CVE-2026-11972

HIGHPre-NVD 8.28.2
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.7% (54th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source

Also known asEUVD-2026-38630 (ENISA EUVD) · GHSA-wqxf-pjxh-hh4h (GitHub Security Advisories)Source: ENISA EUVD

8.2EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 8.2Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

When using the "tarfile" module with a file opened in "streaming mode" (mode="r|") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer.

CVSS
8.2
EG Score
8.2HIGHmedium confidence
EG Risk
37
EG Risk 37/100

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)
Severity82% × 45%
Impact severity (EG Severity): CVSS 8.2 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.7% × 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
0.7%
EPSS %ILE
54th
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 (8.2): severity, escalated by confirmed exploitation. This CVE's 8.2 is its impact severity (EG Severity), not escalated.

EG Severity
8.2 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source
EG Likelihood
0.7% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-10). 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, and whom BOD 26-04 binds: 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.

The score's inputs: 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

June 23, 2026

Last Modified

October 25, 2026

Advisory Details (3)

Auto-updated Jun 24, 2026
Patch available. Sources: github_pr.
Web page

Mailman 3 [CVE-2026-11972] tarfile opened in streaming mode mishandles EOF - Security-announce - python.org

https://mail.python.org/archives/list/[email protected]/thread/AXPSKKTSRKXTTJULW3XSIC74WZNAAPPB/
GitHub pull request

gh-151981: Make tarfile._Stream.seek break at EOF

Fix merged in python/cpython PR #151982 on 2026-06-23 — awaiting tagged release

https://github.com/python/cpython/pull/151982
Web page

tarfile._Stream.seek ignores EOF · Issue #151981 · python/cpython · GitHub

https://github.com/python/cpython/issues/151981

Patch Availability(6)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatpython3-13-main-3.13.15-1.hum12026-08-13redhat
redhatpython3-14-main-3.14.7-1.hum12026-08-13redhat
redhatpython3-14-main-3.14.6-1.2.hum12026-07-05redhat
redhatpython3-11-main-3.11.15-4.4.hum12026-07-05redhat
redhatpython3-13-main-3.13.14-1.2.hum12026-07-05redhat
redhatpython3-12-main-3.12.13-3.3.hum12026-07-05redhat

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

(14 across 8 ecosystems)
Debian:11(3)
PackageVulnerable rangeFix by version rangeDependents
pypy37.3.10+dfsg-1 ... 7.3.9+dfsg-5 (53 versions)
  • every version on: no fix on record
—
python2.72.7.18-10 ... 2.7.18-9 (10 versions)
  • every version on: no fix on record
—
python3.93.9.10-1 ... 3.9.9-4 (29 versions)
  • every version on: no fix on record
—
Debian:14(3)
PackageVulnerable rangeFix by version rangeDependents
pypy37.3.19+dfsg-2 ... 7.3.23+dfsg-2 (12 versions)
  • every version up to 8.0.0+dfsg-1: fixed in 8.0.0+dfsg-1
—
python3.133.13.11-1 ... 3.13.9-1 (8 versions)
  • every version up to 3.13.15-1: fixed in 3.13.15-1
—
python3.143.14.0-1 ... 3.14.6-1 (24 versions)
  • every version up to 3.14.7-1: fixed in 3.14.7-1
—
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
pypy37.3.11+dfsg-2 ... 8.0.1+dfsg-1 (32 versions)
  • every version on: no fix on record
—
python3.113.11.2-6 ... 3.11.9-1 (29 versions)
  • every version on: no fix on record
—
Debian:13(2)
PackageVulnerable rangeFix by version rangeDependents
pypy37.3.19+dfsg-2 ... 8.0.1+dfsg-1 (14 versions)
  • every version on: no fix on record
—
python3.133.13.5-2, 3.13.5-2+deb13u1, 3.13.5-2+deb13u2, 3.13.5-2+deb13u3, 3.13.5-2+deb13u4
  • every version up to 3.13.5-2+deb13u5: fixed in 3.13.5-2+deb13u5
—
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.12.14-r0: fixed in 3.12.14-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.12.14-r0: fixed in 3.12.14-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.12.14-r0: fixed in 3.12.14-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.14.7-r0: fixed in 3.14.7-r0
—

