CVE-2026-41451

HIGHPre-NVD 7.87.8
EchelonGraph scoreMEDIUM confidence

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

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-21. A secondary CVSS source baseline 7.8; 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 week
7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

UAC (Unix-like Artifacts Collector) versions prior to 3.3.0 contain a command injection vulnerability in the user substitution logic within parse_artifact.sh where usernames and home directories from /etc/passwd are substituted directly into command strings without escaping before execution via eval. Attackers can inject shell metacharacters such as command substitution syntax or semicolons through crafted usernames or home directory paths in /etc/passwd entries to execute arbitrary commands on the analyst's host system.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
36
EG Risk 36/100

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.
Exploitation1.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (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.
EPSS PROB
1.2%
EPSS %ILE
66th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (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 21, 2026

Last Modified

September 24, 2026

Advisory Details (3)

Auto-updated Aug 21, 2026
Patch available. Sources: github_pr, github_commit.
Web page

UAC < 3.3.0 Command Injection via User Substitution in parse_artifact.sh | Advisories | VulnCheck

https://www.vulncheck.com/advisories/uac-command-injection-via-user-substitution-in-parse-artifact-sh
GitHub commit Patch Available

commit 2cc367d8ead3 (tclahr/uac)

Patch available: tclahr/uac v3.3.0 (contains commit 2cc367d8ead3)

https://github.com/tclahr/uac/commit/2cc367d8ead388f05abd3cfb8af537788a124e72
GitHub pull request Patch Available

fix: escape runtime placeholders before eval

Patch available: tclahr/uac v3.3.0 (PR #443 merged 2026-03-28)

https://github.com/tclahr/uac/pull/443

Vendor Advisories for CVE-2026-41451(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 15× in last 7d / 90× 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 180 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 80 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  3. 2026-10-12 16:08 UTCEG score recompute
  4. 2026-10-11 19:50 UTCEG score recompute
  5. 2026-10-11 17:04 UTCEG score recompute
  6. 2026-10-11 14:30 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  10. 2026-10-09 05:53 UTCEG score recompute
  11. 2026-10-09 05:53 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  12. 2026-10-08 17:12 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  13. 2026-10-08 04:55 UTCEG score recompute
  14. 2026-10-08 04:55 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  15. 2026-10-07 23:48 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  16. 2026-10-07 05:16 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  17. 2026-10-06 16:49 UTCEG score recompute
  18. 2026-10-06 16:49 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  19. 2026-10-06 15:17 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  20. 2026-10-06 03:05 UTCEG score recompute
  21. 2026-10-06 03:04 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  22. 2026-10-05 17:43 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  23. 2026-10-05 09:26 UTCEG score recompute
  24. 2026-10-05 09:25 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  25. 2026-10-04 23:22 UTCEPSS rescoreEPSS 1.2% · 66th percentile
Show 75 more
  1. 2026-10-04 20:48 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  2. 2026-10-04 05:08 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  3. 2026-10-03 16:42 UTCEG score recompute
  4. 2026-10-03 16:42 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  5. 2026-10-03 14:25 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  6. 2026-10-02 22:18 UTCEG score recompute
  7. 2026-10-02 22:18 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  8. 2026-10-02 09:51 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  9. 2026-10-01 21:25 UTCEG score recompute
  10. 2026-10-01 21:25 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  11. 2026-10-01 19:50 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  12. 2026-10-01 08:54 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  13. 2026-09-30 20:28 UTCEG score recompute
  14. 2026-09-30 20:28 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  15. 2026-09-30 15:03 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  16. 2026-09-30 07:53 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  17. 2026-09-29 16:11 UTCEG score recompute
  18. 2026-09-29 16:11 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  19. 2026-09-28 21:35 UTCEG score recompute
  20. 2026-09-28 21:35 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  21. 2026-09-28 04:14 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  22. 2026-09-27 15:48 UTCEG score recompute
  23. 2026-09-27 15:48 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  24. 2026-09-27 13:48 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  25. 2026-09-27 02:28 UTCEG score recompute
  26. 2026-09-27 02:28 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  27. 2026-09-26 15:58 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  28. 2026-09-25 09:48 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  29. 2026-09-24 21:21 UTCEG score recompute
  30. 2026-09-24 21:21 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  31. 2026-09-24 09:04 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  32. 2026-09-23 20:37 UTCEG score recompute
  33. 2026-09-23 20:37 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  34. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  35. 2026-09-23 08:10 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  36. 2026-09-22 19:43 UTCEG score recompute
  37. 2026-09-22 19:43 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  38. 2026-09-22 03:55 UTCEG score recompute
  39. 2026-09-22 03:55 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  40. 2026-09-21 15:28 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  41. 2026-09-21 02:59 UTCEG score recompute
  42. 2026-09-21 02:59 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  43. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  44. 2026-09-20 14:32 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  45. 2026-09-20 01:54 UTCEG score recompute
  46. 2026-09-20 01:54 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  47. 2026-09-19 13:27 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  48. 2026-09-19 01:00 UTCEG score recompute
  49. 2026-09-19 01:00 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  50. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  51. 2026-09-18 12:33 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  52. 2026-09-18 00:06 UTCEG score recompute
  53. 2026-09-18 00:06 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  54. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  55. 2026-09-17 11:08 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  56. 2026-09-16 22:41 UTCEG score recompute
  57. 2026-09-16 22:41 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  58. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  59. 2026-09-16 09:36 UTCEG score recompute
  60. 2026-09-16 09:36 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  61. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  62. 2026-09-15 19:59 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  63. 2026-09-15 07:33 UTCEG score recompute
  64. 2026-09-15 07:33 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  65. 2026-09-14 19:06 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  66. 2026-09-14 06:24 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  67. 2026-09-13 17:58 UTCEG score recompute
  68. 2026-09-13 17:58 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  69. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  70. 2026-09-13 05:31 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  71. 2026-09-12 17:05 UTCEG score recompute
  72. 2026-09-12 17:05 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  73. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  74. 2026-09-12 04:38 UTCGHSA enrichmentGHSA-3v7p-hjjf-gqp8 · GitHub severity HIGH · GitHub CVSS 7.8
  75. 2026-09-11 16:11 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-41451?
CVE-2026-41451 is a high-severity vulnerability; its CVE record was published on August 21, 2026. UAC (Unix-like Artifacts Collector) versions prior to 3.3.0 contain a command injection vulnerability in the user substitution logic within parse_artifact.sh where usernames and home directories from /etc/passwd are substituted directly into command strings without escaping before execution via…
When was CVE-2026-41451 made public?
CVE-2026-41451 was made public on March 15, 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 21, 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-2026-41451 actively exploited?
CVE-2026-41451 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.2% probability of exploitation in the next 30 days (66th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-41451?
CVE-2026-41451 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-2026-41451?
A fix for CVE-2026-41451 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-41451 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-41451

Explore →

Is Your Infrastructure Affected by CVE-2026-41451?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs