6.1

CVE-2018-25091: python urllib3 URL Redirection to Untrusted Site

Modified
AliasesGHSA-gwvm-45gx-3cf8PYSEC-2023-207UBUNTU-CVE-2018-25091
Published 15-10-2023Last modified 16-09-2024

Vulnerability summary

CVE-2018-25091 is a medium (CVSS 6.1) URL Redirection to Untrusted Site vulnerability in python urllib3. EPSS estimates a 0.59% chance of exploitation in the next 30 days, higher than 48.4% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.1, 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
0.59%
0%100%
Low · +0.08 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 5 · Related 3
DLA-3610-1RHSA-2024:2988SUSE-SU-2023:4352-1USN-6473-1USN-6473-2

Timeline

  1. 15-10-2023
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

urllib3 before 1.24.2 does not remove the authorization HTTP header when following a cross-origin redirect (i.e., a redirect that differs in host, port, or scheme). This can allow for credentials in the authorization header to be exposed to unintended hosts or transmitted in cleartext. NOTE: this issue exists because of an incomplete fix for CVE-2018-20060 (which was case-sensitive).

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.59%

Chance of exploitation in the next 30 days

Percentile

48%

Versus all other CVEs

30-day change

Increase +0.08 pp

From 0.52% 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.

Ubuntu2 products
  • python-pipAll versions (No fix recorded) | < 8.1.1-2ubuntu0.6+esm6 | < 9.0.1-2.3~ubuntu1.18.04.8+esm2
  • python-urllib3All versions (No fix recorded) | < 1.13.1-2ubuntu0.16.04.4+esm1 | < 1.22-1ubuntu0.18.04.2+esm1
Debian1 product
  • python-urllib3< 1.25.6-4
PyPI1 product
  • urllib3< adb358f8e06865406d1f05e581a16cbea2136fbc | < 1.24.2
Python1 product

4 vendors · 5 products

References

12 links
Show all 12 references