CVE-2021-43700: An issue was discovered in ApiManager 1.1

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2021-43700 is a critical-severity flaw (CVSS 9.8) affecting apimanager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in ApiManager 1.1. there is sql injection vulnerability that can use in /index.php?act=api&tag=8.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-89
Published	2022-03-24
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: apimanager project

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

Am I affected?

Timeline

2022-03-24 13:15 UTCPublished CVE record published
2026-06-17 04:11 UTCUpdated Record last modified

apimanager project apimanager DOWNGRADE

Affected: 1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.1 (Debian / Ubuntu)

apt-cache madison apimanager sudo apt install apimanager=<VERSION_BEFORE_1.1> sudo apt-mark hold apimanager

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

dnf --showduplicates list apimanager sudo dnf downgrade apimanager-<VERSION_BEFORE_1.1> sudo dnf versionlock add apimanager

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-2021-43700?

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

Is CVE-2021-43700 being exploited?

CVE-2021-43700 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-2021-43700 affect?

CVE-2021-43700 affects apimanager. Severity is critical (CVSS 9.8). An issue was discovered in ApiManager 1.1. there is sql injection vulnerability that can use in /index.php?act=api&tag=8.

How urgent is CVE-2021-43700?

Priority 61/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

References

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