CVE-2022-23049: Exponent CMS 2.6.0patch2 allows an authenticated user to inject persistent JavaScript code on the "User-Agent"

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MEDIUM 5.4DOWNGRADE

CVE-2022-23049 is a medium-severity flaw (CVSS 5.4) affecting exponent cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Exponent CMS 2.6.0patch2 allows an authenticated user to inject persistent JavaScript code on the "User-Agent" header when logging in. When an administrator user visits the "User Sessions" tab, the JavaScript will be triggered allowing an attacker to compromise the administrator session.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	3.0% (top 13%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-02-09
Last modified	2026-06-17

Publisher (CNA): Fluid Attacks · Vendor: exponentcms

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

Am I affected?

Timeline

2022-02-09 23:15 UTCPublished CVE record published
2026-06-17 04:29 UTCUpdated Record last modified

exponentcms exponent cms DOWNGRADE

Affected: 2.6.0 patch2

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.6.0

1. Check installed version

apt-cache policy exponent-cms || rpm -q exponent-cms || exponent-cms --version

2. No fixed release: DOWNGRADE to a release before 2.6.0 (Debian / Ubuntu)

apt-cache madison exponent-cms sudo apt install exponent-cms=<VERSION_BEFORE_2.6.0> sudo apt-mark hold exponent-cms

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

dnf --showduplicates list exponent-cms sudo dnf downgrade exponent-cms-<VERSION_BEFORE_2.6.0> sudo dnf versionlock add exponent-cms

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-2022-23049?

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

Is CVE-2022-23049 being exploited?

CVE-2022-23049 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-2022-23049 affect?

CVE-2022-23049 affects exponent cms. Severity is medium (CVSS 5.4). Exponent CMS 2.6.0patch2 allows an authenticated user to inject persistent JavaScript code on the "User-Agent" header when logging in. When an administrator user visits the "User Sessions" tab, the JavaScript will be triggered allowing an a

How urgent is CVE-2022-23049?

Priority 46/100. Public exploit reference

Related CVEs

CVE-2022-23048 HIGH 7.2 DOWNGRADE Exponent CMS 2.6.0patch2 allows an authenticated admin user to upload a malicious extension in the format of a
CVE-2022-23047 MEDIUM 4.8 DOWNGRADE Exponent CMS 2.6.0patch2 allows an authenticated admin user to inject persistent JavaScript code inside the "S
CVE-2021-32441 HIGH 7.5 UPGRADE SQL Injection vulnerability in Exponent-CMS v.2.6.0 fixed in 2.7.0 allows attackers to gain access to sensitiv
CVE-2017-8085 MEDIUM 6.1 UPGRADE In Exponent CMS before 2.4.1 Patch #5, XSS in elFinder is possible in framework/modules/file/connector/elfinde
CVE-2017-7991 CRITICAL 9.8 UPGRADE Exponent CMS 2.4.1 and earlier has SQL injection via a base64 serialized API key (apikey parameter) in the api

References

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