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CVE-2021-25973

22
FAUCET Score

CVE-2021-25973 describes an Improper Access Control vulnerability in Publify versions 9.0.0.pre1 through 9.2.4, allowing "guest" users to self-register even when this functionality is disabled by the administrator. This medium-severity vulnerability (CVSS 6.5) has a low attack complexity and can lead to unauthorized account creation, impacting confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 9.0.0, <= 9.2.4CPE matchmatch criteria
cpe:2.3:a:publify_project:publify:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.80%
Probability of exploitation in next 30 days
EPSS Percentile
52.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0080 is in the 33rd percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
rubygemspatch availablevia ghsa
Product: publify_coreFixed in: 9.2.5

Vendor Advisories (1)

rubygemsGHSA-x24j-87x9-jvv5medium

Publify `guest` role users can self-register even when the admin does not allow it

Nov 3, 2021

References

github.com / publify/publify/commit/3447e0241e921b65f6eb1090453d8ea73e98387e
PatchThird Party Advisory
whitesourcesoftware.com / vulnerability-database/CVE-2021-25973
Third Party Advisory