CVE-2026-47213

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreMEDIUM confidence

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

Score 6.5 from GitHub Security Advisory published 2026-05-29. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Elevated
6.5EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (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: 6.5Exploit: No code on recordExposed services: Not assessed

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

Boxlite is a sandbox service that allows users to create lightweight virtual machines (Boxes) and launch OCI containers within them to run untrusted code. In versions 0.8.2 and prior, Boxlite allows users to configure a timeout for services running inside the virtual machine. When the timeout is triggered, Boxlite sends a signal to kill the process. However, instead of using the uncatchable SIGKILL signal, Boxlite uses the catchable SIGALRM signal. Malicious code running inside the sandbox can exploit this vulnerability to continue running after the timeout is triggered, leading to resource exhaustion within the virtual machine and affecting the availability of the Boxlite service. This issue has been patched via commit 28159fc.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
45
EG Risk 45/100

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)
Severity65% × 45%
Impact severity (EG Severity): CVSS 6.5 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 or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (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: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
36th
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 (6.5): severity, escalated by confirmed exploitation. This CVE's 6.5 is its impact severity (EG Severity), not escalated.

EG Severity
6.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-17). 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 or medium mission impact; Track* at high (mission-essential systems).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 low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation public PoC (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

May 29, 2026

Last Modified

July 23, 2026

Advisory Details (2)

Auto-updated Jun 12, 2026
No fix on record yet. Sources: github_commit, github.
GitHub advisoryMentions a patch (unverified)

Timeout Bypass Vulnerability in boxlite · Advisory · boxlite-ai/boxlite · GitHub

https://github.com/boxlite-ai/boxlite/security/advisories/GHSA-xjhv-pp2r-6f82
GitHub commit

commit 28159fc5b6b6 (boxlite-ai/boxlite)

Fix landed in boxlite-ai/boxlite commit 28159fc5b6b6 — awaiting tagged release

https://github.com/boxlite-ai/boxlite/commit/28159fc5b6b6fd5037e18a58fc4644c882e3c581

