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Fencer Vulns
medium 5.4

CVE-2023-5167 json

User Activity Log Pro < 2.3.4 - Unauthenticated Stored Cross-Site Scripting via User Agent

published 2023-10-16 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-57504

cvss
5.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

The User Activity Log Pro WordPress plugin before 2.3.4 does not properly escape recorded User-Agents in the user activity logs dashboard, which may allow visitors to conduct Stored Cross-Site Scripting attacks.

Patch / fix

  • Unknown user-activity-log-pro 2.3.4

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • wpscan.com https://wpscan.com/vulnerability/78ea6fe0-5fac-4923-949c-023c85fe2437 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected products

  • Unknown user-activity-log-pro

Classification

Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.