CVE-2026-67438

MEDIUMPre-NVD 6.66.6—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 1.0%, top 41% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this weekElevated
6.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 6.6Exploit: Elevated riskExposed: 0

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

OliveTin gives access to predefined shell commands from a web interface. From 3000.2.0 until 3000.17.0, the service/internal/executor/arguments.go checkShellArgumentSafety function does not treat regex: custom argument types as unsafe for Shell mode actions, allowing values that pass typeSafetyCheckRegex to be interpolated by wrapCommandInShell into an sh -c command string and enabling OS command injection. This issue is fixed in version 3000.17.0.

CVSS v3
6.6
EG Score
6.6(medium)
EG Risk
46(Track*)
EG Risk 46/100SSVC: 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
Severity66% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
59%
KEV
Not listed

Published

July 29, 2026

Last Modified

July 30, 2026

Advisory Details (3)

Auto-updated Jul 29, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

3000.17.0

Patch available: OliveTin/OliveTin 3000.17.0

https://github.com/OliveTin/OliveTin/releases/tag/3000.17.0
github_commit

commit 995ff79736f2 (OliveTin/OliveTin)

Fix landed in OliveTin/OliveTin commit 995ff79736f2 — awaiting tagged release

https://github.com/OliveTin/OliveTin/commit/995ff79736f2bccc364448a3ece84087b550b232
github Patch Available🟡 PoC Available

OliveTin OS Command Injection via Custom regex: Argument Type Bypassing Shell Safety Check · Advisory · OliveTin/OliveTin · GitHub

https://github.com/OliveTin/OliveTin/security/advisories/GHSA-xc5w-4v5w-7x65

Vendor Advisories for CVE-2026-67438(1)

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

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/OliveTin/OliveTin—0.0.0-20260708084548-995ff79736f2—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 7× 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. 2026-08-01 04:16 UTCEPSS rescore
  2. 2026-07-30 16:34 UTCEG score recompute
  3. 2026-07-30 16:28 UTCEPSS rescore
  4. 2026-07-30 15:40 UTCEG score recompute
  5. 2026-07-29 21:22 UTCEG score recompute
  6. 2026-07-29 21:07 UTCEG score recompute
  7. 2026-07-29 21:07 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-67438?
CVE-2026-67438 is a medium vulnerability published on July 29, 2026. OliveTin gives access to predefined shell commands from a web interface. From 3000.2.0 until 3000.17.0, the service/internal/executor/arguments.go checkShellArgumentSafety function does not treat regex: custom argument types as unsafe for Shell mode actions, allowing values that pass…
When was CVE-2026-67438 disclosed?
CVE-2026-67438 was first published in the National Vulnerability Database on July 29, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-67438 actively exploited?
CVE-2026-67438 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 40.8% of all scored CVEs.
What is the CVSS score of CVE-2026-67438?
CVE-2026-67438 has a CVSS v3 base score of 6.6 (NVD).
How do I remediate CVE-2026-67438?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-67438, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-67438

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