CVE-2020-26215: Open redirect in Jupyter Notebook
Vulnerability summary
CVE-2020-26215 is a medium (CVSS 6.1) URL Redirection to Untrusted Site vulnerability in debian debian_linux. EPSS estimates a 1.23% chance of exploitation in the next 30 days, higher than 68.9% of scored vulnerabilities.
Not severe (CVSS 4.4, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 1Timeline
- 18-11-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Jupyter Notebook before version 6.1.5 has an Open redirect vulnerability. A maliciously crafted link to a notebook server could redirect the browser to a different website. All notebook servers are technically affected, however, these maliciously crafted links can only be reasonably made for known notebook server hosts. A link to your notebook server may appear safe, but ultimately redirect to a spoofed server on the public internet. The issue is patched in version 6.1.5.
CVSS metrics
7 scores · 5 sources · 3 versions- CVE.orgCNA4.4MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:LDiffers
- OSV · PypiEcosystem advisory · calculated4.4MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:LDiffers
- OSV · UbuntuEcosystem advisory · calculated4.4MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:LDiffers
- OSV · DebianEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS trend
Probability
1.23%
Chance of exploitation in the next 30 days
Percentile
69%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.23% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, low-privilege account, user interaction (CVSS vector). Other conditions: not stated in public data.
Debian2 products
- jupyter-notebook< 4.2.3-4+deb9u2 | < 6.1.5-1
- debian_linuxEOL9.0
Opensuse2 products
- python-jupyter_notebook&distro=openSUSE Leap 15.1< 5.7.7-lp151.2.3.1
- python-notebook&distro=openSUSE Leap 15.2< 5.7.8-lp152.2.3.1
Jupyter1 product
- notebook< 6.1.5
Mageia1 product
- jupyter-notebook< 5.7.8-1.1.mga7
PyPI1 product
- notebook< 3cec4bbe21756de9f0c4bccf18cf61d840314d74 | < 6.1.5
Suse1 product
- python-jupyter_notebook&distro=SUSE Package Hub 15 SP1< 5.7.7-bp151.3.3.1
Ubuntu1 product
- jupyter-notebook< 5.2.2-1ubuntu0.1 | < 6.0.3-2ubuntu0.1
7 vendors · 9 products
References
19 links- github.com/jupyter/notebook/security/advisories/GHSA-c7vm-f5p4-8fqhX Refsource CONFIRMWEBAdvisoryREPORTThird Party Advisory
- github.com/jupyter/notebook/commit/3cec4bbe21756de9f0c4bccf18cf61d840314d74X Refsource MISCWEBFIXREPORTPatchThird Party Advisory
- lists.debian.org/debian-lts-announce/2020/12/msg00004.htmlMailing ListX Refsource MLISTWEBThird Party Advisory
- lists.opensuse.org/archives/…Advisory
Show all 19 references
- github.com/jupyter/notebookPACKAGE
- lists.opensuse.org/archives/…Advisory
- lists.opensuse.org/archives/…Advisory