How severe is CVE-2021-27312?

CVE-2021-27312 has a CVSS 3.x base score of 9.4, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2021-27312 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-27312?

CVE-2021-27312 affects Gleezcms Gleez Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-27312?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2021-27312 have an EU (EUVD) identifier?

Yes. CVE-2021-27312 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-1146.

When was CVE-2021-27312 published?

CVE-2021-27312 was published on 2024-04-03 and last updated on 2026-06-17.

CVE-2021-27312

CVE-2021-27312 is a critical-severity vulnerability in Gleezcms Gleez Cms with a CVSS 3.x base score of 9.4. 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-918.

Key facts

Severity: Critical (CVSS 3.x base score 9.4)
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-1146
Weakness: CWE-918
Affected product: Gleezcms Gleez Cms
Published: 2024-04-03
Last modified: 2026-06-17

Description

Server Side Request Forgery (SSRF) vulnerability in Gleez Cms 1.2.0, allows remote attackers to execute arbitrary code and obtain sensitive information via modules/gleez/classes/request.php.

Frequently asked questions

What is CVE-2021-27312?: Server Side Request Forgery (SSRF) vulnerability in Gleez Cms 1.2.0, allows remote attackers to execute arbitrary code and obtain sensitive information via modules/gleez/classes/request.php.
How severe is CVE-2021-27312?: CVE-2021-27312 has a CVSS 3.x base score of 9.4, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2021-27312 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-27312?: CVE-2021-27312 affects Gleezcms Gleez Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-27312?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2021-27312 have an EU (EUVD) identifier?: Yes. CVE-2021-27312 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-1146.
When was CVE-2021-27312 published?: CVE-2021-27312 was published on 2024-04-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gleezcms:gleez_cms:1.2.0:*:*:*:*:*:*:*

More vulnerabilities in Gleezcms Gleez Cms

CVE-2018-15845 — High (CVSS 8.8): There is a CSRF vulnerability that can add an administrator account in Gleez CMS 1.2.0 via admin/users/add.
CVE-2018-16347 — Medium (CVSS 6.1): An issue was discovered in Gleez CMS v1.2.0. There is XSS via media/imagecache/resize.
CVE-2018-7035 — Medium (CVSS 5.4): Cross-site scripting (XSS) vulnerability in Gleez CMS 1.2.0 and 2.0 might allow remote attackers (users) to inject…

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