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CVE-2017-7991: Exponent CMS 2.4.1 and earlier has SQL injection via a base64 serialized API key (apikey parameter) in the api

65
This week
CRITICAL 9.8REMOTEUPGRADE

CVE-2017-7991 is a critical-severity flaw (CVSS 9.8) affecting exponent cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Exponent CMS 2.4.1 and earlier has SQL injection via a base64 serialized API key (apikey parameter) in the api function of framework/modules/eaas/controllers/eaasController.php.

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score9.8 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance2.1% (top 18%)
CISA exploited listNo
WeaknessCWE-89
Published2017-04-22
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: exponentcms

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

Am I affected?

Timeline

exponentcms exponent cms UPGRADE
Affected: <= 2.4.1
Fixed in: newer than 2.4.1
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy exponent-cms || rpm -q exponent-cms || exponent-cms --version
2. UPGRADE to newer than 2.4.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade exponent-cms
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade exponent-cms
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-2017-7991?

exponent cms: upgrade to newer than 2.4.1. Exact commands for each OS are on this page.

Is CVE-2017-7991 being exploited?

CVE-2017-7991 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-2017-7991 affect?

CVE-2017-7991 affects exponent cms. Severity is critical (CVSS 9.8). Exponent CMS 2.4.1 and earlier has SQL injection via a base64 serialized API key (apikey parameter) in the api function of framework/modules/eaas/controllers/eaasController.php.

How urgent is CVE-2017-7991?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

References

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