How severe is CVE-2020-27533?

CVE-2020-27533 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-27533 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-27533?

CVE-2020-27533 affects Dedecms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-27533?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-27533 published?

CVE-2020-27533 was published on 2020-10-22 and last updated on 2026-06-17.

CVE-2020-27533

CVE-2020-27533 is a medium-severity vulnerability in Dedecms with a CVSS 3.x base score of 5.4. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 3% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Dedecms
Published: 2020-10-22
Last modified: 2026-06-17

Description

A Cross Site Scripting (XSS) issue was discovered in the search feature of DedeCMS v.5.8 that allows malicious users to inject code into web pages, and other users will be affected when viewing web pages.

Frequently asked questions

What is CVE-2020-27533?: A Cross Site Scripting (XSS) issue was discovered in the search feature of DedeCMS v.5.8 that allows malicious users to inject code into web pages, and other users will be affected when viewing web pages.
How severe is CVE-2020-27533?: CVE-2020-27533 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-27533 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-27533?: CVE-2020-27533 affects Dedecms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-27533?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-27533 published?: CVE-2020-27533 was published on 2020-10-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:dedecms:dedecms:5.8:*:*:*:*:*:*:*

More vulnerabilities in Dedecms

CVE-2026-30643 — 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…
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…
CVE-2024-35375 — Critical (CVSS 9.8): There is an arbitrary file upload vulnerability on the media add .php page in the backend of the website in version…
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…

All CVEs affecting Dedecms →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →