CVE-2026-34444

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

Score 10.0 from GitHub Security Advisory (severity: HIGH) published 2026-04-07. NVD baseline CVSS 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 10.0Exploit: Elevated riskExposed: 0

A fix is available — apply it.

Lupa integrates the runtimes of Lua or LuaJIT2 into CPython. In 2.6 and earlier, attribute_filter is not consistently applied when attributes are accessed through built-in functions like getattr and setattr. This allows an attacker to bypass the intended restrictions and eventually achieve arbitrary code execution.

CVSS v3
10.0
EG Score
10.0(medium)
EG Risk
61(Track)
EG Risk 61/100SSVC: 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
Severity100% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
47%
KEV
Not listed

Published

April 6, 2026

Last Modified

July 15, 2026

Advisory Details (5)

Auto-updated Aug 19, 2026
🔬 Proof of concept available. Patch available. Sources: github, redhat.
redhat Patch Available
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34444.json
redhat

2455413 – (CVE-2026-34444) CVE-2026-34444 lupa: Lupa: Arbitrary Code Execution due to inconsistent attribute filtering

https://bugzilla.redhat.com/show_bug.cgi?id=2455413
redhat Patch Available

CVE-2026-34444 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-34444
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:22993
github Patch Available🟡 PoC Available

Sandbox escape and RCE due to incomplete attribute_filter enforcement in getattr / setattr · Advisory · scoder/lupa · GitHub

https://github.com/scoder/lupa/security/advisories/GHSA-69v7-xpr6-6gjm

Vendor Advisories for CVE-2026-34444(1)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatsatellite/foreman-mcp-server-rhel9:17804920082026-06-03redhat
piplupa—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

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
python-lupa1.10+dfsg-1 ... 2.4+dfsg-1 (6 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
python-lupa1.14.1+dfsg-1, 2.2+dfsg-1, 2.4+dfsg-1——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
python-lupa2.4+dfsg-1——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
python-lupa2.4+dfsg-1——
PyPI(1)
PackageVulnerable rangeFixed inDependents
lupa0.1 ... 2.6 (46 versions)——

Weakness Classification(4)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 122× 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.

Showing the most recent 100 of 276 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-34444?
CVE-2026-34444 is a critical vulnerability published on April 6, 2026. Lupa integrates the runtimes of Lua or LuaJIT2 into CPython. In 2.6 and earlier, attribute_filter is not consistently applied when attributes are accessed through built-in functions like getattr and setattr. This allows an attacker to bypass the intended restrictions and eventually achieve…
When was CVE-2026-34444 disclosed?
CVE-2026-34444 was first published in the National Vulnerability Database on April 6, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34444 actively exploited?
CVE-2026-34444 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 53.3% of all scored CVEs.
What is the CVSS score of CVE-2026-34444?
CVE-2026-34444 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-34444?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-34444, 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

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