How severe is CVE-2020-29553?

CVE-2020-29553 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-2020-29553 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-29553?

CVE-2020-29553 primarily affects Getgrav Grav Cms. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-29553?

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.

When was CVE-2020-29553 published?

CVE-2020-29553 was published on 2021-03-15 and last updated on 2026-06-17.

CVE-2020-29553

CVE-2020-29553 is a high-severity vulnerability in Getgrav Grav Cms 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)
CVSS v2: 5.1
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Getgrav Grav Cms
Published: 2021-03-15
Last modified: 2026-06-17

Description

The Scheduler in Grav CMS through 1.7.0-rc.17 allows an attacker to execute a system command by tricking an admin into visiting a malicious website (CSRF).

Frequently asked questions

What is CVE-2020-29553?: The Scheduler in Grav CMS through 1.7.0-rc.17 allows an attacker to execute a system command by tricking an admin into visiting a malicious website (CSRF).
How severe is CVE-2020-29553?: CVE-2020-29553 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-2020-29553 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-29553?: CVE-2020-29553 primarily affects Getgrav Grav Cms. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-29553?: 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.
When was CVE-2020-29553 published?: CVE-2020-29553 was published on 2021-03-15 and last updated on 2026-06-17.

References

https://blog.bssi.fr/cve-2020-29553-cve-2020-29555-cve-2020-29556-multiple-vulnerabilities-within-cms-grav/

Affected products (28)

cpe:2.3:a:getgrav:grav_cms:*:*:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:beta1:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:beta10:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:beta2:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:beta3:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:beta4:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:beta5:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:beta6:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:beta7:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:beta8:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:beta9:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:rc1:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:rc10:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:rc11:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:rc12:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:rc13:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:rc14:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:rc15:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:rc16:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:rc17:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:rc2:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:rc3:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:rc4:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:rc5:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:rc6:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:rc7:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:rc8:*:*:*:*:*:*
cpe:2.3:a:getgrav:grav_cms:1.7.0:rc9:*:*:*:*:*:*

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