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Fencer Vulns
high 8.3

CVE-2026-87901 json

Improper sanitization in the registration module allows reflected Cross-Site Scripting.

published 2026-10-23 16 d ago modified 2026-11-02 6 d ago also EUVD-2026-109101

cvss
8.3
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 25%
public exploits
0
none known

Summary

Improper sanitization in the registration module allows reflected Cross-Site Scripting.

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
7 d ago

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 8.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L

Affected products

  • phpBB phpBB

Classification

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

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.