CVE-2026-30643: An issue was discovered in DedeCMS 5.7.118 allowing attackers to execute code via crafted setup tag values in

Q: How do I fix CVE-2026-30643?

dedecms: upgrade to newer than 5.7.118. Exact commands for each OS are on this page.

Q: Is CVE-2026-30643 being exploited?

CVE-2026-30643 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-30643 affect?

CVE-2026-30643 affects dedecms. Severity is critical (CVSS 9.8). An issue was discovered in DedeCMS 5.7.118 allowing attackers to execute code via crafted setup tag values in a module upload.

Q: How urgent is CVE-2026-30643?

Priority 59/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2026-30643 is a critical-severity flaw (CVSS 9.8) affecting dedecms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in DedeCMS 5.7.118 allowing attackers to execute code via crafted setup tag values in a module upload.

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

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 53%)
CISA exploited list	No
Weakness	CWE-94
Published	2026-04-01
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: dedecms

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

Am I affected?

Timeline

2026-04-01 17:28 UTCPublished CVE record published
2026-06-17 10:32 UTCUpdated Record last modified

dedecms dedecms UPGRADE

Affected: <= 5.7.118

Fixed in: newer than 5.7.118

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 5.7.118 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade dedecms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade dedecms

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora 46 · python-googleapis-common-protos · FIXED · 1.75.5-1.fc46~bootstrap · FEDORA-2026-d911c4c4e6 · source

sudo dnf upgrade --advisory=FEDORA-2026-d911c4c4e6

Fedora ELN · see advisory · FIXED · FEDORA-2026-e3987c278f · source

sudo dnf upgrade --advisory=FEDORA-2026-e3987c278f

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: gist.github.com/0psPwn/10c43912adee9bfe2ff4fec947d4ee5a

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-2026-30643?

dedecms: upgrade to newer than 5.7.118. Exact commands for each OS are on this page.

Is CVE-2026-30643 being exploited?

CVE-2026-30643 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-2026-30643 affect?

CVE-2026-30643 affects dedecms. Severity is critical (CVSS 9.8). An issue was discovered in DedeCMS 5.7.118 allowing attackers to execute code via crafted setup tag values in a module upload.

How urgent is CVE-2026-30643?

Priority 59/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-30855 HIGH 8.8 DOWNGRADE DedeCMS v5.7 was discovered to contain a Cross-Site Request Forgery (CSRF) vulnerability via /src/dede/makehtm
CVE-2026-29839 HIGH 8.8 DOWNGRADE DedeCMS v5.7.118 was discovered to contain a Cross-Site Request Forgery (CSRF) vulnerability in /sys_task_add.

References

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