CVE-2021-36879: stylemixthemes ulisting
CVSS: 9.8v3.1CriticalModified
Published 27-09-2021Last modified 28-04-2026
Vulnerability summary
CVE-2021-36879 is a critical (CVSS 9.8) vulnerability in stylemixthemes ulisting. EPSS estimates a 2.18% chance of exploitation in the next 30 days, higher than 82% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 2.0.6.
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)EPSS score
2.18%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Timeline
- 27-09-2021PublishedVulnerability first disclosed.
- 28-04-2026Last modifiedVulnerability information updated.
Description
Unauthenticated Privilege Escalation vulnerability in WordPress uListing plugin (versions <= 2.0.5). Possible if WordPress configuration allows user registration.
CVSS metrics
4 scores · 3 sources · 2 versionsCritical 9.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 3 agree
- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- wordfenceSource9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
2.18%
Chance of exploitation in the next 30 days
Percentile
82%
Versus all other CVEs
30-day change
0.00 pp
From 2.18% on 19-09-2026
19-09-202619-10-2026
EPSS score2.18%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (patchstack.com)
Maturity: unknown
Weaknesses
CWE · root cause- CWE-264Permissions, Privileges, and Access ControlsWeaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.
- CWE-269Improper Privilege ManagementThe product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
Affected systems
Stylemixthemes2 products
- ulisting≤ 2.0.5
- ulisting (wordpress plugin)≥ <= 2.0.5, ≤ 2.0.5
Wordpress1 product
- ulisting≤ 2.0.5 (fixed in 2.0.6)
2 vendors · 3 products