CVE-2020-26215

mediumpriority · track · 24EPSS 0.012 · 69 %ileEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.23% (69th) EPSS
CVSS 5.8 · medium
Is it mine?
6 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

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.

01

cvss

Technical severity, 0–10. One row per scoring source.

6.1
010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 4.9
v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 2.7
v3.14.4mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:Lsecondary · ENISA EU
v3.14.4mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:Lsecondary · security-advisories@github.comexploitability 1.3 · impact 2.7
v3.14.4mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:Lsecondary · OSV
v3.15.6mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)
02

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-601USprimaryCWE-601US
03

affected products (6)

Products and version ranges known to be affected.

04

advisories (4)

Vendor and ecosystem advisories describing this.

  • GHSA-c7vm-f5p4-8fqhOpen redirect in Jupyter Notebook2020-11-18ghsa · osvUS

    ### Impact _What kind of vulnerability is it? Who is impacted?_ 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. ### Patches _Has the problem been patched? What versions should users upgrade to?_ Patched in notebook 6.1.5 ### References [OWASP page on open redirects](https://cheatsheetseries.owasp.org/cheatsheets/Unvalidated_Redirects_and_Forwards_Cheat_Sheet.html) ### For more information If you have any questions or comments about this advisory, or vulnerabilities to report, please email our security list [security@ipython.org](mailto:security@ipython.org). Credit: zhuonan li of Alibaba Application Security Team

  • BIT-jupyter-base-notebook-2020-26215Open redirect in Jupyter Notebook2024-03-06vendor · osvUS

    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.

  • BIT-jupyter-notebook-2020-26215Open redirect in Jupyter Notebook2024-03-06vendor · osvUS

    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.

  • PYSEC-2020-2152020-11-18vendor · osvUS

    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.

05

also known as (8)

Other names and identifiers for this entity.

06

sources

Which sources assert this record, and when.

cnnvdenisa_euvdosvnvdNVDCVE.orgMITRE
published 2020-11-18modified 2026-06-17
08

references (13)

External citations — patches, advisories, analysis.

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