6.1

CVE-2019-18348: python

Modified
AliasesALPINE-CVE-2019-18348SUSE-SU-2020:0750-1UBUNTU-CVE-2019-18348
Published 23-10-2019Last modified 14-10-2026

Vulnerability summary

CVE-2019-18348 is a medium (CVSS 6.1) vulnerability in python. EPSS estimates a 3.51% chance of exploitation in the next 30 days, higher than 89.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.4, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.1/10
010
Medium · v3.1 (NVD)
EPSS score
3.51%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 18 · Related 15
DLA-2280-1OPENSUSE-SU-2020:0696-1OPENSUSE-SU-2020:2332-1OPENSUSE-SU-2020:2333-1OPENSUSE-SU-2024:11202-1OPENSUSE-SU-2024:11284-1

Timeline

  1. 23-10-2019
    PublishedVulnerability first disclosed.
  2. 14-10-2026
    Last modifiedVulnerability information updated.

Description

An issue was discovered in urllib2 in Python 2.x through 2.7.17 and urllib in Python 3.x through 3.8.0. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \r\n (specifically in the host component of a URL) followed by an HTTP header. This is similar to the CVE-2019-9740 query string issue and the CVE-2019-9947 path string issue. (This is not exploitable when glibc has CVE-2016-10739 fixed.). This is fixed in: v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1; v3.6.11, v3.6.11rc1, v3.6.12; v3.7.8, v3.7.8rc1, v3.7.9; v3.8.3, v3.8.3rc1, v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

3.51%

Chance of exploitation in the next 30 days

Percentile

89%

Versus all other CVEs

30-day change

No change 0.00 pp

From 3.51% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu6 products
  • python2.7< 2.7.6-8ubuntu0.6+esm5 | < 2.7.12-1ubuntu0~16.04.11 | < 2.7.17-1~18.04ubuntu1
  • python3.4< 3.4.3-1ubuntu1~14.04.7+esm6
  • python3.5< 3.5.2-2ubuntu0~16.04.4~14.04.1+esm1 | < 3.5.2-2ubuntu0~16.04.10
  • python3.6< 3.6.9-1~18.04ubuntu1
  • python3.7< 3.7.5-2ubuntu1~18.04.2+esm3
Suse4 products
  • python36-base&distro=SUSE Linux Enterprise Server 12 SP5< 3.6.10-4.9.1
  • python36-base&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP5< 3.6.10-4.9.1
  • python36&distro=SUSE Linux Enterprise Server 12 SP5< 3.6.10-4.9.1
  • python36&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP5< 3.6.10-4.9.1
Alpine2 products
  • python2< 2.7.18-r0
  • python2-tkinter< 2.7.18-r0
Debian1 product
  • python2.7< 2.7.18~rc1-1
Python1 product
  • python≥ 2.0, ≤ 2.7.17 | ≥ 3.0, < 3.5.10 | ≥ 3.6.0, < 3.6.11 | ≥ 3.7.0, < 3.7.8 | ≥ 3.8.0, < 3.8.3

5 vendors · 14 products

References

25 links
Show all 25 references