CVE-2023-26689: An issue discovered in CS-Cart MultiVendor 4.16.1 allows attackers to alter arbitrary user account profiles vi

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2023-26689 is a critical-severity flaw (CVSS 9.8) affecting cs-cart multivendor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue discovered in CS-Cart MultiVendor 4.16.1 allows attackers to alter arbitrary user account profiles via crafted post request.

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	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-286
Published	2024-09-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: cs-cart

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

Am I affected?

Timeline

2024-09-25 01:15 UTCPublished CVE record published
2026-06-17 05:43 UTCUpdated Record last modified

cs-cart cs-cart multivendor DOWNGRADE

Affected: 4.16.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.16.1

1. Check installed version

apt-cache policy cs-cart-multivendor || rpm -q cs-cart-multivendor || cs-cart-multivendor --version

2. No fixed release: DOWNGRADE to a release before 4.16.1 (Debian / Ubuntu)

apt-cache madison cs-cart-multivendor sudo apt install cs-cart-multivendor=<VERSION_BEFORE_4.16.1> sudo apt-mark hold cs-cart-multivendor

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

dnf --showduplicates list cs-cart-multivendor sudo dnf downgrade cs-cart-multivendor-<VERSION_BEFORE_4.16.1> sudo dnf versionlock add cs-cart-multivendor

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-2023-26689?

cs-cart multivendor: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-26689 being exploited?

CVE-2023-26689 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-2023-26689 affect?

CVE-2023-26689 affects cs-cart multivendor. Severity is critical (CVSS 9.8). An issue discovered in CS-Cart MultiVendor 4.16.1 allows attackers to alter arbitrary user account profiles via crafted post request.

How urgent is CVE-2023-26689?

Priority 57/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-26691 HIGH 7.2 DOWNGRADE Directory Traversal vulnerability in CS-Cart MultiVendor 4.16.1 allows remote attackers to run arbitrary code
CVE-2023-26690 HIGH 8.8 DOWNGRADE File Upload vulnerability in CS-Cart MultiVendor 4.16.1 allows remote attackers to run arbitrary code via File
CVE-2023-26688 MEDIUM 5.4 DOWNGRADE Cross Site Scripting (XSS) vulnerability in CS-Cart MultiVendor 4.16.1 allows remote attackers to run arbitrar
CVE-2023-26687 HIGH 8.8 DOWNGRADE Directory Traversal vulnerability in CS-Cart MultiVendor 4.16.1 allows remote attackers to obtain sensitive in
CVE-2023-26686 CRITICAL 9.8 DOWNGRADE File Upload vulnerability in CS-Cart MultiVendor 4.16.1 allows remote attackers to run arbitrary code via the

References

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