CVE-2026-29839
CVE-2026-29839 is a high-severity vulnerability in Dedecms with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-352.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- EPSS exploit prediction: 0% (4th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-14903
- Weakness: CWE-352
- Affected product: Dedecms
- Published:
- Last modified:
Description
DedeCMS v5.7.118 was discovered to contain a Cross-Site Request Forgery (CSRF) vulnerability in /sys_task_add.php.
Frequently asked questions
- What is CVE-2026-29839?
- DedeCMS v5.7.118 was discovered to contain a Cross-Site Request Forgery (CSRF) vulnerability in /sys_task_add.php.
- How severe is CVE-2026-29839?
- CVE-2026-29839 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-29839 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-29839?
- CVE-2026-29839 affects Dedecms. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-29839?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-29839 have an EU (EUVD) identifier?
- Yes. CVE-2026-29839 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14903.
- When was CVE-2026-29839 published?
- CVE-2026-29839 was published on 2026-03-24 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:dedecms:dedecms:5.7.118:*:*:*:*:*:*:*
More vulnerabilities in Dedecms
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- CVE-2026-30694 — Critical (CVSS 9.8): An issue in DedeCMS v.5.7.118 and before allows a remote attacker to execute arbitrary code via the array_filter…
- CVE-2024-35510 — Critical (CVSS 9.8): An arbitrary file upload vulnerability in /dede/file_manage_control.php of DedeCMS v5.7.114 allows attackers to execute…
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- CVE-2024-29661 — Critical (CVSS 9.8): A File Upload vulnerability in DedeCMS v5.7 allows a local attacker to execute arbitrary code via a crafted payload.
- CVE-2024-29684 — Critical (CVSS 9.8): DedeCMS v5.7 was discovered to contain a Cross-Site Request Forgery (CSRF) via the component…
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