CVE-2026-75858

HIGHPre-NVD 7.87.8
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (28th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Elevated
7.8EG
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: 0.4%CVSS: 7.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

CodeWhale (packages codewhale / codewhale-tui) versions >= 0.8.41 and < 0.8.64 contain a remote code execution vulnerability in the rlm_eval tool. The tool's approval_requirement() returns ApprovalRequirement::Auto, which the engine treats as 'never prompt,' causing arbitrary model-supplied Python code to run in a python3 interpreter without consulting the user's configured --approval-policy and without any approval prompt or audit step. An attacker can induce the agent to execute arbitrary code via prompt injection in untrusted content the agent reads (a web page, fetched URL, repository file, or MCP tool result); the companion rlm_open tool can stage such content. Code runs on the user's machine at the user's privilege level. Fixed in 0.8.64.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
51
EG Risk 51/100

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)
Severity78% × 45%
The EG Score, 7.8 of 10.
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
0.4%
EPSS %ILE
28th
KEV
Not listed

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.

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 18, 2026

Last Modified

September 8, 2026

Advisory Details (3)

Auto-updated Aug 18, 2026
Patch available. Sources: github, github_commit.
Web page

CodeWhale rlm_eval before 0.8.64 Remote Code Execution | Advisories | VulnCheck

https://www.vulncheck.com/advisories/codewhale-rlm-eval-before-remote-code-execution
GitHub commit

commit 57f3c89471e2 (Hmbown/CodeWhale)

Fix landed in Hmbown/CodeWhale commit 57f3c89471e2 — awaiting tagged release

https://github.com/Hmbown/CodeWhale/commit/57f3c89471e27ac4032d9791f6885e5d4408c381
GitHub advisoryMentions a patch (unverified)

rlm_eval auto-approves arbitrary Python execution, bypassing the user's approval policy (RCE) · Advisory · Hmbown/CodeWhale · GitHub

https://github.com/Hmbown/CodeWhale/security/advisories/GHSA-wrj3-vj8c-784f

Vendor Advisories for CVE-2026-75858(1)

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

Affected Packages

(4 across 2 ecosystems)
crates.io(2)
PackageVulnerable rangeFix by version rangeDependents
codewhale-tui—
  • 0.8.41 up to 0.8.64: fixed in 0.8.64
—
deepseek-tui—
  • 0.8.33 through 0.8.41: no fix on record
—
npm(2)
PackageVulnerable rangeFix by version rangeDependents
codewhale—
  • 0.8.41 up to 0.8.64: fixed in 0.8.64
—
deepseek-tui—
  • 0.8.33 up to 0.8.41: fixed in 0.8.41
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 53× 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 98 of 103 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. 2 repeat rows among the latest 100 are merged into the row they repeat. The 5 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 0.4% · 28th percentile
  2. 2026-10-13 07:17 UTCEG score recompute
  3. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.4% · 28th percentile
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  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 28th percentile
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  23. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  24. 2026-09-30 21:47 UTCEG score recompute
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  1. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  2. 2026-09-28 21:56 UTCEG score recompute
  3. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 27th percentile
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  5. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 27th percentile
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  7. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 27th percentile
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  36. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  37. 2026-09-09 08:51 UTCEG score recompute
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  39. 2026-09-07 16:08 UTCEG score recompute
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  57. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  58. 2026-08-27 19:24 UTCEG score recompute
  59. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  60. 2026-08-26 18:13 UTCEG score recompute
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  72. 2026-08-19 18:20 UTCEG score recompute
  73. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 18th percentile

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-75858?
CVE-2026-75858 is a high-severity vulnerability; its CVE record was published on August 18, 2026. CodeWhale (packages codewhale / codewhale-tui) versions >= 0.8.41 and < 0.8.64 contain a remote code execution vulnerability in the rlmeval tool. The tool's approvalrequirement() returns ApprovalRequirement::Auto, which the engine treats as 'never prompt,' causing arbitrary model-supplied Python…
When was CVE-2026-75858 made public?
CVE-2026-75858 was made public on July 16, 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 18, 2026. EchelonGraph's copy of the record carries a last-modified date of September 8, 2026; the record at its source may have been updated since.
Is CVE-2026-75858 actively exploited?
CVE-2026-75858 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (28th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75858?
CVE-2026-75858 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-75858?
A fix for CVE-2026-75858 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-75858 are linked in the Vendor Advisories panel on this page.

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