CVE-2026-41338

MEDIUMNVD 5.05.0
EchelonGraph scoreMEDIUM confidence

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

Score 5.0 from GitHub Security Advisory published 2026-04-24. NVD baseline CVSS 5.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3

Also known asEUVD-2026-25322 (ENISA EUVD) · GHSA-9hhx-mwf2-vr7v (GitHub Security Advisories)Source: ENISA EUVD

5.0EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: <0.1%CVSS: 5.0Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

OpenClaw before 2026.3.31 contains a time-of-check-time-of-use vulnerability in sandbox file operations that allows attackers to bypass fd-based defenses. Attackers can exploit check-then-act patterns in apply_patch, remove, and mkdir operations to manipulate files between validation and execution.

CVSS v3
5.0
EG Score
5.0MEDIUMmedium confidence
EG Risk
23
EG Risk 23/100

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)
Severity50% × 45%
Impact severity (EG Severity): CVSS 5.0 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.1% × 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 every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (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.
EPSS PROB
<0.1%
EPSS %ILE
below the 1st
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 (5.0): severity, escalated by confirmed exploitation. This CVE's 5.0 is its impact severity (EG Severity), not escalated.

EG Severity
5.0 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
<0.1% within 30 daysSource: FIRST EPSS. 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 every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

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

Exploitation none (CISA Vulnrichment) · Automatable no (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)60 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 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

April 23, 2026

Last Modified

April 28, 2026

Advisory Details (3)

Auto-updated Aug 2, 2026
Patch available. Sources: github_commit, github.
Web page

OpenClaw < 2026.3.31 - Time-of-Check-Time-of-Use (TOCTOU) Vulnerability in Sandbox File Operations | Advisories | VulnCheck

https://www.vulncheck.com/advisories/openclaw-time-of-check-time-of-use-toctou-vulnerability-in-sandbox-file-operations
GitHub advisoryMentions a patch (unverified)

Sandbox file operations use check-then-act, bypassing fd-based TOCTOU defenses · Advisory · openclaw/openclaw · GitHub

https://github.com/openclaw/openclaw/security/advisories/GHSA-rm5c-4rmf-vvhw
GitHub commit

commit 32a4a47d602e (openclaw/openclaw)

Fix landed in openclaw/openclaw commit 32a4a47d602e — awaiting tagged release

https://github.com/openclaw/openclaw/commit/32a4a47d602e0618f87b3e59f94d8c142767f860

