UTCEG score recompute
  23. 2026-10-02 08:28 UTCEG score recompute
  24. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  25. 2026-09-30 22:02 UTCEG score recompute
  26. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  27. 2026-09-29 05:01 UTCEG score recompute
  28. 2026-09-28 14:43 UTCEG score recompute
  29. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  30. 2026-09-28 02:04 UTCEG score recompute
  31. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  32. 2026-09-27 10:01 UTCEG score recompute
  33. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  34. 2026-09-25 03:46 UTCEG score recompute
  35. 2026-09-24 01:44 UTCEG score recompute
  36. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  37. 2026-09-22 23:50 UTCEG score recompute
  38. 2026-09-21 22:43 UTCEG score recompute
  39. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  40. 2026-09-21 10:10 UTCEG score recompute
  41. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  42. 2026-09-19 16:55 UTCEG score recompute
  43. 2026-09-19 03:24 UTCEG score recompute
  44. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  45. 2026-09-18 02:20 UTCEG score recompute
  46. 2026-09-17 00:26 UTCEG score recompute
  47. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  48. 2026-09-16 10:53 UTCEG score recompute
  49. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  50. 2026-09-15 06:25 UTCEG score recompute
  51. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  52. 2026-09-14 04:40 UTCEG score recompute
  53. 2026-09-13 03:34 UTCEG score recompute
  54. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  55. 2026-09-12 02:29 UTCEG score recompute
  56. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  57. 2026-09-11 13:57 UTCEG score recompute
  58. 2026-09-10 09:48 UTCEG score recompute
  59. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  60. 2026-09-09 05:24 UTCEG score recompute
  61. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  62. 2026-09-07 18:32 UTCEG score recompute
  63. 2026-09-06 14:33 UTCEG score recompute
  64. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  65. 2026-09-06 02:01 UTCEG score recompute
  66. 2026-09-05 00:53 UTCEG score recompute
  67. 2026-09-04 08:04 UTCEG score recompute
  68. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  69. 2026-09-02 23:48 UTCEG score recompute
  70. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  71. 2026-09-02 01:52 UTCEG score recompute
  72. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  73. 2026-09-01 13:18 UTCEG score recompute
  74. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 10th percentile

Frequently asked(5)

What is CVE-2026-73222?
CVE-2026-73222 is a high-severity vulnerability; its CVE record was published on August 11, 2026. Claude Code Templates is a CLI tool for configuring and monitoring Claude Code. Prior to 1.29.4, the Claude Code Studio server launched by the --studio option in cli-tool/src/sandbox-server.js binds to all interfaces on port 3444, permits cross-origin requests, and requires no authentication. The…
When was the CVE record for CVE-2026-73222 published?
The CVE record for CVE-2026-73222 was published on August 11, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 24, 2026; the record at its source may have been updated since.
Is CVE-2026-73222 actively exploited?
CVE-2026-73222 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (24th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-73222?
CVE-2026-73222 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-73222?
A fix for CVE-2026-73222 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-73222 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-73222

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