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 43× 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 its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS → 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 392 rows 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 292 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 16:33 UTCEPSS rescoreEPSS 0.7% · 54th percentile
  2. 2026-11-11 16:38 UTCEPSS rescoreEPSS 0.7% · 54th percentile
  3. 2026-11-11 14:35 UTCEchelonGraph re-scored
  4. 2026-11-11 14:35 UTCVendor advisory
  5. 2026-11-11 14:35 UTCGHSA enrichmentGHSA-wqxf-pjxh-hh4h · GitHub severity HIGH
  6. 2026-11-10 16:42 UTCEPSS rescoreEPSS 0.7% · 54th percentile
  7. 2026-11-09 16:34 UTCEPSS rescoreEPSS 0.7% · 54th percentile
  8. 2026-11-08 16:38 UTCEPSS rescoreEPSS 0.7% · 54th percentile
  9. 2026-11-07 16:38 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  10. 2026-11-06 16:36 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  11. 2026-11-05 16:36 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  12. 2026-11-04 16:34 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  13. 2026-11-04 05:40 UTCEchelonGraph re-scored
  14. 2026-11-04 05:40 UTCVendor advisory
  15. 2026-11-04 05:40 UTCGHSA enrichmentGHSA-wqxf-pjxh-hh4h · GitHub severity HIGH
  16. 2026-11-03 16:46 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  17. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  18. 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  19. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  20. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  21. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  22. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  23. 2026-10-27 20:46 UTCEchelonGraph re-scored
  24. 2026-10-27 20:46 UTCVendor advisory
  25. 2026-10-27 20:45 UTCGHSA enrichmentGHSA-wqxf-pjxh-hh4h · GitHub severity HIGH
Show 75 more
  1. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  2. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  3. 2026-10-25 23:33 UTCEchelonGraph re-scored
  4. 2026-10-25 23:33 UTCVendor advisory
  5. 2026-10-25 23:33 UTCGHSA enrichmentGHSA-wqxf-pjxh-hh4h · GitHub severity HIGH
  6. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  7. 2026-10-25 14:50 UTCEchelonGraph re-scored
  8. 2026-10-25 03:53 UTCEchelonGraph re-scored
  9. 2026-10-25 03:53 UTCVendor advisory
  10. 2026-10-25 03:53 UTCGHSA enrichmentGHSA-wqxf-pjxh-hh4h · GitHub severity HIGH
  11. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  12. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  13. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  14. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  15. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  16. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  17. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  18. 2026-10-18 05:04 UTCEchelonGraph re-scored
  19. 2026-10-17 18:58 UTCEchelonGraph re-scored
  20. 2026-10-17 18:58 UTCVendor advisory
  21. 2026-10-17 18:58 UTCGHSA enrichmentGHSA-wqxf-pjxh-hh4h · GitHub severity HIGH
  22. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  23. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  24. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  25. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  26. 2026-10-14 06:54 UTCOSV refresh
  27. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  28. 2026-10-12 16:37 UTCEchelonGraph re-scored
  29. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  30. 2026-10-11 20:12 UTCEchelonGraph re-scored
  31. 2026-10-11 18:25 UTCEchelonGraph re-scored
  32. 2026-10-11 14:58 UTCEchelonGraph re-scored
  33. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  34. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  35. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  36. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  37. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  38. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  39. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  40. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  41. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  42. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  43. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  44. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  45. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  46. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  47. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.4% · 38th percentile
  48. 2026-09-23 11:56 UTCEchelonGraph re-scored
  49. 2026-09-23 11:56 UTCVendor advisory
  50. 2026-09-23 11:56 UTCGHSA enrichmentGHSA-wqxf-pjxh-hh4h · GitHub severity HIGH
  51. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.4% · 38th percentile
  52. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.4% · 38th percentile
  53. 2026-09-18 10:20 UTCEchelonGraph re-scored
  54. 2026-09-18 10:20 UTCVendor advisory
  55. 2026-09-18 10:20 UTCGHSA enrichmentGHSA-wqxf-pjxh-hh4h · GitHub severity HIGH
  56. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  57. 2026-09-14 02:04 UTCEchelonGraph re-scored
  58. 2026-09-14 02:04 UTCVendor advisory
  59. 2026-09-14 02:04 UTCGHSA enrichmentGHSA-wqxf-pjxh-hh4h · GitHub severity HIGH
  60. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  61. 2026-09-13 12:20 UTCEchelonGraph re-scored
  62. 2026-09-13 12:20 UTCVendor advisory
  63. 2026-09-13 12:20 UTCGHSA enrichmentGHSA-wqxf-pjxh-hh4h · GitHub severity HIGH
  64. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  65. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  66. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  67. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  68. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  69. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  70. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  71. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  72. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  73. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  74. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  75. 2026-08-30 20:24 UTCEchelonGraph re-scored

Frequently asked(5)

What is CVE-2026-11972?
CVE-2026-11972 is a high-severity vulnerability; its CVE record was published on June 23, 2026. When using the "tarfile" module with a file opened in "streaming mode" (mode="r|") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer.
When was the CVE record for CVE-2026-11972 published?
The CVE record for CVE-2026-11972 was published on June 23, 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 October 25, 2026; the record at its source may have been updated since.
Is CVE-2026-11972 actively exploited?
CVE-2026-11972 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (54th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-11972?
CVE-2026-11972 has a CVSS base score of 8.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-11972?
A fix for CVE-2026-11972 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-11972 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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