Answer in brief
CVE-2026-11972 records a High severity (CVSS 8.2) vulnerability in tarfile opened in streaming mode mishandles EOF. The current sources do not mark it as known exploited. The current feed maps Python Software Foundation/CPython (generic), Python Software Foundation/CPython (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-11972 records a High severity (CVSS 8.2) vulnerability in tarfile opened in streaming mode mishandles EOF. The current sources do not mark it as known exploited. The current feed maps Python Software Foundation/CPython (generic), Python Software Foundation/CPython (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Python Software Foundation/CPython (generic), Python Software Foundation/CPython (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Python Software Foundation/CPythongeneric | >=0 <3.15.0b4 | 3.15.0b4 |
| Python Software Foundation/CPythongeneric | >=0 <3.14.7 || >=3.15.0a1 <3.15.0b4 | 3.14.7, 3.15.0b4 |
Published upstream
Jun 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 24, 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.
Quoted source text, attributed separately from HOL analysis.
CVSS is 8.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Python Software Foundation/CPython (generic), Python Software Foundation/CPython (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Python Software Foundation/CPythongeneric | >=0 <3.15.0b4 | 3.15.0b4 |
| Python Software Foundation/CPythongeneric | >=0 <3.14.7 || >=3.15.0a1 <3.15.0b4 | 3.14.7, 3.15.0b4 |
Published upstream
Jun 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 24, 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.
Quoted source text, attributed separately from HOL analysis.