The "tarfile" module would still apply normalization of AREGTYPE (\x00) blocks to DIRTYPE, even while processing a multi-block member such as GNUTYPE_LONGNAME or GNUTYPE_LONGLINK. This could result in a crafted tar archive being misinterpreted by the tarfile module compared to other implementations.
CVE-2025-13462
“▲” beside the score: it is higher than NVD's CVSS score.
Score 9.8 from GitHub Security Advisory (severity: LOW) published 2026-03-12. NVD baseline CVSS 3.3; sources differ by 6.5.
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 3.3
- EG Score
- 9.8CRITICALmedium confidence
- EG Risk
- 44EG Risk 44/100
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)Severity98% × 45%Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.2% × 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
- 0.2%
- EPSS %ILE
- 5th
- 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 (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.
- EG Severity
- 9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-19). 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: 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.
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
March 12, 2026
Last Modified
August 13, 2026
Advisory Details (9)
Auto-updated Jun 5, 2026Mailman 3 [CVE-2025-13462]: tarfile: Skip DIRTYPE normalization during GNU long name and link handling - Security-announce - python.org
https://mail.python.org/archives/list/[email protected]/thread/EOMI5I66ZMKQ2INNFT6T7IAIKUGPZYIE/gh-141707: Skip TarInfo DIRTYPE normalization during GNU long name handling
Fix merged in python/cpython PR #143934 on 2026-03-11 — awaiting tagged release
https://github.com/python/cpython/pull/143934Incorrect parsing of TarInfo header when GNU long name and type AREGTYPE are combined · Issue #141707 · python/cpython · GitHub
https://github.com/python/cpython/issues/141707commit d10950739a78 (python/cpython)
Fix landed in python/cpython commit d10950739a78 — awaiting tagged release
https://github.com/python/cpython/commit/d10950739a78f54d0718d88fb5a868374603c084commit ae99fe3a33b4 (python/cpython)
Fix landed in python/cpython commit ae99fe3a33b4 — awaiting tagged release
https://github.com/python/cpython/commit/ae99fe3a33b43e303a05f012815cef60b611a9c7commit 9a23b753552a (python/cpython)
Fix landed in python/cpython commit 9a23b753552a — awaiting tagged release
https://github.com/python/cpython/commit/9a23b753552afa28e3a2f4d8863572fc66479406commit 7ad3093d76a7 (python/cpython)
Fix landed in python/cpython commit 7ad3093d76a7 — awaiting tagged release
https://github.com/python/cpython/commit/7ad3093d76a748af55bdb1d2e8aad3638163b017commit 72dde1016493 (python/cpython)
Fix landed in python/cpython commit 72dde1016493 — awaiting tagged release
https://github.com/python/cpython/commit/72dde1016493c52abe857fc4a7bf6c40138b4114commit 42d754e34c06 (python/cpython)
Fix landed in python/cpython commit 42d754e34c06 — awaiting tagged release
https://github.com/python/cpython/commit/42d754e34c06e57ad6b8e7f92f32af679912d8abVendor Advisories for CVE-2025-13462(6)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- CVE-2025-13462Microsoft Security Response Center (MSRC)Low
tarfile: Skip DIRTYPE normalization during GNU LONGNAME/LONGLINK handling
- RHSA-2026:11324Red Hat Product SecurityLow
Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
- RHSA-2026:10118Red Hat Product SecurityMedium
Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
- RHSA-2026:7661Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
- RHSA-2026:7443Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
- GHSA-9qpv-486p-2v4hGitHub Security AdvisoriesLow
The "tarfile" module would still apply normalization of AREGTYPE (\x00) blocks to DIRTYPE, even...
