CVE-2026-19672

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 65% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 4 sources updated this week
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: None knownExposed: 0

A fix is available — apply it.

The tarfile module's tar and data extraction filters created directories outside the destination for members whose name leaves the destination and returns to it, such as ../evil/../dest/sub/file. The containment check used the resolved path, but intermediate directories were created from the name as given.

Only empty directories are created outside the destination. Member contents are still extracted inside it. To return to the destination the member's name must contain the destination directory's own final component, so extraction into a secure randomised directory is not affected.

This affects POSIX platforms only. On Windows, .. components are collapsed before the path reaches the filesystem, so the directories outside the destination are never created.

CVSS v3
6.3
EG Score
6.3(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity63% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

August 19, 2026

Last Modified

August 28, 2026

Advisory Details (2)

Auto-updated Aug 19, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr.
generic

Mailman 3 [CVE-2026-19672] tarfile extraction filter bypass allows creation of directories outside the destination - Security-announce - python.org

https://mail.python.org/archives/list/[email protected]/thread/J2WT2ALRWEXQJOB3C7Q2HYWUXP3CINWO/
github_pr

gh-155999: In `tarfile`, handle a member that leaves the destination and comes back

Fix merged in python/cpython PR #156000 on 2026-08-19 — awaiting tagged release

https://github.com/python/cpython/pull/156000

Vendor Advisories for CVE-2026-19672(3)

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

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatpython3-14-main-3.14.7-1.1.hum12026-09-08redhat
redhatpython3-10-main-3.10.21-1.1.hum12026-09-08redhat
redhatpython3-11-main-3.11.16-1.2.hum12026-09-08redhat
redhatpython3-12-main-3.12.14-1.1.hum12026-09-08redhat
redhatpython3-13-main-3.13.15-1.1.hum12026-09-08redhat

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

(8 across 3 ecosystems)
Debian:14(4)
PackageVulnerable rangeFixed inDependents
pypy37.3.19+dfsg-2 ... 7.3.23+dfsg-1 (11 versions)——
python3.133.13.11-1 ... 3.13.9-1 (9 versions)——
python3.143.14.0-1 ... 3.14.7-2 (26 versions)——
python3.153.15.0~a8-1 ... 3.15.0~rc1-1 (9 versions)——
Debian:12(2)
PackageVulnerable rangeFixed inDependents
pypy37.3.11+dfsg-2 ... 7.3.23+dfsg-1 (29 versions)——
python3.113.11.2-6 ... 3.11.9-1 (28 versions)——
Debian:13(2)
PackageVulnerable rangeFixed inDependents
pypy37.3.19+dfsg-2 ... 7.3.23+dfsg-1 (11 versions)——
python3.133.13.11-1 ... 3.13.9-1 (13 versions)——

Weakness Classification(1)

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

Additional Vendor Advisories

(4)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 23× in last 7d / 92× 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.

