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CVE-2021-25973

Publify - Improper Authorization Leads to Guest Signup Restriction Bypass

6.5 MediumFix available

CVE-2021-25973 is a medium vulnerability (CVSS 6.5) in Publify Project Publify, published November 2, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.83%, the 57th percentile. Fixed in publify_core 9.2.5.

What does this mean?
Severity
6.5 MediumCVSS 3.1, CVE List
Exploit chance
0.83%EPSS, 57th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
9.2.5publify_core +2 more

Description

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
None

Exploit likelihood

0.83%Up 0.2 points since Nov 2, 2021
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
publify_core
RubyGems
9.0.0.pre1 up to 9.2.5
9.2.5
publify
Bitnami
9.0.0 up to 9.2.4
9.2.4
publify_core
RubyGems
9.0.0.pre1 up to 9.2.5, plus listed versions
9.0.09.0.0.pre29.0.0.pre39.0.0.pre49.0.0.pre5
Show 8 moreShow less
9.0.0.pre69.0.19.1.09.2.09.2.19.2.29.2.39.2.4
9.2.5

What each source reports

CVE List Score used6.5

Publify - Improper Authorization Leads to Guest Signup Restriction Bypass

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.

Record
CVE-2021-25973
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness
CWE-285
Updated
2026-11-02
EUVDEUVD-2021-24106.5

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.

Record
EUVD-2021-2410
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-x24j-87x9-jvv56.5

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

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 it. This happens due to front-end restriction only.

Record
GHSA-x24j-87x9-jvv5
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness
CWE-285, CWE-669, CWE-863
Updated
2026-11-02
NVD6.5

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.

Record
CVE-2021-25973
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS 2.0
6.4 MediumAV:N/AC:L/Au:N/C:P/I:P/A:N
Weakness
CWE-285, CWE-669
Updated
2026-11-02
OSV6.5

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.

Record
CVE-2021-25973
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Updated
2026-11-02
OSVGHSA-x24j-87x9-jvv56.5

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

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 it. This happens due to front-end restriction only.

Record
GHSA-x24j-87x9-jvv5
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness
CWE-285, CWE-669, CWE-863
Updated
2026-11-02
OSVBIT-publify-2021-25973No score

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.

Record
BIT-publify-2021-25973
Updated
2026-11-02

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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