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Fencer Intel
medium 5.4

CVE-2021-24346 json

Stock in & out <= 1.0.4 - Reflected Cross-Site Scripting (XSS)

published 5y ago modified 4mo ago also EUVD-2021-11259

cvss
5.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

The Stock in & out WordPress plugin through 1.0.4 has a search functionality, the lowest accessible level to it being contributor. The srch POST parameter is not validated, sanitised or escaped before using it in the echo statement, leading to a reflected XSS issue

Is CVE-2021-24346 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • wpscan.com https://wpscan.com/vulnerability/c25146fd-4143-463c-8c85-05dd33e9a77b referenced PoC, tagged "exploit" by a source, unverified
  • codevigilant.com https://codevigilant.com/disclosure/2021/wp-plugin-stock-in/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N

Affected products

  • Unknown Stock in & out

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
Technology feeds

References

Sources

Fencer Intel 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.