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Fencer Intel
high 8.8

CVE-2021-24487 json

St Daily Tip <= 4.7 - CSRF to Stored Cross-Site Scripting

published 5y ago modified 4mo ago also EUVD-2021-11399

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits
0
none known

Summary

The St-Daily-Tip WordPress plugin through 4.7 does not have any CSRF check in place when saving its 'Default Text to Display if no tips' setting, and was also lacking sanitisation as well as escaping before outputting it the page. This could allow attacker to make logged in administrators set a malicious payload in it, leading to a Stored Cross-Site Scripting issue

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Exploit prediction

0.64% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • wpscan.com https://wpscan.com/vulnerability/def352f8-1bbe-4263-ad1a-1486140269f4 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • Unknown St-Daily-Tip

Classification

Weakness
  • CWE-352 Cross-Site Request Forgery
  • 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.