CVE-2021-41747: Cross-Site Scripting (XSS) vulnerability exists in Csdn APP 4.10.0, which can be exploited by attackers to obt

Routine

MEDIUM 6.1DOWNGRADE

CVE-2021-41747 is a medium-severity flaw (CVSS 6.1) affecting csdn app. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-Site Scripting (XSS) vulnerability exists in Csdn APP 4.10.0, which can be exploited by attackers to obtain sensitive information such as user cookies.

Why this priority

No elevated risk signals yet

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	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-10-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: csdn

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

Am I affected?

Timeline

2021-10-22 12:15 UTCPublished CVE record published
2026-06-17 04:08 UTCUpdated Record last modified

csdn csdn app DOWNGRADE

Affected: 4.10.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.10.0

1. Check installed version

apt-cache policy csdn-app || rpm -q csdn-app || csdn-app --version

2. No fixed release: DOWNGRADE to a release before 4.10.0 (Debian / Ubuntu)

apt-cache madison csdn-app sudo apt install csdn-app=<VERSION_BEFORE_4.10.0> sudo apt-mark hold csdn-app

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

dnf --showduplicates list csdn-app sudo dnf downgrade csdn-app-<VERSION_BEFORE_4.10.0> sudo dnf versionlock add csdn-app

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-2021-41747?

csdn app: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-41747 being exploited?

CVE-2021-41747 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-2021-41747 affect?

CVE-2021-41747 affects csdn app. Severity is medium (CVSS 6.1). Cross-Site Scripting (XSS) vulnerability exists in Csdn APP 4.10.0, which can be exploited by attackers to obtain sensitive information such as user cookies.

How urgent is CVE-2021-41747?

Priority 34/100. No elevated risk signals yet.

References

← Back to latest CVEs