Vendor Advisories for CVE-2026-47213(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
pipboxlite—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)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
boxlite0.5.10 ... 0.8.2 (18 versions)
  • every version through 0.8.2: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 32× 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 212 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 112 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  2. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  3. 2026-10-18 03:36 UTCEG score recompute
  4. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  5. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  6. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  7. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  8. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  9. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  10. 2026-10-12 16:01 UTCEG score recompute
  11. 2026-10-12 16:00 UTCGHSA enrichmentGHSA-xjhv-pp2r-6f82 · GitHub CVSS 6.5
  12. 2026-10-11 19:44 UTCEG score recompute
  13. 2026-10-11 16:59 UTCEG score recompute
  14. 2026-10-11 14:24 UTCEG score recompute
  15. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  16. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  17. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  18. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  19. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  20. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  21. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  22. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  23. 2026-10-03 14:48 UTCOSV refresh
  24. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  25. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 35th percentile
Show 75 more
  1. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  2. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  3. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  4. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  5. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  6. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  7. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  8. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  9. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  10. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  11. 2026-09-14 06:22 UTCEG score recompute
  12. 2026-09-14 06:22 UTCGHSA enrichmentGHSA-xjhv-pp2r-6f82 · GitHub CVSS 6.5
  13. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  14. 2026-09-13 01:06 UTCOSV refresh
  15. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  16. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  17. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  18. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  19. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  20. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  21. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  22. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  23. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  24. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  25. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  26. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  27. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  28. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  29. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  30. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  31. 2026-08-25 04:15 UTCEG score recompute
  32. 2026-08-25 04:15 UTCGHSA enrichmentGHSA-xjhv-pp2r-6f82 · GitHub CVSS 6.5
  33. 2026-08-23 14:10 UTCEG score recompute
  34. 2026-08-23 14:10 UTCGHSA enrichmentGHSA-xjhv-pp2r-6f82 · GitHub CVSS 6.5
  35. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  36. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  37. 2026-08-21 14:59 UTCEG score recompute
  38. 2026-08-21 14:59 UTCGHSA enrichmentGHSA-xjhv-pp2r-6f82 · GitHub CVSS 6.5
  39. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  40. 2026-08-20 10:24 UTCEG score recompute
  41. 2026-08-20 10:24 UTCGHSA enrichmentGHSA-xjhv-pp2r-6f82 · GitHub CVSS 6.5
  42. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  43. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  44. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  45. 2026-08-17 06:51 UTCEG score recompute
  46. 2026-08-17 06:50 UTCGHSA enrichmentGHSA-xjhv-pp2r-6f82 · GitHub CVSS 6.5
  47. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  48. 2026-08-16 02:24 UTCEG score recompute
  49. 2026-08-16 02:24 UTCGHSA enrichmentGHSA-xjhv-pp2r-6f82 · GitHub CVSS 6.5
  50. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  51. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  52. 2026-08-14 23:50 UTCGHSA enrichmentGHSA-xjhv-pp2r-6f82 · GitHub CVSS 6.5
  53. 2026-08-14 00:27 UTCEG score recompute
  54. 2026-08-14 00:27 UTCGHSA enrichmentGHSA-xjhv-pp2r-6f82 · GitHub CVSS 6.5
  55. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  56. 2026-08-12 22:28 UTCEG score recompute
  57. 2026-08-12 22:28 UTCGHSA enrichmentGHSA-xjhv-pp2r-6f82 · GitHub CVSS 6.5
  58. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  59. 2026-08-11 23:05 UTCEG score recompute
  60. 2026-08-11 23:05 UTCGHSA enrichmentGHSA-xjhv-pp2r-6f82 · GitHub CVSS 6.5
  61. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  62. 2026-08-10 23:42 UTCGHSA enrichmentGHSA-xjhv-pp2r-6f82 · GitHub CVSS 6.5
  63. 2026-08-09 20:02 UTCEG score recompute
  64. 2026-08-09 20:02 UTCGHSA enrichmentGHSA-xjhv-pp2r-6f82 · GitHub CVSS 6.5
  65. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  66. 2026-08-08 20:39 UTCEG score recompute
  67. 2026-08-08 20:39 UTCGHSA enrichmentGHSA-xjhv-pp2r-6f82 · GitHub CVSS 6.5
  68. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  69. 2026-08-07 21:11 UTCEG score recompute
  70. 2026-08-07 21:11 UTCGHSA enrichmentGHSA-xjhv-pp2r-6f82 · GitHub CVSS 6.5
  71. 2026-08-06 21:48 UTCEG score recompute
  72. 2026-08-06 21:48 UTCGHSA enrichmentGHSA-xjhv-pp2r-6f82 · GitHub CVSS 6.5
  73. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  74. 2026-08-05 22:25 UTCEG score recompute
  75. 2026-08-05 22:25 UTCGHSA enrichmentGHSA-xjhv-pp2r-6f82 · GitHub CVSS 6.5

Frequently asked(5)

What is CVE-2026-47213?
CVE-2026-47213 is a medium-severity vulnerability; its CVE record was published on May 29, 2026. Boxlite is a sandbox service that allows users to create lightweight virtual machines (Boxes) and launch OCI containers within them to run untrusted code. In versions 0.8.2 and prior, Boxlite allows users to configure a timeout for services running inside the virtual machine. When the timeout is…
When was the CVE record for CVE-2026-47213 published?
The CVE record for CVE-2026-47213 was published on May 29, 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 July 23, 2026; the record at its source may have been updated since.
Is CVE-2026-47213 actively exploited?
CVE-2026-47213 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (36th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-47213?
CVE-2026-47213 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-47213?
No fix for CVE-2026-47213 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-47213 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-2026-47213

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