Patch Availability(5)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| ubuntu | python3.10-venv (3.10.12-1~22.04.16) @ jammy | 2026-10-20 | ubuntu |
| redhat | python3-11-main-3.11.15-4.2.hum1 | 2026-04-28 | redhat |
| redhat | python3-12-main-3.12.13-3.1.hum1 | 2026-04-23 | redhat |
| redhat | python3-14-main-3.14.4-1.hum1 | 2026-04-11 | redhat |
| redhat | python3-13-main-3.13.13-1.hum1 | 2026-04-10 | redhat |
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
(6 across 4 ecosystems)
Debian:11(2)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python2.7 | 2.7.18-10 ... 2.7.18-9 (10 versions) |
| — |
| python3.9 | 3.9.2-1 ... 3.9.2-1+deb11u6 (7 versions) |
| — |
Debian:14(2)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python3.13 | 3.13.11-1 ... 3.13.9-1 (7 versions) |
| — |
| python3.14 | 3.14.0-1 ... 3.14.3-3 (17 versions) |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python3.11 | 3.11.2-6 ... 3.11.2-6+deb12u7 (8 versions) |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python3.13 | 3.13.5-2 |
| — |
Weakness Classification(3)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(1)
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 28× in last 7d / 55× 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 97 of 340 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. 3 repeat rows among the latest 100 are merged into the row they repeat. The 243 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-10-20 11:35 UTCEG score recompute
- 2026-10-20 11:35 UTCVendor advisory
- 2026-10-20 11:35 UTCGHSA enrichmentGHSA-9qpv-486p-2v4h · GitHub severity LOW · GitHub CVSS 9.8
- 2026-10-19 16:30 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-10-19 12:32 UTCEG score recompute
- 2026-10-19 12:32 UTCVendor advisory
- 2026-10-19 12:32 UTCGHSA enrichmentGHSA-9qpv-486p-2v4h · GitHub severity LOW · GitHub CVSS 9.8
- 2026-10-18 16:30 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-10-18 10:50 UTCVendor advisory
- 2026-10-18 10:49 UTCGHSA enrichmentGHSA-9qpv-486p-2v4h · GitHub severity LOW · GitHub CVSS 9.8
- 2026-10-18 05:50 UTCEG score recompute
- 2026-10-17 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-10-17 07:24 UTCEG score recompute
- 2026-10-17 07:24 UTCVendor advisory
- 2026-10-17 07:24 UTCGHSA enrichmentGHSA-9qpv-486p-2v4h · GitHub severity LOW · GitHub CVSS 9.8
- 2026-10-16 16:37 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-10-16 08:24 UTCEG score recompute
- 2026-10-16 08:24 UTCVendor advisory
- 2026-10-16 08:24 UTCGHSA enrichmentGHSA-9qpv-486p-2v4h · GitHub severity LOW · GitHub CVSS 9.8
- 2026-10-15 16:30 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-10-15 07:32 UTCEG score recompute
- 2026-10-15 07:32 UTCVendor advisory
- 2026-10-15 07:32 UTCGHSA enrichmentGHSA-9qpv-486p-2v4h · GitHub severity LOW · GitHub CVSS 9.8
- 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-10-14 03:29 UTCEG score recompute
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- 2026-10-14 03:29 UTCVendor advisory
- 2026-10-14 03:29 UTCGHSA enrichmentGHSA-9qpv-486p-2v4h · GitHub severity LOW · GitHub CVSS 9.8
- 2026-10-13 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-10-12 23:29 UTCVendor advisory
- 2026-10-12 23:29 UTCGHSA enrichmentGHSA-9qpv-486p-2v4h · GitHub severity LOW · GitHub CVSS 9.8
- 2026-10-12 17:24 UTCEG score recompute
- 2026-10-12 12:22 UTCVendor advisory
- 2026-10-12 12:22 UTCGHSA enrichmentGHSA-9qpv-486p-2v4h · GitHub severity LOW · GitHub CVSS 9.8
- 2026-10-11 20:55 UTCEG score recompute
- 2026-10-11 19:05 UTCEG score recompute
- 2026-10-11 15:45 UTCEG score recompute
- 2026-10-11 13:46 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-10-11 11:47 UTCOSV refresh
- 2026-10-10 19:58 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-10-08 17:08 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-10-06 15:16 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.2% · 4th percentile
- 2026-09-26 15:57 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-24 14:02 UTCEPSS rescoreEPSS 0.2% · 4th percentile
- 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-09-22 14:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-09-22 00:15 UTCOSV refresh
- 2026-09-20 20:14 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-09-16 14:06 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-09-16 05:13 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-15 03:08 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-13 16:45 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-12 14:59 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-11 14:51 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-11 09:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-10 09:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-08 21:59 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-04 13:59 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-04 05:05 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-02 19:40 UTCOSV refresh
- 2026-09-01 13:52 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-01 04:38 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-08-30 19:16 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-08-26 14:45 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-08-25 13:47 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-08-24 14:15 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-08-23 00:18 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-08-20 22:54 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-08-19 17:02 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-08-18 13:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-08-17 13:46 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-08-16 14:55 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-08-16 11:43 UTCEG score recompute
- 2026-08-16 11:43 UTCVendor advisory
- 2026-08-16 11:43 UTCGHSA enrichmentGHSA-9qpv-486p-2v4h · GitHub severity LOW · GitHub CVSS 9.8
- 2026-08-16 02:13 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-08-15 01:29 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-08-14 23:59 UTCVendor advisory
- 2026-08-14 23:59 UTCGHSA enrichmentGHSA-9qpv-486p-2v4h · GitHub severity LOW · GitHub CVSS 9.8
- 2026-08-14 20:05 UTCVendor advisory
- 2026-08-14 20:05 UTCGHSA enrichmentGHSA-9qpv-486p-2v4h · GitHub severity LOW · GitHub CVSS 9.8
- 2026-08-14 15:32 UTCVendor advisory
- 2026-08-14 15:32 UTCGHSA enrichmentGHSA-9qpv-486p-2v4h · GitHub severity LOW · GitHub CVSS 9.8
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownDebian:14:python3.14
Same vendor
10 shownredhat:RHSA-2026:10118 · redhat:RHSA-2026:7443
Frequently asked(5)
What is CVE-2025-13462?
When was the CVE record for CVE-2025-13462 published?
Is CVE-2025-13462 actively exploited?
What is the CVSS score of CVE-2025-13462?
How do I remediate CVE-2025-13462?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-13462
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