CVE-2026-9147

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-18. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

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

uproot dynamically generates Python class source code from ROOT TStreamerInfo records in a file and compiles it at runtime. Some file-controlled streamer metadata fields (for example, streamer element names) are interpolated into the generated Python source without safe quoting via repr() or the !r format specifier. An attacker who can supply a crafted ROOT file can place Python expression-breaking content into a streamer metadata field. When uproot generates and invokes the corresponding reader method, the injected Python expression is evaluated in the context of the process opening the file, resulting in arbitrary Python code execution in applications that open or process attacker-controlled ROOT files with affected uproot code paths.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

July 18, 2026

Last Modified

August 28, 2026

Advisory Details (3)

Auto-updated Jul 18, 2026
Patch available. Sources: github_commit.
generic

uproot 5.7.4 and prior Code Injection via TStreamerInfo Metadata | Advisories | VulnCheck

https://www.vulncheck.com/advisories/uproot-and-before-code-injection-via-tstreamerinfo-metadata
github_commit Patch Available

commit c045c2824295 (scikit-hep/uproot5)

Patch available: scikit-hep/uproot5 v5.7.5 (contains commit c045c2824295)

https://github.com/scikit-hep/uproot5/commit/c045c2824295d907d2e705f31110c742928e50e7
generic

GitHub - scikit-hep/uproot5: ROOT I/O in pure Python and NumPy. · GitHub

https://github.com/scikit-hep/uproot5

Vendor Advisories for CVE-2026-9147(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 23× in last 7d / 115× 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 150 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-9147?
CVE-2026-9147 is a high vulnerability published on July 18, 2026. uproot dynamically generates Python class source code from ROOT TStreamerInfo records in a file and compiles it at runtime. Some file-controlled streamer metadata fields (for example, streamer element names) are interpolated into the generated Python source without safe quoting via repr() or the !r…
When was CVE-2026-9147 disclosed?
CVE-2026-9147 was first published in the National Vulnerability Database on July 18, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9147 actively exploited?
CVE-2026-9147 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 87.2% of all scored CVEs.
What is the CVSS score of CVE-2026-9147?
CVE-2026-9147 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-9147?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9147, 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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