  1. 2026-09-18 19:27 UTCEPSS rescore
  2. 2026-09-18 15:00 UTCEG score recompute
  3. 2026-09-18 15:00 UTCVendor advisory
  4. 2026-09-18 15:00 UTCGHSA enrichment
  5. 2026-09-17 13:46 UTCEG score recompute
  6. 2026-09-17 13:46 UTCVendor advisory
  7. 2026-09-17 13:46 UTCGHSA enrichment
  8. 2026-09-16 14:07 UTCEPSS rescore
  9. 2026-09-16 12:32 UTCEG score recompute
  10. 2026-09-16 12:32 UTCVendor advisory
  11. 2026-09-16 12:32 UTCGHSA enrichment
  12. 2026-09-16 05:14 UTCEPSS rescore
  13. 2026-09-15 11:18 UTCEG score recompute
  14. 2026-09-15 11:18 UTCVendor advisory
  15. 2026-09-15 11:18 UTCGHSA enrichment
  16. 2026-09-14 08:51 UTCEG score recompute
  17. 2026-09-14 08:51 UTCVendor advisory
  18. 2026-09-14 08:51 UTCGHSA enrichment
  19. 2026-09-13 16:46 UTCEPSS rescore
  20. 2026-09-13 07:37 UTCEG score recompute
  21. 2026-09-13 07:37 UTCVendor advisory
  22. 2026-09-13 07:37 UTCGHSA enrichment
  23. 2026-09-12 15:00 UTCEPSS rescore
  24. 2026-09-12 06:23 UTCEG score recompute
  25. 2026-09-12 06:23 UTCVendor advisory
Show 70 more
  1. 2026-09-12 06:23 UTCGHSA enrichment
  2. 2026-09-11 14:52 UTCEPSS rescore
  3. 2026-09-11 09:36 UTCEPSS rescore
  4. 2026-09-11 05:08 UTCEG score recompute
  5. 2026-09-11 05:08 UTCVendor advisory
  6. 2026-09-11 05:08 UTCGHSA enrichment
  7. 2026-09-10 09:34 UTCEPSS rescore
  8. 2026-09-10 03:54 UTCVendor advisory
  9. 2026-09-10 03:54 UTCGHSA enrichment
  10. 2026-09-09 02:37 UTCEG score recompute
  11. 2026-09-09 02:37 UTCVendor advisory
  12. 2026-09-09 02:37 UTCGHSA enrichment
  13. 2026-09-08 22:00 UTCEPSS rescore
  14. 2026-09-07 16:01 UTCEPSS rescore
  15. 2026-09-07 09:34 UTCEG score recompute
  16. 2026-09-07 09:34 UTCGHSA enrichment
  17. 2026-09-06 13:47 UTCEPSS rescore
  18. 2026-09-06 07:59 UTCEG score recompute
  19. 2026-09-06 07:59 UTCGHSA enrichment
  20. 2026-09-05 06:45 UTCEG score recompute
  21. 2026-09-05 06:45 UTCGHSA enrichment
  22. 2026-09-04 05:18 UTCEG score recompute
  23. 2026-09-04 05:18 UTCGHSA enrichment
  24. 2026-09-04 05:06 UTCEPSS rescore
  25. 2026-09-03 03:56 UTCEG score recompute
  26. 2026-09-03 03:56 UTCGHSA enrichment
  27. 2026-09-02 14:11 UTCEPSS rescore
  28. 2026-09-02 02:43 UTCEG score recompute
  29. 2026-09-02 02:43 UTCGHSA enrichment
  30. 2026-09-01 13:53 UTCEPSS rescore
  31. 2026-09-01 04:39 UTCEPSS rescore
  32. 2026-09-01 01:27 UTCGHSA enrichment
  33. 2026-08-31 00:11 UTCEG score recompute
  34. 2026-08-31 00:11 UTCGHSA enrichment
  35. 2026-08-30 19:17 UTCEPSS rescore
  36. 2026-08-30 01:22 UTCEPSS rescore
  37. 2026-08-29 22:57 UTCGHSA enrichment
  38. 2026-08-28 21:43 UTCEG score recompute
  39. 2026-08-28 21:43 UTCGHSA enrichment
  40. 2026-08-28 21:41 UTCEPSS rescore
  41. 2026-08-27 17:24 UTCEG score recompute
  42. 2026-08-27 17:24 UTCGHSA enrichment
  43. 2026-08-27 14:25 UTCEPSS rescore
  44. 2026-08-26 20:42 UTCEG score recompute
  45. 2026-08-26 20:42 UTCGHSA enrichment
  46. 2026-08-26 20:08 UTCEG score recompute
  47. 2026-08-26 20:08 UTCGHSA enrichment
  48. 2026-08-26 15:42 UTCEG score recompute
  49. 2026-08-26 15:42 UTCGHSA enrichment
  50. 2026-08-26 14:46 UTCEPSS rescore
  51. 2026-08-26 01:55 UTCEG score recompute
  52. 2026-08-26 01:55 UTCGHSA enrichment
  53. 2026-08-25 23:49 UTCEG score recompute
  54. 2026-08-25 23:49 UTCGHSA enrichment
  55. 2026-08-25 13:48 UTCEPSS rescore
  56. 2026-08-24 22:35 UTCEG score recompute
  57. 2026-08-24 22:35 UTCGHSA enrichment
  58. 2026-08-23 21:21 UTCEG score recompute
  59. 2026-08-23 21:21 UTCGHSA enrichment
  60. 2026-08-23 00:19 UTCEPSS rescore
  61. 2026-08-22 20:07 UTCEG score recompute
  62. 2026-08-22 20:07 UTCGHSA enrichment
  63. 2026-08-21 23:49 UTCEPSS rescore
  64. 2026-08-21 18:53 UTCEG score recompute
  65. 2026-08-21 18:53 UTCGHSA enrichment
  66. 2026-08-20 22:55 UTCEPSS rescore
  67. 2026-08-20 17:39 UTCGHSA enrichment
  68. 2026-08-19 16:24 UTCEG score recompute
  69. 2026-08-19 15:38 UTCEG score recompute
  70. 2026-08-19 15:37 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-19672?
CVE-2026-19672 is a medium vulnerability published on August 19, 2026. The tarfile module's tar and data extraction filters created directories outside the destination for members whose name leaves the destination and returns to it, such as ../evil/../dest/sub/file. The containment check used the resolved path, but intermediate directories were created from the name…
When was CVE-2026-19672 disclosed?
CVE-2026-19672 was first published in the National Vulnerability Database on August 19, 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-2026-19672 actively exploited?
CVE-2026-19672 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 65.1% of all scored CVEs.
What is the CVSS score of CVE-2026-19672?
CVE-2026-19672 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-19672?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19672, 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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