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
openclaw—
  • every version up to 2026.3.31: fixed in 2026.3.31
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 34× 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 171 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 73 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-29 16:33 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  2. 2026-10-28 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  3. 2026-10-27 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  4. 2026-10-25 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  5. 2026-10-25 14:30 UTCEG score recompute
  6. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  7. 2026-10-23 02:22 UTCEG score recompute
  8. 2026-10-23 02:22 UTCGHSA enrichmentGHSA-9hhx-mwf2-vr7v · GitHub CVSS 5.0
  9. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  10. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  11. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  12. 2026-10-18 03:42 UTCEG score recompute
  13. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  14. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  15. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  16. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  17. 2026-10-13 23:24 UTCOSV refresh
  18. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  19. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  20. 2026-10-12 16:08 UTCEG score recompute
  21. 2026-10-11 19:50 UTCEG score recompute
  22. 2026-10-11 17:04 UTCEG score recompute
  23. 2026-10-11 14:30 UTCEG score recompute
  24. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  25. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 1st percentile
Show 73 more
  1. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  2. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  3. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  4. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  5. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  6. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  7. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  8. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  9. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  10. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  11. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  12. 2026-09-23 17:53 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  13. 2026-09-23 08:53 UTCOSV refresh
  14. 2026-09-17 19:31 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  15. 2026-09-16 14:08 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  16. 2026-09-13 16:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  17. 2026-09-12 15:01 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  18. 2026-09-11 14:53 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  19. 2026-09-11 09:37 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  20. 2026-09-10 09:34 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  21. 2026-09-08 22:00 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  22. 2026-09-06 13:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  23. 2026-09-04 05:06 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  24. 2026-09-04 03:29 UTCOSV refresh
  25. 2026-09-02 14:12 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  26. 2026-09-01 13:53 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  27. 2026-08-27 14:25 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  28. 2026-08-26 14:46 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  29. 2026-08-25 13:49 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  30. 2026-08-18 13:48 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  31. 2026-08-17 14:56 UTCEG score recompute
  32. 2026-08-17 14:56 UTCGHSA enrichmentGHSA-9hhx-mwf2-vr7v · GitHub CVSS 5.0
  33. 2026-08-17 13:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  34. 2026-08-16 05:51 UTCEG score recompute
  35. 2026-08-16 05:51 UTCGHSA enrichmentGHSA-9hhx-mwf2-vr7v · GitHub CVSS 5.0
  36. 2026-08-16 02:14 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  37. 2026-08-15 01:30 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  38. 2026-08-14 04:11 UTCEG score recompute
  39. 2026-08-14 04:11 UTCGHSA enrichmentGHSA-9hhx-mwf2-vr7v · GitHub CVSS 5.0
  40. 2026-08-13 22:00 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  41. 2026-08-12 17:56 UTCGHSA enrichmentGHSA-9hhx-mwf2-vr7v · GitHub CVSS 5.0
  42. 2026-08-11 06:56 UTCGHSA enrichmentGHSA-9hhx-mwf2-vr7v · GitHub CVSS 5.0
  43. 2026-08-10 05:11 UTCEG score recompute
  44. 2026-08-10 05:11 UTCGHSA enrichmentGHSA-9hhx-mwf2-vr7v · GitHub CVSS 5.0
  45. 2026-08-09 13:46 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  46. 2026-08-09 03:24 UTCEG score recompute
  47. 2026-08-09 03:24 UTCGHSA enrichmentGHSA-9hhx-mwf2-vr7v · GitHub CVSS 5.0
  48. 2026-08-08 16:37 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  49. 2026-08-07 12:39 UTCGHSA enrichmentGHSA-9hhx-mwf2-vr7v · GitHub CVSS 5.0
  50. 2026-08-05 22:59 UTCEG score recompute
  51. 2026-08-05 22:59 UTCGHSA enrichmentGHSA-9hhx-mwf2-vr7v · GitHub CVSS 5.0
  52. 2026-08-05 19:17 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  53. 2026-08-04 15:10 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  54. 2026-08-04 10:38 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  55. 2026-08-03 21:09 UTCEG score recompute
  56. 2026-08-03 21:09 UTCGHSA enrichmentGHSA-9hhx-mwf2-vr7v · GitHub CVSS 5.0
  57. 2026-08-03 10:36 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  58. 2026-08-02 11:29 UTCEG score recompute
  59. 2026-08-02 11:29 UTCGHSA enrichmentGHSA-9hhx-mwf2-vr7v · GitHub CVSS 5.0
  60. 2026-08-01 04:16 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  61. 2026-07-30 16:28 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  62. 2026-07-28 15:36 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  63. 2026-07-27 14:13 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  64. 2026-07-26 14:54 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  65. 2026-07-24 14:17 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  66. 2026-07-23 03:11 UTCEG score recompute
  67. 2026-07-22 14:08 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  68. 2026-07-20 17:08 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  69. 2026-07-19 23:38 UTCOSV refresh
  70. 2026-07-16 17:03 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  71. 2026-07-15 16:57 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  72. 2026-07-15 02:00 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  73. 2026-07-13 22:30 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile

Frequently asked(5)

What is CVE-2026-41338?
CVE-2026-41338 is a medium-severity vulnerability; its CVE record was published on April 23, 2026. OpenClaw before 2026.3.31 contains a time-of-check-time-of-use vulnerability in sandbox file operations that allows attackers to bypass fd-based defenses. Attackers can exploit check-then-act patterns in apply_patch, remove, and mkdir operations to manipulate files between validation and execution.
When was CVE-2026-41338 made public?
CVE-2026-41338 was made public on March 31, 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 April 23, 2026. EchelonGraph's copy of the record carries a last-modified date of April 28, 2026; the record at its source may have been updated since.
Is CVE-2026-41338 actively exploited?
CVE-2026-41338 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a <0.1% probability of exploitation in the next 30 days (below the 1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-41338?
CVE-2026-41338 has a CVSS v3 base score of 5.0 (NVD).
How do I remediate CVE-2026-41338?
A fix for CVE-2026-41338 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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