CVE-2021-25973 json
Publify - Improper Authorization Leads to Guest Signup Restriction Bypass
published 2021-11-02 5 y ago modified 2026-06-17 4 mo ago also BIT-publify-2021-25973 , EUVD-2021-2410 , GHSA-x24j-87x9-jvv5
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 57%
- public exploits
- 0
- none known
Summary
In Publify, 9.0.0.pre1 to 9.2.4 are vulnerable to Improper Access Control. “guest” role users can self-register even when the admin does not allow. This happens due to front-end restriction only.
Patch / fix
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 18 mo ago
Exploit prediction
0.83% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
| NVD | 2.0 | 6.4 | AV:N/AC:L/Au:N/C:P/I:P/A:N |
| OSV | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| rubygems | publify_core | >=9.0.0.pre1, <9.2.5 |
9.2.5 |
| bitnami | publify | >=9.0.0, <9.2.4 |
9.2.4 |
Affected products
- publify_core publify_core
Classification
References
-
github.com
/publify/publify/commit/3447e0241e921b65f6eb1090453d8ea73e98387e
web, patch, third-party-advisory
-
whitesourcesoftware.com
/vulnerability-database/CVE-2021-25973
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-25973
advisory
-
github.com
/publify/publify
web
-
github.com
/rubysec/ruby-advisory-db/blob/master/gems/publify_core/CVE-2021-25973.yml
web
Sources
- CVE List CVE-2021-25973
- GitHub Advisory GHSA-x24j-87x9-jvv5
- NVD CVE-2021-25973
- OSV BIT-publify-2021-25973
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