What is CVE-2022-34531?

CVE-2022-34531 is a critical-severity vulnerability in Dedecms. CVSS score: 9.8/10. Published 2022-07-29.

How severe is CVE-2022-34531?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2022-34531 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Dedecms

CVE-2022-34531

DedeCMS v5.7.95 was discovered to contain a remote code execution (RCE) vulnerability via the component mytag_ main.php.

Published 2022-07-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.247 (97.8th percentile), scored 2026-10-04.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.235 · newest: 0.247 · change: +0.012

Affected products

Dedecms — versions 5.7.95

Public proof-of-concept exploits

References

github.com/Airrudder/vuls/blob/main/dedecms/DedeCMS-v5.7.95-RCE.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-34531?: CVE-2022-34531 is a critical-severity vulnerability in Dedecms. CVSS score: 9.8/10. Published 2022-07-29.
How severe is CVE-2022-34531?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-34531 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.