9.8

CVE-2021-27903: craftcms craft_cms Missing Authorization

CVSS: 9.8v3.1CriticalModified
Published 30-06-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-27903 is a critical (CVSS 9.8) Missing Authorization vulnerability in craftcms craft_cms. EPSS estimates a 2.82% chance of exploitation in the next 30 days, higher than 86.3% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
2.82%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 30-06-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in Craft CMS before 3.6.7. In some circumstances, a potential Remote Code Execution vulnerability existed on sites that did not restrict administrative changes (if an attacker were somehow able to hijack an administrator's session).

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

2.82%

Chance of exploitation in the next 30 days

Percentile

86%

Versus all other CVEs

30-day change

0.00 pp

From 2.82% on 19-09-2026

19-09-202619-10-2026
EPSS score
2.82%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Craftcms1 product

1 vendor · 1 product

References

3 links