CVE-2026-1552: A security vulnerability has been detected in SEMCMS 5.0

Routine

MEDIUM 6.3DOWNGRADE

CVE-2026-1552 is a medium-severity flaw (CVSS 6.3) affecting semcms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A security vulnerability has been detected in SEMCMS 5.0. This vulnerability affects unknown code of the file /SEMCMS_Info.php. The manipulation of the argument searchml leads to sql injection. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Weakness	CWE-74, CWE-89
Published	2026-01-29
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: sem-cms

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

Am I affected?

Timeline

2026-01-29 01:16 UTCPublished CVE record published
2026-06-17 10:16 UTCUpdated Record last modified

sem-cms semcms DOWNGRADE

Affected: 5.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.0 (Debian / Ubuntu)

apt-cache madison semcms sudo apt install semcms=<VERSION_BEFORE_5.0> sudo apt-mark hold semcms

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

dnf --showduplicates list semcms sudo dnf downgrade semcms-<VERSION_BEFORE_5.0> sudo dnf versionlock add semcms

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-2026-1552?

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

Is CVE-2026-1552 being exploited?

CVE-2026-1552 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-2026-1552 affect?

CVE-2026-1552 affects semcms. Severity is medium (CVSS 6.3). A security vulnerability has been detected in SEMCMS 5.0. This vulnerability affects unknown code of the file /SEMCMS_Info.php. The manipulation of the argument searchml leads to sql injection. The attack is possible to be carried out remot

How urgent is CVE-2026-1552?

Priority 35/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2024-32409 HIGH 7.1 DOWNGRADE An issue in SEMCMS v.4.8 allows a remote attacker to execute arbitrary code via a crafted script.
CVE-2025-51660 MEDIUM 5.4 UPGRADE SemCms v5.0 was discovered to contain a SQL injection vulnerability via the lgid parameter at SEMCMS_Products.
CVE-2025-51659 MEDIUM 5.4 UPGRADE SemCms v5.0 was discovered to contain a SQL injection vulnerability via the ID parameter at SEMCMS_Products.ph
CVE-2025-51658 MEDIUM 5.4 UPGRADE SemCms v5.0 was discovered to contain a SQL injection vulnerability via the ID parameter at SEMCMS_InquiryView
CVE-2025-51657 MEDIUM 5.4 UPGRADE SemCms v5.0 was discovered to contain a SQL injection vulnerability via the lgid parameter at SEMCMS_Link.php.

References

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