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CVE-2013-7338
Python before 3.3.4 RC1 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a file size value…
- 7.1HighCVSS base score
- 5.1%Exploitation in 30 daysEPSS · top 7.6% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Python before 3.3.4 RC1 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a file size value larger than the size of the zip file to the (1) ZipExtFile.read, (2) ZipExtFile.read(n), (3) ZipExtFile.readlines, (4) ZipFile.extract, or (5) ZipFile.extractall function.
Timeline
ID reserved
By mitre
- 35 days later
· 35 days later
Published
- 10 years later
· 10 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.1 | AV:N/AC:M/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 5.1% · top 7.6% of all CVEs (10 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
n/a
- affected n/a
References
11
- [oss-security] 20140318 CVE request for python/zipfile (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 65179 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- openSUSE-SU-2014:0597 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- http://hg.python.org/cpython/rev/79ea4ce431b1 (opens in a new tab)x_refsource_CONFIRMx_transferred
- GLSA-201503-10 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- APPLE-SA-2015-08-13-2 (opens in a new tab)vendor-advisoryx_refsource_APPLEx_transferred
- http://bugs.python.org/issue20078 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20140319 Re: CVE request for python/zipfile (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://support.apple.com/kb/HT205031 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1029973 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- https://docs.python.org/3.3/whatsnew/changelog.html (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2013-7111 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2013-7338)Record last updated .