Published:2021/06/23 Last Updated:2021/06/23
JVN#63066062
WordPress Plugin "WordPress Popular Posts" vulnerable to cross-site scripting
Overview
WordPress Plugin "WordPress Popular Posts" contains a cross-site scripting vulnerability.
Products Affected
- WordPress Popular Posts 5.3.2 and earlier
Description
WordPress Plugin "WordPress Popular Posts" provided by Hector Cabrera contains a cross-site scripting vulnerability (CWE-79).
Impact
A user with the administrative privilege may unintentionally execute a script on his/her web browser.
Solution
Update the plugin
Update the plugin according to the information provided by the developer.
Vendor Status
| Vendor | Link |
| Hector Cabrera | WordPress Popular Posts |
| Minor Updates & Hotfixes 5.3.3 | |
| Hector Cabrera - Full-stack developer |
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
CVSS v3
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Base Score:
5.4
| Attack Vector(AV) | Physical (P) | Local (L) | Adjacent (A) | Network (N) |
|---|---|---|---|---|
| Attack Complexity(AC) | High (H) | Low (L) | ||
| Privileges Required(PR) | High (H) | Low (L) | None (N) | |
| User Interaction(UI) | Required (R) | None (N) | ||
| Scope(S) | Unchanged (U) | Changed (C) | ||
| Confidentiality Impact(C) | None (N) | Low (L) | High (H) | |
| Integrity Impact(I) | None (N) | Low (L) | High (H) | |
| Availability Impact(A) | None (N) | Low (L) | High (H) |
CVSS v2
AV:N/AC:M/Au:S/C:N/I:P/A:N
Base Score:
3.5
| Access Vector(AV) | Local (L) | Adjacent Network (A) | Network (N) |
|---|---|---|---|
| Access Complexity(AC) | High (H) | Medium (M) | Low (L) |
| Authentication(Au) | Multiple (M) | Single (S) | None (N) |
| Confidentiality Impact(C) | None (N) | Partial (P) | Complete (C) |
| Integrity Impact(I) | None (N) | Partial (P) | Complete (C) |
| Availability Impact(A) | None (N) | Partial (P) | Complete (C) |
Credit
Yu Iwama of Secure Sky Technology Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
Other Information
| JPCERT Alert |
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| JPCERT Reports |
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| CERT Advisory |
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| CPNI Advisory |
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| TRnotes |
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| CVE |
CVE-2021-20746 |
| JVN iPedia |
JVNDB-2021-000056 |