CVE-2020-11000: GreenBrowser before version 1.2 has a vulnerability where apps that rely on URL Parsing to verify that a given

Q: How do I fix CVE-2020-11000?

greenbrowser: upgrade to 1.2. Exact commands for each OS are on this page.

Q: Is CVE-2020-11000 being exploited?

CVE-2020-11000 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-11000 affect?

CVE-2020-11000 affects greenbrowser. Severity is medium (CVSS 5.7). GreenBrowser before version 1.2 has a vulnerability where apps that rely on URL Parsing to verify that a given URL is pointing to a trust server may be susceptible to many different ways to get URL parsing and verification wrong, which allo

Q: How urgent is CVE-2020-11000?

Priority 37/100. No elevated risk signals yet.

Routine

MEDIUM 5.7UPGRADE

CVE-2020-11000 is a medium-severity flaw (CVSS 5.7) affecting greenbrowser. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

GreenBrowser before version 1.2 has a vulnerability where apps that rely on URL Parsing to verify that a given URL is pointing to a trust server may be susceptible to many different ways to get URL parsing and verification wrong, which allows an attacker to circumvent the access control. This problem has been patched in version 1.2.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.7 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	1.2% (top 31%)
CISA exploited list	No
Weakness	CWE-939
Published	2020-04-08
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: greenbrowser project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-04-08 17:15 UTCPublished CVE record published
2026-06-17 02:48 UTCUpdated Record last modified

greenbrowser project greenbrowser UPGRADE

Affected: < 1.2

Fixed in: 1.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy greenbrowser || rpm -q greenbrowser || greenbrowser --version

2. UPGRADE to 1.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade greenbrowser

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade greenbrowser

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-11000?

greenbrowser: upgrade to 1.2. Exact commands for each OS are on this page.

Is CVE-2020-11000 being exploited?

CVE-2020-11000 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-11000 affect?

CVE-2020-11000 affects greenbrowser. Severity is medium (CVSS 5.7). GreenBrowser before version 1.2 has a vulnerability where apps that rely on URL Parsing to verify that a given URL is pointing to a trust server may be susceptible to many different ways to get URL parsing and verification wrong, which allo

How urgent is CVE-2020-11000?

Priority 37/100. No elevated risk signals yet.

References

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