CVE-2021-32812: Monkshu is an enterprise application server for mobile apps (iOS and Android), responsive HTML 5 apps, and JSO

Routine

MEDIUM 4.6DOWNGRADE

CVE-2021-32812 is a medium-severity flaw (CVSS 4.6) affecting monkshu. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Monkshu is an enterprise application server for mobile apps (iOS and Android), responsive HTML 5 apps, and JSON API services. In version 2.90 and earlier, there is a reflected cross-site scripting vulnerability in frontend HTTP server. The attacker can send in a carefully crafted URL along with a known bug in the server which will cause a 500 error, and the response will then embed the URL provided by the hacker. The impact is moderate as the hac

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.6 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.8% (top 42%)
CISA exploited list	No
Weakness	CWE-79, CWE-116
Published	2021-08-02
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: tekmonks

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

Am I affected?

Timeline

2021-08-02 23:15 UTCPublished CVE record published
2026-06-17 03:53 UTCUpdated Record last modified

tekmonks monkshu DOWNGRADE

Affected: 2.90

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.90

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.90 (Debian / Ubuntu)

apt-cache madison monkshu sudo apt install monkshu=<VERSION_BEFORE_2.90> sudo apt-mark hold monkshu

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

dnf --showduplicates list monkshu sudo dnf downgrade monkshu-<VERSION_BEFORE_2.90> sudo dnf versionlock add monkshu

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-2021-32812?

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

Is CVE-2021-32812 being exploited?

CVE-2021-32812 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-2021-32812 affect?

CVE-2021-32812 affects monkshu. Severity is medium (CVSS 4.6). Monkshu is an enterprise application server for mobile apps (iOS and Android), responsive HTML 5 apps, and JSON API services. In version 2.90 and earlier, there is a reflected cross-site scripting vulnerability in frontend HTTP server. The

How urgent is CVE-2021-32812?

Priority 31/100. No elevated risk signals yet.

Software pages

Android vulnerabilities · iOS vulnerabilities

References

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