CVE-2021-33961: A Cross Site Scripting (XSS) vulnerabililty exists in enhanced-github v5.0.11 via the file name parameter.

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MEDIUM 6.1DOWNGRADE

CVE-2021-33961 is a medium-severity flaw (CVSS 6.1) affecting enhanced-github. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Cross Site Scripting (XSS) vulnerabililty exists in enhanced-github v5.0.11 via the file name parameter.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-03-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: enhanced-github project

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

Am I affected?

Timeline

2022-03-22 21:15 UTCPublished CVE record published
2026-06-17 03:55 UTCUpdated Record last modified

enhanced-github project enhanced-github DOWNGRADE

Affected: 5.0.11

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.0.11

1. Check installed version

apt-cache policy enhanced-github || rpm -q enhanced-github || enhanced-github --version

2. No fixed release: DOWNGRADE to a release before 5.0.11 (Debian / Ubuntu)

apt-cache madison enhanced-github sudo apt install enhanced-github=<VERSION_BEFORE_5.0.11> sudo apt-mark hold enhanced-github

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list enhanced-github sudo dnf downgrade enhanced-github-<VERSION_BEFORE_5.0.11> sudo dnf versionlock add enhanced-github

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2021-33961?

enhanced-github: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-33961 being exploited?

CVE-2021-33961 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-2021-33961 affect?

CVE-2021-33961 affects enhanced-github. Severity is medium (CVSS 6.1). A Cross Site Scripting (XSS) vulnerabililty exists in enhanced-github v5.0.11 via the file name parameter.

How urgent is CVE-2021-33961?

Priority 40/100. Public exploit reference

Software pages

GitHub vulnerabilities

References

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