CVE-2020-14422Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow…
- 5.9MediumCVSS base score
- 12.7%Exploitation in 30 daysEPSS · top 3.7% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10, v3.5.10rc1; v3.6.12; v3.7.9; v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1; v3.9.0, v3.9.0b4, v3.9.0b5, v3.9.0rc1, v3.9.0rc2.
Timeline
Published
- 6 years later
· 6 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 | 3.1 | Medium5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 12.7% · top 3.7% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.
Affected products
n/a
- affected n/a
References
References25
- https://bugs.python.org/issue41004 (opens in a new tab)x_transferred
- https://github.com/python/cpython/pull/20956 (opens in a new tab)x_transferred
- openSUSE-SU-2020:0931 (opens in a new tab)vendor-advisoryx_transferred
- openSUSE-SU-2020:0940 (opens in a new tab)vendor-advisoryx_transferred
- [debian-lts-announce] 20200715 [SECURITY] [DLA 2280-1] python3.5 security update (opens in a new tab)mailing-listx_transferred
- FEDORA-2020-b513391ca8 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2020-705c6ea5be (opens in a new tab)vendor-advisoryx_transferred
- openSUSE-SU-2020:0989 (opens in a new tab)vendor-advisoryx_transferred
- openSUSE-SU-2020:1002 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2020-dfb11916cc (opens in a new tab)vendor-advisoryx_transferred
- USN-4428-1 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2020-c3b07cc5c9 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2020-bb919e575e (opens in a new tab)vendor-advisoryx_transferred
- GLSA-202008-01 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2020-1ddd5273d6 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2020-87c0a0a52d (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2020-efb908b6a8 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2020-d808fdd597 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2020-982b2950db (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2020-c539babb0a (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2020-d30881c970 (opens in a new tab)vendor-advisoryx_transferred
- https://www.oracle.com/security-alerts/cpujan2021.html (opens in a new tab)x_transferred
- https://security.netapp.com/advisory/ntap-20200724-0004/ (opens in a new tab)x_transferred
- [debian-lts-announce] 20230515 [SECURITY] [DLA 3424-1] python-ipaddress security update (opens in a new tab)mailing-listx_transferred
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html (opens in a new tab)
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-2020-6561 (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-2020-14422)Record last updated .